Work Sheet for Comp Exam 2010I

8/12/2019 Work Sheet for Comp Exam 2010I

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CCS#7

I.Fill in the blanks

1. The signals which operate throughout the duration of a call is known as

_____________ signals.( Line Signals)

2. If the speech channel and the corresponding signaling channel are rigidly inassociation with each other,the signaling syste is ______(!"S)

#. If the signaling link and the speech circuit group run along different routes, thatode of !!S is known as ____________($uasi associated)

%. In a !!S&' network, the actual signaling inforation pertaining to a call is sentthrough ______________________________signal unit.(S)

*. The +it pattern for flag in !!S&' is _________(111111)

-. The two types of Inter echange digital signaling are _____________ /_____________(!!S&' ,!"S)

'. The +ottoost three layers of !!S 0o' node is known as (T)

3. In !!S' signalling, the source and destination of signalling traffic are called .(Signaling oint)

4. The length indicator(LI) for 5IS is _____________ ()

1. The length indicator(LI) for LSS is _____________ (1or 2)

11. The length indicator(LI) for 5IS is _____________ (# to -#)

!hoose the correct "nswer

1. The signals echanged +etween two different nodes ainly for sending theaddress inforation during the phase of setting up are

(a. 6egister signals +. TS signals c. Line signals d. "ll the a+o7e)

2. The signal unit which carries inforation for the operation of signaling links is(a. S +. LSS c. 5IS)

#. The specific field in the !!S&' packet which is used to differentiate+etween the three signal units is

(a. SI5 +. LI c. !8)

%. The Signal unit which contains the address of the destination echange to whichthe !' essage is to +e transferred (routing la+el) is

1


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(a. S +. LSS c. 5IS d. T)State True/False

1. !S5 is a digital signaling syste(5)

2. $uasiassociated ode of signaling is prefera+le in routes with hea7y traffic

conditions.(5)

#. !!S&' is ha7ing a fied length frae forat.(T)

Expand the following:

1. T essage Transfer part

2. ST0 u+lic switched telephone network

#. !S5 9 !opelled se:uence ulti fre:uency

%. 5IS5ill in signal units

*. ;! ;estination point code

-. ST 9 Signal transfer point

'. S 9 essage signal unit

3. LSS 9 Link status signal unit

I!

1.The ser7ice logic in I0 is concentrated in a central node called ( S!)

2.The ost popular ser7ice in I0 is (IT!)

#.The ass calling I0 platfor is located at (


3/103

4. @hat are the three different categories of charging for I0 ser7ices

1. 0o charging 2. unit charging #. higher rate charging

I! Sr"ie ke$

13 5< (5ree phone ser7ice)131 A0 (Airtual pri7ate network)132 9 IT!B A!!13# 9 Tele7oting no charge13% 9 ("!!)"ccount card calling13* 9 5L direct13- 9 5L reote13' ("0)ni7ersal "ccess nu+er(gt)133 9 (0)ni7ersal ersonnel nu+er (gt)13- 9 ("0)ni7ersal "ccess nu+er(local / distant)%&'(9 ("0)ni7ersal "ccess nu+er(6e7enue sharing)

%&'7 ) *+, -*reiu rate all%&'% Tele7oting unit charge rate%&'0 Tele7oting 2unit charge rate%&'1 Tele7oting different charge rates

I! SC* C23E- 45C4TE5

>angalore %2*!alcutta #%* (Link "ccess rotocol>)

*. >6I ;channel ser7ice operates at ____________8+ps(1- k+ps )

-. IS;0 >6" offers ____________(two > channels and one ; channel (2>C;))

'. >6I >channel ser7ice operates at _________ k+ps (-%)

3.IS;0 6" offers ____(# > channels and 1 ; channel )a total +it rate of 2.%3+ps

#


4/103

1. >6" ;channel ser7ice operates at ____________8+ps(-%)

11. Interface +etween non IS;0 terinal and T" ( 6)

12. Interface +etween IS;0 terinal and 0T2 (S)

1#. Interface +etween 0T1 and 0T2(T)

1%. non IS;0 terinal is connected to IS;0 7ia _____________ (T")

1*. TBS is a physical interface of ___________ wires (%)

1-. is a physical interface of ___________ wires (2)

E%6

I. 5ill in the +lanks.

1. Su+scri+ers are connected to ___________________ rack(6" or !SD)

2. 2> digital streas are connected to ________________rack(6)

#. ?ne EDF1- card can accoodate __________ nu+er of su+scri+ers(1-)

%. 5re:uency 6ecei7ers are e:uipped in _____________________rack (DT")

*. aiu nu+er of 6 racks in D1> Dchange is _____________(-)

-. There are ________nu+er of call processing registers a7aila+le in one 6 (2*-)

'. Su+scri+ersB Trunk B"nalysis ;ata are stored in ________________unit(T6)

3. Load and traffic o+ser7ations are perfored +y ________________unit(TE)

4. "ll the units in D1> are connected to the unit ?! +y __________link(L!)

1. ;uring the failure of data link the detailed +illing data is stored in _____(;S5)

11. L links connect all !onnection units to ___________________rack($)

12. 6ecorded announceent achine is e:uipped in _______________rack(>;")

1#. In the Tie >ase -.1%%


5/103

Choose the orret answer

1. aiu nu+er of L6 connecti7ity in the Switch is ____________ ( 142, #3%, *12, 12%)

2. Traffic handling capacity of D1> is____________________Drlangs

( 12%, 2%3, %, *12 ) #. Switching principle used in D1> is ____________ ( "nalogue switch, TST switch , single T switch, single Space switch) %. ?ne H6 contains ____________________6s

(12, 1-, 13, 2%) *. In an D1> Dge. the aiu nu+er of 6 is _____________ (142, #3%, 12%, 223)

-. !SD; is connected to 6 +y eans of aiu _______!s ( 2, %, 3, 1-) '. 6 nu+er of >;" is _____________ (#2, 1-, 3, 1 )

3. $ racks are installed in _____________ suit ( 8, L, , ! ) 4. H!E is associated with ___________________ rack ( ?!, T6, 6, $) 1. !apacity of one odule in the "T6 of T6 rack is ______8 @ords ( -%, 123, 2*-, *12)

11. Su+scri+ers eter accounts are stored in _______________ file in TE ( 5I;") 1*. The hard disk in the ?! is __________________ ( ;3, DT, "D, L**)

III. 4nswer the following

1. 0ae the functional +locks of !SD(Su+scri+er terinal IB5 ,!oncentrationnetwork , !ontrol network)

2. @hat is the significance of 6%3(;ata link is connected fro !)

#. @rite down the functions of >;"( "nnounceents and "lar transissionodule)

%. @hat is DLS%3 (!ontrol logic 9 %3 +it dataprocessor logic)

*. @hat is the aiu nu+er of T6 files (*2#)

*


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-. List the +asic signal generated +y >T

'. List the peripherals of ?! (TT=,I6,"D ,!A,

1. >T a. agnetic Tape%

2. 6 +. Tone generator #

#. DT" c. 2> !2

%. ;S5 d. Su+Js eter account*

*. TE e. -.1%% hG.1

2C0&1

I.The Switching atri of ?!>23# is a ____________switch.(T)

2. In ?!>23# ,eternal !s are terinated in unit.(ST)

#. The !!S' protocol handler is/ !!S' protocol controller

is in ?!> Syste(D , !)

%. %.____________ ultiple carries out interchange of inforation +etween S

and S!.(IS)

*. *._____________________ is the alar ultiple.("L)

-. -. Su+scri+er in ?!> is getting dial tone fro ____________ station(S")

'. '. ____________ unit is pro7iding synchronisation pulses in ?!>(STS)3. 3. The su+scri+er connection unit in ?!> is ____________(!S0)

4. 4. In one ST2H ____________nos. of L6s can +e terinated(123)

1. The central control of ?!> syste is ____________(S!)

11 .____________ ultiple carries out interchange of inforation +etween

5unctional units of S!.(IS)

-


7/103

Fill in the lanks:

1. The Switching atri of ?!>23# is a ______________ switch.(T)

2. ?!>23# Switching 0etwork can carry a aiu traffic of ______________

Drlangs.(2*)

#. Type of redundancy eployed in S! is ______________________.(0C1)

%. 6edundancy of ! is ________________.("cti7e stand+y)

*. The operating syste loaded in ?!>23# is _________________.(6T?S 9oard can connect aiu ________________ nu+er ofterinals.(3)

1#. Switching network of an ?!>23# echange is capa+le of terinating aaiu of ________________ L6s.(2%3)

1%. 6!T +oard consists of ______________ nu+er of -%E-% atrices.(%)

1*. SE works in ____________________ ode.("cti7e 9"cti7e)

1-. The aiu nu+er of ! terinations in ST2H is__________________(123)

1'. The tie +ase generation +oard in STS is ______________.(6!


8/103

14. The clock fro S;< ring for eternal synchroniGation of the Switch is terinatedin _________________ coupler in STS.(6!


9/103

#-. The S!sJ counicate each other o7er which 6ing(IS)

#'. The type of redundancy eployed in Token ring operation

#3. @hich station acts as the riary 6ing anager

#4. @hich is the only station in ?!> that terinates IS and "S token rings(S!)

%. Secondary storage de7ices are a7aila+le in which station(S)

II.3raw a neat sheati of 9ardware onfiguration of 2C0&1 S$ste showing

all the interonnetion links between units.

II. Sa$ T+;E or F45SE

1. ;igital su+scri+ers can +e connected to the !S0 of ?!> (T)

2. In large configurations, nu+er of IS rings can go up to %.(5 ,?nly one)

#. SE follows a TST architecture.(5,T)

%. Tie distri+ution in ?!> is triplicate(T)

*. The syste terinals are connected to S!. 5 (S)

C32T1. !;?T > syste eploys switching

configuration.(TST)

2. !;?T S> syste eploys switching

configuration.(T)

#. is the +asic growth odule in !;?T ;SS.(>)

%. !lock and synchroniGation is pro7ided on a centraliGed +asis +y

.(!)

*. pro7ides control essage counication within a

+ase odule.(>S)

-. !;?T "EEL pro7ides connecti7ity to >s.(#2)

'. aiu !s can +e pro7ided +etween 6S and ain

echange.(1-)

4


10/103

3. ?ne ultifrae has fraes.(#2)

4. ?nly nu+ered >s can +e configured as 6S.(e7en)

1. In ;T, one set of and pro7ide one D1

interface.;T! and ;TS)

11. Ideally traffic handling capacity of "EEL is Drlangs.

(3)

12. The concentration ratio +etween T and tie switch is (1K%)

1#. I? to I? link speed is .

1%. The cards used to generate clock in !L and !EL are

and respecti7ely.(5!8,!!8)

1*. 6DS>! stands for .(6espiration utility for +ase cartridge)

1-. The coand for creating the new echange code is

(?;E!?;)

1-. processes are created at the tie of syste initialiGation

and reain ali7e throughout the life of the syste.(DTD60"L)

1'. " line odule can terinate analog su+scri+ers.('-3)

13. " space switch card in ! takes care of switching of nu+er

of >s and handles switching of tieslots.(%, 2%3)

14. The !S that interface with " are and .(1, 2)

2. To get a free su+scri+er directory nu+er

coand is used.(;SL 9 ;I60)

State true or false. If false orret the underlined word.

a. ro7ision of special circuits like announceent is done in ".

+. "TB;T can +e used in concentration with IST.

c. 0etwork synchroniGation is done +y ".

d. @ith one IST a aiu of 123 +earer channels can +epro7ided.

e. > is ipleented as a duplicated controller.

1


11/103

f.

. SS cards are used for space switching.

k. S!I! and TI! are of the sae hardware.

l. and >S.

. >D has a capacity of 3 >.

n. S II is used inTS frae.

o. It should +e ensured that operator is added in +oth the I?s at thesae tie.

p. The aiu 7alue of S@;T"T


12/103

2) !! card pro7ides hoe etering fre:uency of for nu+er of su+scri+ers.

#) aintenance anel () interacts with card in the 2*- 6"E .

%) The line test card used in 2*- 6"E is .

*) "; / I? are connected to in > switch.

-) Inter> calls are switched +y in > syste.

') >! has got s can +e configured as 6S.

12


13/103

11) The aiu nu+er of 6;Ts that can +e put in a 2*-p 6"E is liited to 3

12) In 2*-p 6"E the 5B;T5 tones are generated +y 65 card

E


14/103

2. 6"6"E adinistrati7e processor#. ";"lar display panel%. 6S6eote Switch nit*. 6"T6"E "nnounceent / Tones-. ;T ;igital Trunk nit

III

I. 5ill in the +lanksK1. To get a free su+scri+er directory nu+er coand is used.2. "ny su+scri+er data odification is possi+le only when the status of the su+scri+er is .#. The paraeter 7alues of LI0T= as T / T are used for su+scri+ers.%. aiu nu+er of S


15/103

21. There are nu+er of calling and called su+scri+er categories in !;?T.

22. The aiu nu+er of entries possi+le in a coand file is .

2#. The priority assigned for !!> is .

II State True or False.

1. It is not possi+le to change the TD0 keeping the sae directory nu+er.

2.

ST

6HD0

"6!

4nswer the followingK1. ention any # ad7antages of S0 facilities for IS;0 su+scri+ers.

1*


16/103

2. !alculate the internal threshold and 0o.' threshold for the following paraeters.

a) >! card with % Ss ha7ing !!S' trunk

circuits.

1. @rite the coands in order for !!S' data creation.%. @rite the 0o.' ten forat

*. @hat are the two types of super7isions with respect to traffic easureent

-.@rite any % operations +y which a coercial +illing record is generated

'. ;ifferentiate the coands ?;?6@; and SDT@;.

3. " !;?T S> is connected to T"E through ;igital trunks. ;T8 1 pro7ided in T21 is used. @rite down the TD0s of the first fifteen circuits used as ?BH.

4. Dplain +riefly with eaplea) Special route

+) ;I; route

1. "n ?BH trunk group is to created fro !;?T to ?!> echange with route codeas *12. Taking the charge rate nu+er as 13,tgpcat as 1 and tgp nu+er as 21,what 7alues will you gi7e for the following paraeters in crerout coand.

6oute codeK6oute flag K!harge rate nu+erK;igit lengthKTrunk group choiceK

11. In the a+o7e :uestion, if the trunk group is created as !"S , using the #rddigitaltrunk circuit in the ;T frae a7aila+le in >1 in 1st frae, what 7alues you willgi7e for the following paraeters.

THST"KLI0SIH K6DHSIHKTHT=K

TH!"TK608;HTK;HTSO5;KTD0K

12. Dplain the architecture of A frae in !;?T.

1#. List out any four different types of traffic reports that can +e taken in

!;?T echange.

1-


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1%. >riefly eplain the architecture of "0 6"E.

1*. The local calls +etween ain echange and 6S are to +e restricted as the 6S islocated

in an area of different code. function)

2. the local ;Ls are connected to the ________________ +y____________

(LTH(>) +y % +ps carriers.)

#. The reote ;Ls are connected to the ______________ +y __________(LTH(>) , 2

+ps carriers.)

%.____________ is used for signaling +etween a ;L and the Hroup rocessor (H) in

the two LTHs.( !!S&')

*.________________ser7e to connect analog su+scri+ers to the syste. (su+scri+er line

odules, analog (SL")

-.;igital su+scri+ers are connected 7ia___________( su+scri+er line odules, digital

(SL;))

'. . ___________ is used in each ;L of a reote control unit (S"S!D)

3. The reote control unit, (6! ) consist of up to ___________ ;Ls.(-)

4. ;L no. K 1 to 2** (in steps of 1)

1. LTH no. K tsg-ltg

where tsg Q to ' (Tie Stage Hroup on which the

associated LTH is terinated)

ltg Q 1 to -#

11. ;L creation !6 ;L K ;LQ dlu no.,

ShelfQ",;L! Q tsgltgdiu Rdiu 1

;L!1 Q tsgltgdiu2 Rdiu #

12.The transfer rate on the secondary digital carrier (S;!) fro the LTH to the S0 and

7ice 7ersa is ______________+ps. ( 3)

1#.Dach of the S;!s has 123 tie slots of -% k+itBs each, out of which _________

1'


18/103

tieslots are used for user inforation and _____ tie slot for essages. ( 12' , 1 )

1%.The !, sends __________to the H. (coands)

1*. The H sends___________sto the !. (essage)

1-. " H echanges with other Hs,( reports)

1'. @ith the coon channel signaling network control (!!0!), the H uses

___________________ (orders. )

13. " can +e installed to connect an "ccess 0etwork "0 7ia A*.2 interface(


19/103

*. The ;L! / ! counicate on tie slot TS %' of *3C for essage

echanging where as H sends inforation to ! on tieslot TS6 of S3C.

-. The etering inforation during speech phase is stored in >*

'. In aiu configuration 6Bnu+er of LTHs can +e connected to S0.

3. ' !"Js are pro7ided in the +asic configuration of !.

4. The functions of !!S' le7el 2 are ipleented in the SI5T>of !!0!.

1. > / >1 works on 5oad Sharing+asis.

LD0

;L 0? 9 S #) !!;

1. ,ention the funtional unit of S!

TSK LIL, TS, LIS, LISSK LIS, SS 1*B3, SS 1-B1-, LIS!

B. Explain Cross 2ffie -C2C ondition.

. Explain +,:CTC funtion:

III. ;raw the +lock diagra of D@S; echange. ention the naes of each functionalunits and ark the links. 1. The ain coponents of ;L Syste are NNNNN / NN

(;I; and ;L!)

2. The SL" / SL; !ards are connected to

(The control +us andThe %4- k+ps +us )

#. ;L! / ;L!1 work on +asis.( load sharing )

14


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*. The !!S essages sent on ;! are duplicated o7er ( ;!2)

-. @hen ;!2 fails, the signaling for ;!# will +e carried in

( ;!)

'. List out the additional odules re:uired for 6;L.(S"S!D,"LDE)

3. @hat is the DS odule used for (5re:uency recei7er)

4. (TrueB 5alse) In an 6;L, under noral operation the intra;L calls ( !alls within

the ;L) will +e handled +y S"S! (Standalone ser7ice controller).(5)

1.


21/103

-. 5or fast transfer of control essages the o7erlay network called D5*Sis

used.

'. The ost iportant software su+syste in * DSS consists of +elational A

3$nai.

1. The capacity of the :

4

1 TS a 4*

2 ;LI b D>*

# S, 0666% TL@S d Spae swith

* < e Tie swith

- #>21; f S, lassis

g 9, dri"e

h ,4I5 2?6S


23/103

1) @hich of the following is an electronic echangea) "ED +) ! ;?T c) D@S; d) "ll the a+o7e

2) @hich of the following facility ena+le a su+scri+er to setup connection to ore thanone su+scri+er.

a) !all waiting +) usy hour c) lanks

1. !ellular systes eploy NNNNNNN.. to copensate for theliited fre:uency spectru.

2. !ells using the sae fre:uencies are called NNNNN.

#. " group of cells in which the sae fre:uencies are not reused is calledN..

%. NNNNNNN works as an incoing transit echange for HS L0.

*. NNNNNNN. is a part of S!BAL6 area where the o+ile can o7efreely without location updation.

-. NNNNNNN. Is the access ethod used in HS 0Bw .

'. NNNNNNNN. is the IT 7ision for the third generation o+ilesystes.

3. The switching functions of the HS network are carriedout +y NNNNNN.

4. The theoretical aiu speed supported +y H6S network is N..

2#


24/103

1. NNNNNN acts as the S! of the H6S network.

11. In NNNN. !lass of H6S o+ile , the HS /H6S can +esiultaneously acti7ated.

12. NNNNN.. is ipleented to support data on "+is interface in theH6S 0etwork.

1#. In D;HD network NNNNNNNNNN.. type of odulation is used.

1%. #H Syste is capa+le of pro7iding data rate upto NNNN.

1*. The core +and of IT 2 is NNNNNNNII.atch the 5ollowingK

1 IT2 a. 6eference data+ase for su+ paraetersU V 2. >urst eriod +. 6ate "dapatation fro 1#k+Bs to -% k+BsU V

#. ISI c. packet data technology U V%. T6" d. future standard for #H ser7ices. U V*. H6S e. *'' icrosec U V

-.


25/103

A. "nswer the followingK

1. ;efine a cell @hat do you ean +y sectorisation of cells2.ention any # ad7antages of third generation systes#. ention the following with respect to HSK

a. ;uration of +urst periodKNNNN.

+. 0oK of 65 !arriers inHS 4KNNN.

c. 5re:uency >ands for uplink / downlinkKNN.

d. T;" 5rae durationKNNNNN

e odulation ethodK

f. 0oK of tieslots per 65 !arrierKNNNN

%.ention any four functions of !S6

*. List the different stages in the network attachent process of a o+ileStation

- .;raw the scheatic of igration of HS network in >S0L towards #H

'.;efine H6S @hat are the network eleents of H6S

"nswer keys

I. 5ill in the >lanks

1. 5re:uency 6euse2. !ochannel !ells#. !luster %. HS!*. Location "rea-. 5;"BT;"'. IT23. S!4. 1'1.28>BS1. SHS011. !lass "12. !1#. 3S81%. #3%8+Bs (slow o7ing) or 2+Bs (stationary)1*. 133*22*


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II. atch The 5ollowingK1-. d1'. e13. f 14. +

2. c21. a III. Dpand the 5ollowing

a.H6S Heneral acket 6adio Ser7ice

+. HS! Hateway o+ile Switching !entre

c. @!;" @ide+and !ode ;i7ision ultiple "ccess

d. SS Short essage Ser7ice

e.6"!< 6ando "ccess !hannel

f. ;T!< acket ;ata Traffic !hannel

g.S60 o+ile Su+scri+er 6oaing 0u+er

h.ISI International o+ile Su+scri+er Identity

i. SI Su+scri+er Identity odule

D;HD Dnhanced ;ata for HS D7olution

AI. "nswer the followingK1. " cell is the +asic geographical unit of a cellular syste. " cell

represents the co7erage area of >TS. !ells are represented inthe shape of heagons.

Sectorisation of cellsK !ells are further di7ided into saller units calledsectors. Dach sector +eha7es as an independent cell. ;irectionalantennas are ade use of in sectored cells

2. a.ore >andwidth ,security and relia+ilityB5ied / Aaria+le data

rates.B>ackward copati+ility of de7ices with eisting networks

+.0ew radio spectru to relie7e o7ercrowding in eisting systes.B

c.6ich ultiedia ser7icesB"syetric ;ata rates

2-


27/103

#+. ;uration of +urst periodK *'' icroseconds

+. 0oK of 65 !arriers inHS 4K 12%

g. 5re:uency >ands for uplink / downlinkK 3441*


28/103

1.The aiu data rate of ___________ could +e achie7ed with H6S networka) 11*k+ps +) 1'1.2k+ps c) #3%k+ps d) 2+ps

2.The H6S user related data to perfor routing is stored in _____________.a) SHS0 +) HHS0 c) TS +)SHS0 c)S! d)>S!

-.The _____________ interface is introduced to pro7ide packet data transport +etween>SS and H6S +ack+one.a) H+ +)"+is c)Hn d)Hi

'.!all related !;6s are produced at soe inter7al during the call, if ___________feature is used.a)!all hold +)!LI c) L;! d)?SS1.@hat are the # +asic categories of !;6 supported +y S!2.;raw the network architecture of H6S

8eyK1.+, 2.c, #.+, %.a, *.d, -.a, '.c

1. @rite # features of #H o+ile counication.2. D;HD uses ___________ odulation.#. IT 7ision of #H standard is called ________________."nswersK1WIT2 is the ITJs 7ision for #H o+ile syste.WDfficient use of the radio spectru.WSingle nified Standard.W"nywhere "nytie !ounicationWackward copati+ility with second generation(2H) systes.2. 3S8IT 2.

III

23


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1. HS +elongs to ______________________ generation of o+ile systes.

2. The logical channel which acts as +eacon is ____________________

#. The interface +etween >S! and >TS is called _______________________

%. In HS, each 65 carrier carries _____________________ tieslots.

*. "n eaple of +earer ser7ice in HS is ____________________________

-. The odulation schee used in D;HD is ___________________________

'. The data+ase that stores IDI nu+ers of all registered o+ile su+scri+ers is called

__________________________

3. In @!;" _______________________________________ feature is used to

a7oid syste o7erload

4. The peranent identity of the user stored in the SI and asic Le7el !S6.

'. @hen S o7es fro one location area to another a periodic location procedure is

in7oked +y the syste.

3. 65 >and allocated for HS downlink is 34


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1. T;" 5rae a. packet data technology

2. Location "rea +. *'' icro sec

#. T6" c. 6eference data+ase

%. >urst eriod d. %.-1* illi sec

*. !!TS is

1

2

#

%*

-

'

3

#


31/103

(a) " (+) " +is (c) (d) >

*. The identity which guarantees the integrity of a o+ile on radio interface is(a) LSI (+) TSI (c) ISI (d) S60

-. The access techni:ue used in HS is(a) T;" (+) 5;" (c) !;" (d) 5;"BT;"

'. S60 is allocated +y(a) S!BAL6 (+)


32/103

2. Speech encoding X decoding is perfored inNNNNNNNN.( SB>TSB>S!)

#. TS will support the data rate uptoNNNN.+ps ( 2B3B1-)

%. odulation Techni:ue in HS is NNNNNNNNNNN

( >S8BHS8B$S8)

*. SS

2. HS8 +) 6DLT

#. TS c) ethod of odulation

%. Speech coder d) #H

*. ?!6 e) is used in down link direction

Tik the orret 4nswer

1. ;own link fre:uency in HS is

a) 4#*4-


33/103

c) S to >TS

d) S! to SS consists of

a) S / >TS

+) >TS / >S!

c) >S! / S!

d) 0one of the a+o7e

*. Location inforation of a su+scri+er is a7aila+le in

a) AL6

+)


34/103

c) 11%

d) 3

3. The duration of a +urst is

a) %.1-* s

+) .*'' s

c) #.4 ns

d) 12* s

4. aiu data rate achie7ed in H6S is

a) 1%% k+ps

+) 1'1.2 k+ps

c) #3% k+ps

d) 2 +ps

1. The aiu allowed output power of HS porta+le terinal

a) .2 @att

+) 2 @att

c) 3 @att

d) 2 @att

4!S=E+.

=rite full for of following.

1. T6" Transcoder 6ate "dapter nit

2. TSI Teporary o+ile Su+scri+er Identity

#. SIS;0 o+ile Station International su+scri+er directory 0u+er

%. DI6 D:uipent Identity 6egister

*. S60 o+ile Su+scri+er 6oaing 0u+er

-. TS ni7ersal o+ile Telecounication Syste

#%


35/103

'. SHS0 Ser7ice B ser7ing H6S Support 0ode

3. !;6 !all ;etailed 6ecord

4. D;HD Dnhanced ;ata rate for HS D7olution

1. S;!!lank.1. 1'11'3*

2. S

#. 2

%. HS8

*. eranent

-. 2nd

'. acket

3. '*

4. S!

1. 5;"CT;"

atch the following1 e

2 c

# d

% +

* a

Tick the following

1. a

2. c

#. c

%. +

#*


36/103


37/103

DC. =rite True or False - %6 ,arks

11. Trans power in HS>TS is 2 @12. Interface +etween >S! / ?! is E.2*

1#. S! is controlled +y the sae >S!1%. >S! is a ain switching center of HS1*. "dacent cells use the sae fre:uency in HS1-. aiu cell 6adius is 2* 8s in HS1'. The "! is used for security purposes13. @ireless +illing inforation is a7aila+le in !;614. p link is fro >TS to S2. Spacing +etween two adacent 65 is .2


38/103

3. 8i h. ;B6 4. HS 13 i. ' cells1. ;uration of Tieslot . 2 +ps

Tik the orret 4nswer

1. HS uses the following Techni:uea. !;"+. 5;"c. T;"d. 5;" / T;"

2. ;own link fre:uency in HS isa. 4#*4- S!c. >S! / S!d. 0one of the a+o7e

'. Location inforation of a su+scri+er is a7aila+le ina. AL6 +.


39/103

4. Dcho cancel e:uipent is used +etweena. S!S!+. S!ST0c. S!>S!d. 0one of the a+o7e

1. The typical cluster containsa. 1# cells+. ' cellsc. 3 cellsd. 4 cells

11. In one +urst of HS the nu+er of inforation +its area. *'+. 2c. 11%d. 3

12. The duration of a +urst is

a. %.1-* s+. .*'' sc. #.4 usd. 12* s

1#. 5re:uency hopping in HS systea. Increases the effect of co channel interface+. 6educes the effect of co channel interfacec. 0eutraliGe the effect of co channel interfaced. 0one of the a+o7e

1%. In HS syste, ?!6 is thea. !entraliGed aintenance and diagnostic heart of the S!+. !entraliGed aintenance and diagnostic heart of the 0SSc. !entraliGed aintenance and diagnostic heart of the >SSd. !entraliGed aintenance and diagnostic heart of the >TS

1*. aiu data rate achie7ed in H6S isa. 1%% 8+ps+. 1'1.2 8+psc. #3% 8+psd. 2 +ps

1-. !!S systes transfer signals at the rate ofa. -% 8+ps+. 1%% 8+psc. 1'1.2 8+psd. #3% 8+ps

1'. In !!S ' protocol stack coprises ofa. % layers+. * layersc. - layersd. # layers

13. "rea ser7ed +y one network operator

#4


40/103

a. L0+. L"Ic. !HId. S! "rea

. =rite full for of the following

1) I S ; 0 K Integrated Ser7ices ;igital 0etwork2) H S ! K Hateway o+ile ser7ices Switching !enter#) S T 0 K u+lic switched Telephone 0etwork%) ?! K ?peration and aintenance !entre*) ISI K International o+ile Su+scri+er Identity-) SI K Su+scri+er Identity odule') "! K "uthentication !enterK3) TS K ni7ersal o+ile Telecounications Syste4) !;6 K !all ;etail 6ecord1) HHS0 K Hateway H6S Support 0ode

Fill in the lank

1. "+is2. %#. L0%. 2**. >TS to S-. 4#* to 4-'. 33. %4. HS8 1. #

=rite True or False

1. T2. T#. T%. 5*. 5-. 5'. T3. T4. 51. T

4nswer all the Guestions

1.icro, selecti7e ,u+ralla , large,sall,pico2., "+is, ,", >, ! , ; , D ,5,H, E.2*#. a.


41/103

c. S! in the sae S! d.@ 2*1. >11. !

%1


42/103

12. >1#. >1%. !1*. >1-. "

1'. "13. "

C3,4 =55

I

4 FI55 ;* T9E 54!?S =IT9 S;IT45E =2+3S:

1. The spread spectru signal rate is __________________ +ps.(1.2233)

2. aiu data rate in IS 4*" network is ______________ 8+ps.(1%.%)

#. The digital odulation ethod used in !;" syste is _______________.

($S8)

%. 0on !;" calls are routed through _______________________.(S!)

*. Aoice coding rate used in !or ;ect syste __#2_____________ 8+ps.

-. aiu nu+er of !>S connected to one >S; is _________%__________.

'. LH syste will function as a "ccess 0etwork when the >S! is connected to

ST0 using ___A*.2 signaling.

3. 5ied wireless stations whose ast B tower height does not eceed

_____________ eters coes underost height category.

4. ?! used for the tce of SS is _____________________.(?!S)

1. 5orward Link traffic channels (@alsh code)

11. !ell sector identification (0 short code)

12. Su+ identification (0 long code)

1#. 6e7erse Link traffic channels ( 0 long code)

ST4TE T+;E 2+ F45SE IF F45SE C2+++ECT T9E

;!3E+,E!TI2!E3 *2+TI2!:

1. !;" 2 IE supports 8oie and 3ata.-T

2. The 7alue of S.B0 re:uired for !;" syste is low.-T

%2


43/103

#. In re7erse link the channels are separated +y long odes..-T

%. The down link fre:uency range in 3


44/103

+. Synchronisation of +ase station to ni7ersal !oordinated Tie

c. 6e7erse link gated transission

d. 5orward ilot channel

*. @hich is the ethod adopted for assigning a Suppleental !hannel for a 7ery large

duration to users that need to download a large aount of data and release that S!< as

soon as the user +ecoes idle

a. Infinite duration +. seudo infinite assignent

c. seudo finite assignent d. 5ied assignent

Fill up the blanks:

1. The nu+er used to identify a @LL


45/103

1. I @ 5

2. S !

#. S ; 0

%. > T S*. > S

-. 0

'. 5D!

3.


46/103

2. Spacing in 65 +) !hina ade

#. OTD c) >TS

%. Identity of !ell / Sector d) 1.2* S;

Tik the orret 4nswer.

1. !or ;D!T Syste works on

a. 1- 8+ps

+. #2 8+ps

c. -% 8+ps

d. 123 8+ps

2. ?ne !>S can handle aiu

a. 1 siultaneous 7oice calls

%-


47/103

+. 11 siultaneous 7oice calls

c. 12 siultaneous 7oice calls

d. 1* siultaneous 7oice calls

#. aiu ;ata 6ate possi+le for a su+scri+er is

a. #* 8+ps

+. ' 8+ps

c. 1%% 8+ps

d. 1'1.2 8+ps

%. 5re:uency >and for cor;D!T in >S0L is

a. 13 to 132


48/103

=rite full for of the following

1. I@5K Inter @orking 5unction

2. S!K o+ile Switching !entre

#. S;0K acket Switched u+lic ;ata 0etwork

%. >TSK >ase Transcei7er Su+syste

*. >SK >ase Station anager

-. 0K seudo rando 0oise

'. 5D!K 5orward Drror !orrection

3.


49/103

1. @SK @all Set2. ;IK ;D!T Interface nit#. 6>SK 6elay >ase Station%. 6"SK 6eote "ccess Switch*. >;SK >ase Station ;istri+utor

Tick the correct "nswer.1.+, 2.c , #.+, %.c, *.c5ill in the +lanks.

1. 2 , 2. 2*@, #. H5S8, %. 1, *. >oth

%%. State True or False

1. The +asic frae length of 2 s is di7ided into 1- e:ual power control groups.

2. The re7erse link power control coand +its are punctured into 65!< or 6

;!!TS

falls +elow the ;rop Threshold, it is added to the "cti7e set.

%. In the !;" transission syste, soft handoff technology refers to the intercell

handoff using Yconnecting to the new cell after disconnecting the original oneZ.

*. Long 0 !odes differentiate +ase stations.

Expand the following:

1. T";;

2. DA;?

#. TL;0

%. I0

*. 0I;

1. The +andwidth re:uired for a single !;" channel is(a) 1.2233


50/103

(d) roprietary Signalling

#. The ultiple "ccess ethod used in !;" Technology is(a) 5;"(+) T;"

(c) 5;"BT;"(d) !;"

%. The +andwidth used for !;" Technology is(a) 3-% 9 3-3


51/103

4!S=E+

1. >S! and ?! are connected with NNNE.2*NNN. Link

2.>S! works on NN%3NNN.. Aolt ;!. (92%, %3,

-% )

#.NNSofter NNN.TS. (Soft, Softer,


52/103

e) ;D!T can support ore than NNNNNN data rates .

f) ?ne >S; can support NNNNN..nu+er !>S

g) aiu distance +etween !>S / @S is NNNNNN8.

h) aiu distance +etween >S; / !>S is NNNN.. 8

i) aiu distance +etween !>S / 6>S is NNNNNN8

)" +uilt 9in+attery pro7ides NNNNNhrs talk tie for 7oice call.

a) ?ne ;IJs can support 1 su+scri+ers. T+) aiu * !>S can +e connected to one >S;. 5c) ?ne !arrier can supports aiu 1 channels at a tie. 5

d) Aoice coding is #2 k+ps ";! . Te) ?ne ;I can support a. 2 !>SJs. T

write full for Ka) @S Q @all Set

+) ;I Q ;D!T Inter face nit

c) 6>SQ 6elay >ase Station

d) 6"S Q 6eote "ccess Switch

e) >S;Q >ase Station ;istri+utor

5ill up +lank Ka) 5re:uency +and is N133N.. toNN14N. S; can support NNN%NN..nu+er !>S

g) aiu distance +etween !>S / @S is NNN1NNN8.

*2


53/103


54/103

1#. NNNNNtieslot is reser7ed for carrying signaling and NNNN. is reser7ed

for carrying synchroniGation inforation.(TS1- , TS )

1%. ;uration of ultifrae is NNNNN.(2 illiseconds)

1*. In e7en fraes TS carries NNNNN. and odd fraes TS carries NNN..

(5"@ and "lar signal)

1-. The frae 5? carries NNNNN..in TS1-.(5"@)

1'. The # channel syste follows NNNNNNN.. interlea7ing ethod.(>it)

4nswer the following:

1.ention the processing steps in7ol7ed in the foration of a ! signal fro an

analog signal

5iltering,Sapling,$uantising,Dncoding,/Line coding

2. "nswer the following with respect to a ! frae

a. Total nu+er of +its per frae K 2*-

+. Total nu+er of fraes per secondK3

c. Total nu+er of +its per secondK2%3 8+ps

d. ;uration of a ! 5rae K12* icro seconds

e. ;uration of one tieslotK #.4 icro seconds

f. ;uration of ! ultifraeK2 illi seconds

#. ention the forat of 3 +it en coded signal indicating the purpose of the +its

">! @E=O

olarity +it ,">! 9Segent code , @E=O 9 le7el in that segent

State true or false

1. The first +it of the encoded signal indicates the polarity of the signal.(T)

2. Tieslot Gero of e7ery frae carries the 5"@.(5)

#. The duration of ultifrae is 12* icroseconds. .(5)

%. Linear :uantiGation ethod is used to realiGe segented :uantiGation in !.

(5)

*. Tieslot 1- is used to carry signaling inforation. .(T)

*%


55/103

2FC A S

FI55 I! T9E 54!?S C922SI!> T9E 4**+2*+I4TE 4!S=E+ F+2, T9E

+4C?ET

1) 5or optical fi+re transission the range of wa7elength used is ___________ in the

infrared region. (.3 to 1.-[, .* to 1.#[, 1.- to 2[)

2) Aelocity of light in optical fi+re is _________ copared to that in air. (ore, less, sae)

#) 6efracti7e inde of core is _________ that of cladding. (sae as, greater than, less than)

%) ____________ fi+re propagate light through a nu+er of paths within the core.

(single ode, ultiode)

*) Spreading of light pulse in fi+re is caused +y ____________(attenuation, dispersion)

-) Single ode fi+re has ________ +andwidth. ( large, sall)

') 5or connections inside the e:uipent roo __________ fi+re is used.

(loose tu+e, tight tu+e)

3) In the ?5 ca+le used +y >S0L, the diaeter of the core is ________ and the

diaeter of the cladding is ______(*[, 12*[, 3[, 1%[)

4) Felly is filled in the acket to protect fro _____________ (oisture, cheical action)

1) The standard depth of ?5 ca+le trench is ____________(1.%, 1.*, 1.-*)

I. ,4TC9 J4K SI3E =IT9 4**+2*+I4TE C92ICE F+2, JK SI3Ea) 0uerical aperture 1) Triangular profile

+) odal dispersion 2) Light gathering a+ility

c) ;ispersion shifted fi+re #) ultiode

d) iniu attenuation %) Source

e) Spectral width *) Single ode fi+re

f) 6ayleigh scattering -) @a7elength dependent

g) @a7e guide dispersion ') 1**n

III 4nswer the following Guestions b$ putting a tik ark to the ost appropriate answer.

1) @hen a LD; or a L; is used as the optical source, it should +e .

a) 5orward +iased

+) 6e7erse +iased

c) Dither forward +iased or re7erse +iased depending upon signal strength.

**


56/103


57/103

a) Twice the noise current

+) 5our ties the noise current

1) ?ptical line code is

a) nipolar+) >ipolar

11) *> -> code should not contain ore than

a) * identical +its

+) - identical +its

c) 11 identical +its

12) If the 6;S Q C2, the change of state is fro

a) State 1 to state 2+) State 2 to state 1

c) !ontinues to reain in state 1

1#) @hen the decoder in the uncertain state recei7es the net word with 6;S e:ual to Gero

a) It continues to reain in the uncertain state

+) It goes to state 1

c) It goes to state 2

I8 Sa$ True or False. If False orret the underlined portion.-w.r.to 16 Chl *C,

1) The duration of a frae is 12* icro sec

2) Sapling rate of A5 channel is 3 tiesBsec

#) Sapling rate of signaling inforation is 1 tiesBsec

%) Line code used for 2.%3 +Bs is #

*) 5rae alignent word is sent in TS of e7en fraes

8. 4nswer the following Guestions with respet to 0ndorder digital ux b$putting a tik ark against the ost appropriate answer.

1) Tie slot 1-1 in the frae always contain

a) 5our ustification +its per tri+utary

+) " ustification control +it per tri+utary

c) Fustification +it or inforation +it, one per tri+utary

*'


58/103

2) The nu+er of 11+it elastic store per ultipleer unit is

a) 3

+) 1

c) %

#) erforated clock of 2112k+Bs is used for

a) @riting the tri+utary data into the +uffer eory of the ultipleer

+) 6eading the data fro the +uffer eory in the deultipleer unit

c) @riting the data into the +uffer eory of the deultipleer unit

%) In the 2ndorder ;E fraes

a) >its fro % priary ! streas are interlea7ed

+) ! words (3 +its) fro priary ! systes are interlea7ed.

c) Saples of speech fro 12 channels are interlea7ed.

*) The alar +it in +it position 0oK11 in the frae structure is detected in

a) ultipleer unit

+) ;eultipleer unit

c) "lar unit

d) Interface unit

AI. Fill in the blanks suitabl$ b$ hoosing ost appropriate hoie fro the brakets- w.r.to %B6 ,b 9FC5 S$ste

1)


59/103


60/103


61/103


62/103

2-. #-2'. hu+23. >angalore24. a#. d

#1. d#2. ;igital Satellite hone Terinal##. Sikandra+ad ()#%. a#*. 2% hrs


1.?ne ! strea has _________ A5 channels

1) 2%

2) #2

#) #

2.?utput of the ! line coder is ______________code.

1) #

2) "I

#) !I

#.ST1 frae is represented +y a atri of _____________________________1) 4 rows / 2' coluns

2) 2' rows / 4 coluns

#) 4 rows / 2-1 coluns

%.@hen diffraction increases ,+and width of fi+re ________

1) decreases

2) increases

#) reains the sae

*.Dach +yte in S;< payload represents a

1) 2+ps

2) -%8+ps

#) 3+ps

-.>it rate of ST1 Signal is _________________________.

1) 1**.*2 +ps

-2


63/103

2) 1**.*2 H+ps

#) 1**.*2 8+ps

'.ST1 can accoodate _____________ nu+er of 2 +ps tri+utaries.

1) -% 2)-# #)21

3.Spectral width of L"SD6 is _________________ than that of LD;

1) sae

2) ore

#) less

4.Felly filled in +uffer tu+e is to protect fro _________________

1) 6odents

2) "cidity

#) oisture

1.The tool used to reo7e the priary coating of fi+re

1) !lea7er

2) Stripper

#) Sheath reo7er

11.5or connections inside e:uipent roo _____________ ca+le is used

1) Tight +uffered

2) Loose +uffered

#) n+uffered12.Standard depth of ?5 !a+le Trench is ______________

1) 1

2) 1.*

#) 1.-*

1#.?T;6 uses the following principle for its working

1) +ack scattering

2) dispersion

#) diffraction

1%.art of optical connector used for alignent of fi+re is

1) 5errule

2) "dapter

#) !onnector +ody

1*.Light gathering capacity of fi+re is epressed as

-#


64/103

1) dispersion

2) attenuation

#) nuerical aperture

II.Dpand the following

#

!I

ST

;@;

+243 4!3

1.@hat are the eleents in >road+and ultiplay aggregation network

1. >0H (>road+and 0etwork gateway)

2. 66 Tier1BTier2 switch

#. ?! L"0 switch

2.@hat are the coponents of S

oti7e and etasol7

#.@rite any one ulticasting protocol supported +y >0H

I (rotocol Independent ulticasting), IH (Internet group anageent

protocol) and ulticast routing.

Choose the Corret answer

%.@hich de7ice is acting as the gateway of the >road+and traffic towards the LScore

!>?!L"0 Switch, ;SL"

*.The ?! L"0 switch is deployed as -Tier 0network de7ice in the >S0L ulti play;SL", Tier 1, Tier 2, >0H

Fill in the lanks

-.The application syste responsi+le to present a we+ portal to the eligi+le su+scri+ers toena+le re:uest for 7arious ulti play ser7ices is Subsriber Ser"ie Seletion S$ste-SSSS.

'.The (+43I;S based ser"er) ser7er will authenticate su+scri+er credentials with thehelp of L;".

-%


65/103

3.66 technology is optiiGed for ro+ust and efficient packet networking o7er (fiberringtopology.

4.ro7isioning of ser7ices on the network eleents using the DS is facilitated +y4S4*-4utoated Ser"ie 4ti"ation *rogra application.

Duestion ank of !III *+2ECT SE+8ICES

1) "ll "2,"# nodes of 0I>II roectI are dual esh to "1 using NN. ( ST1-)2) "ll >1,>2 nodes of 0I>II roectI are dual esh to " using NN. ( ST1)#) 0I>II roect1 is forNNNN(LS A0 or LS +ased I infrastructure)%) 0I>II roect2.1 is forN ("ccess Hateway latfor for 0arrow+and internet)*) 0I>II roect2.2 is forNN("ccess Hateway latfor for >road+and internet)-) 0I>II offers fully anaged ser7ices to custoers. (T6D)') 0I>II offers >andwidth on deand o7er the sae network. (T6D)3) List out any four ser7ices offered +y 0I>II proect.

Internet access, A0, A"S, essaging, >> ser7ices through ;SL and;irect Dthernet.4) @hat are the ser7ices offered in 0I>II roect#

essaging and storage ser7icero7isioning, >illing and !ustoer careDnterprise anageent SystesSecurity systes

1) @hat are the coponents of narrow +and access network in 0I>II0arrow +and 6"SL"0 switch

DS Ser7er (Dleent anageent Syste)!IIS*

1.0I>_II has +een ipleented in proects (#)2.0I>1 is connected to 0I>II under proect ( roect2.1)#.router is used in the core network( !IS!? 12%1-)%.!ore "1 nodes are a7aila+le locations (*)*.;ata center of 0I>_II is at ( >angalore)

=rite the expansion of the following

LS K ulti rotocol La+el SwitchingA0 KAirtual ri7ate 0etwork.0"T K 0etwork "ddress Translation.0?! K 0etwork ?peration !enter.DS K Dnterprise anageent Syste.S K ro7isioning anageent Syste.

4nswer the following

1.@hat are the 0I>_II proects

-*


66/103

roect1 , roect2.1, roect2.2 and roect#

2.@hat are the ser7ices planned fro 0I>_II1) 0arrow +and and +road +and internet ser7ices.

2) LS_A0 ser7ices#) Aalue added ser7ices and%) essaging ser7ices.

#.@hat are the 7alue added ser7ices fro 0I>_II1)Dncryption ser7ices2)5irewall ser7ices and#) 0"T ser7ices

;0S

1.@hat is ;0S

2.@hy ;0S is needed #. @hat are three types of TL;s %.@hat are the coponents of ;0S*.0ae % coonly used top doain naes-.Dplain how ;0S works

TrueB5alse (1 each)

1. ;0S ser7ers, also called as nae ser7ers2. ;0S traces its origins to "6"0DT

!etwork Seurit$

1.;efine what is network security 2.@hat is social engineering #.@hat are the ethods of social engineering %.0ae the three +road categories of attach *.@hat is firewall-.@hat is tunneling'.0ae the two categories of tunneling

TrueB5alse

1. Airus can spread without huan help (5)2. @ors need a software port to act (5)#. Troens need a software port to act (T)

Dpand the following

1.SSSS2.SSS!

--


67/103

#.L;"%."""

3ata ouniation A !etworking

1. The ?SI odel consists of _______ layers.(')

2. The error detection ethod in7ol7ing polynoials is ___!6!_____

#. " router functions in the _______ layer of ?SI odel.(#)

%. The cell siGe of "T is ______ +ytes.(*'-)

*. The endtoend deli7ery of the entire essage is the responsi+ility of the

_____________ layer(%)

II. Tick the correct answer fro the gi7en choices

1. ____ are rules that go7ern a counication echange(a) edia(+) !riteria(c) rotocols(d) "ll of the a+o7e

2. !ounication +etween a coputer and a key+oard in7ol7es ________transission

(a) Siple(+)


68/103

(a) hysical(+) ;ata link(c) Transport(d) 0etwork

-. Drror detection is usually done in the ____ layer of the ?SI odel

(e) ;ata link(f) 0etwork (g) hysical(h) "ny of the a+o7e

'. @hich error detection ethod uses oneJs copleent arithetic

(a) A6!(+) L6!(c) !6!(d) !hecksu

3. @hich error detection ethod in7ol7es polynoials

(a) A6!(+) L6!(c) !6!(d) !hecksu

4. In cyclic redundancy checking, the di7isor is ___ the !6!

(a) The sae siGe as(+) ?ne +it less than(c) ?ne +it ore than

(d) Two +its ore than1. In !6!, there is no error if the reainder at the recei7er is _____

(a) D:ual to the reainder at the sender(+) Oero(c) 0onGero(d) The :uotient at the sender

11. In a ____ connection, ore than two de7ices can share a single link.

(a) ointtopoint(+) ultipoint

(c) riary(d) Secondary12. "nalog signals are characteriGed +y

(a) "plitude and signal(+) "plitude and fre:uency(c) 5re:uency and phase(d) "plitude, fre:uency and phase

-3


69/103

1#. ! is an eaple of _____ con7ersion

(a) ;igitaltodigital(+) ;igitaltoanalog(c) "nalogtoanalog

(d) "nalogtodigital1%. @hich of the following is ost affected +y noise

(a) S8 (+) "S8(c) 5S8 (d) $"

1*. The standard odulation protocol(s) for highspeed odes

(a) A.#2(+) A.#2+is

(c) A.21(d) >oth a and +1-. The aiu copression ratio for a A.%2+is ode is

(a) %K1(+) 1K%(c) 2K*(d) 0one of these

1'. In sliding window flow control, if the window siGe is -#, what is the range ofse:uence nu+ers

(a) to -#(+) to -%(c) 1 to -#(d) 1 to -%

13. @hen a priary de7ice wants to send data to a secondary de7ice, itneeds to firstsend ____ frae.

(a) "n "!8 (+) " poll(c) " SDL(d) "n D0$

14. "n "!8# in sliding window flow control (window siGe of 3)eans that frae___ is net epected +y the recei7er.

(a) 2(+) #(c) %(d) 3

2. In stopand wait "6$, if data 1 has an error, the recei7er sends a ______ frae.

-4


70/103

(a) 0"8 (+) 0"8 1(c) 0"8 2(d) 0"8

21. @hen data and acknowledgent are sent on the sae frae,this is called

__________

(a) iggy+acking(+) >ackpacking(c) iggypacking(d) " good idea

22. @hich of the following uses the greatest nu+er of layers in the ?SI odel(a) >ridge(+) 6epeater

(c) 6outer (d) Hateway2#. @hich topology re:uires a central controller or us(d) 6ing

2%. @hich L"0 has the highest data rate

(a) 1>"SD*

(+) 1>"SDT(c) twistedpair token ring(d) 5;;I

2*. The ____ register holds the aount of tie a station has to send its synchronousdata

(a) Synchronous allocation (S")(+) Target token rotation tie (TT6T)(c) "+solute aiu tie ("T)(d) Token rotation tie (T6T)

2-. The E.2* operates in the _____ of the ?SI odel

(a) hysical layer(+) ;ata link layer(c) 0etwork layer(d) "ll the a+o7e

III. Say whether the following stateents are True or 5alse. If it is false correct theunderlined word.

'


71/103

1. The nodenode deli7ery of the data unit is the responsi+ility of the

hysical Layer. (5) ;ata link layer

2. The retransission of daaged fraes in the data link layer is known as

5low control. (5) Drror control

#. In go+ackn "6$, if fraes %,*,- are recei7ed successfully, the recei7er

ay send an "!8 - to the sender.(5) "!8'

%. " defacto standard is one which has +een legislated +y an officially

recogniGed +ody.

IA. Dpand the following.

1. us (+) 6ing (c) Star (d) 0one of the a+o7e)

2. @hich of the following L"0 topologies re:uires ore edia.

(a) >us (+) 6ing (c) Star (d) 0one of the a+o7e)

'1


72/103

#. Token 6ing passing is not the edia "ccess ethod in which of the followingtopologies.


%. In which of the following topologies there is no sharing of edia


*. 5or ipleenting 6ing topology the preferred edia is

(a) ?ptical 5i+er (+) Twisted pair ca+le (c) !oaial (d) 0one of thea+o7e.

-. In the Token 6ing frae forat the +lock which is specifying that the frae is a

data frae or a token frae is

(a) S" (+) 5! (c) 5!S (d) 0one of the a+o7e.

'. The edia "ccess ethod used in Star Topology is

(a) ;istri+uted (+) Star !ontrol (c) !entrally !ontrolled (d) 0one of the a+o7e.

3. In which if the following !S" ethods stations wait for a specific inter7al oftie +efore checking the edia.

(a)0on ersistent (+)ersistent(c) 1ersistent (d) 0one of thea+o7e.

4. 6egister insertion is a edia "ccess control ethod in which topology


1. @hich of the following is not a contention access ethod.

(a) ure "loha(+) Token 6ing (c) 1 ersistent !S" (d) !S"State True or 5alse

11. In >us Topology nodes need not +e intelligent

12. 5or interconnecting 2 >us topology L"0s repeater is not re:uired.

1#. In token ring passing edia access ethod all the stations are in +roadcasting

ode.

1%. In ersistent not all the stations are allowed to transit siultaneously.

'2


73/103

1*. In !S"B!; stations do not listen to the channel while they are transitting.

5ill in the >lanks

1-. In 6ing topology the interconnecting nodes are called NNNNNNNN

1'. In >us topology data flow is N directional.

13. !S"B!; is a edia access ethod for NNN.. topology.

14. " NNNNN is used to +y pass a failed node in 6ing topology.

2. In NNNNN. !S" stations starts transitting the data iediately when thechannel is found free.

?e$ II

1. + -. + 11. 5 1-. 6ing Interface nits (6I)2. c '. c 12. 5 1'. >i#. c 3. a 1#. T 13. >us%. c 4. + 1%. T 14. ;ead an 6elay*. a 1. + 1*. 5 2. 1ersistent

III

Error 3etetion Corretion 3ata 5ink Control and *rotool

1. !6! is +ased on parity checking. (TB5) F

2. In !6!, the di7isor is the redundant +it. (TB5) F

#.


74/103

12. In go+ackn "6$, if fraes *, -, and ' are recei7ed successfully, the recei7er

ay send an "!8 _3___ to the sender.

1#. In go +ack nwhen a 0"8 is recei7ed, all fraes sent since the last frae

acknowledged are retransitted

1%. @hat are the three functions of the ;ata link control

1*. ention the categories of Sliding @indow Drror !ontrol.

1-. ention the ethods of "6$.

1'. ention the full nae of any three data link layer protocol.

13. To ensure the uni:ueness of flag Oero +it stuffing in


75/103

-. !ontent DrrorK Drror in the content of a +lock of data. It can +e +it error or +ursterror. >it error is coon in parallel transission and +urst error depends on datarate and noise duration.

5low Integrity DrrorK issing +lock of data due to reasons like deli7ery to a wrongdestination.

'. arity !heck K In parity check, at the sending end, a single redundant +it is added+y counting the nu+er of 1s in the data word, to ake the parity either odd ore7en including the parity +it and at the recei7er, the checking function detects theparity +it accordingly and finds out errors if any.

!6!!yclic redundancy check K In !6!, for each protocol there is a predefineddi7isor in the for of a polynoial. The data to +e sent is di7ided into anagea+le+locks and each +lock is di7ided +y the predefined di7isor. The reainder isappended to the data +lock and sent. "t the recei7er when the incoing codeword is

di7ided +y the sae di7isor, if no reainder is got, it is assued that there is no error.!6! +its(6eainder) will +e always one +it less than the di7isor. sing E?6 gateand Shift registers the circuit is ipleented so that the di7ision perfored isodulo 2. (shifting right, coparing)!hecksuK This is an error detection echanis eployed +y upper layers. ack n "6$.1%. edia "ccess !ontrol (Line ;iscipline), 5low !ontrol, Drror !ontrol.1*. Ho +ack n and Selecti7e 6eect.1-. Stop and @ait and Sliding @indow.1'. isynchK >inary Synchronous ;ata Link !ontrolDthernet, Token 6ing.Koint to oint rotocol.L" > KLink "ccess rocedure >alanced.13. >it stuffing.14.

'*

FLAGFCS34T4CONTROLA

D

D

R

ES

F54>


76/103

5lagK ?ne +yte 111111, sed for synchroniGation. >it stuffing

guarantees the uni:ueness of flag.

"ddressK one +yte. Indicates the address of the secondary station.

!ontrolK ?ne +yte or 2 +ytes. >egins with for Inforation frae,

+egins with 1 for Super7isory frae and +egins with 11 for nnu+ered

frae.

;ataK Aaria+le.

5!SK 5rae !heck Se:uence. 5or Drror detection. 2 +yte !6! is used here.

2. Inforation frae (I ) K 5or data, piggy +cked acknowledgeents.Super7isory frae ( S ) K5or !ontrol (5lowBDrror) inforation.

nnu+ered frae ( )K 5or Link angeent.

21. 1.Inforation frae, frae ' is sending, "!8 -.

2. Super7isory frae, 0"8 #B 6e #. (Ho +ack n error control)

#. Super7isory frae, 0"8 #B 6e #. (Selecti7e 6eect error control)

%. Super7isory frae, 6ecei7er 6eady, "!8 %.

*. Super7isory frae, 6ecei7er 0ot 6eady "ck 1*. (5low !ontrol)(Dtended)

-. nnu+ered frae.

'.Inforation frae, frae -' is sending, "!8 12 (Dtended)

I8

1. The secondary de7ice in a ultipoint configuration sends data in U Vresponse to ______

(a) an "!8(+) an D0$(c) a poll(d) a SDL

2. In sliding window flow control, if the window siGe is -#, what is the range ofse:uence nu+ers U V

(a) to -#(+) to -%(c) 1 to -#(d) 1 to -%

#. In sliding window flow control, the fraes to the left of the recei7er window arefraes _______ U V

'-


77/103

(a) recei7ed +ut not acknowledged(+) recei7ed and acknowledged(c) not recei7ed(d) not sent

%. 6egulation of the rate of transission of data fraes is known as U V(a) line discipline(+) flow control(c) data rate control(d) switch control

*. ____ decides the role (sender or recei7er) of a de7ice on a network U V(a) line connection(+) link connection(c) line discipline(d) link decision

-. The retransission of daaged or lost fraes in the data link layer U V

is known as _______(a) error control(+) error conditioning(c) line discipline(d) flow control

'. @hen a priary de7ice wants to send data to a secondary de7ice, it U Vneeds to first send ____ frae.

(a) an "!8(+) a poll(c) a SDL(d) an D0$

3. @hen a secondary de7ice is ready to send data, it ust wait for ____ U Vfrae.


4. In a peertopeer syste, when one de7ice wants to send data to U Vanother de7ice, it first sends _____ frae.


1. 5low control is needed to pre7ent_____ U V(a) +it errors(+) o7erflow of the sender +uffer(c) o7erflow of the recei7er +uffer(d) collision +etween sender and recei7er.

11. In go+ackn"6$, if fraes %, *, and - are recei7ed successfully, U V

''


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the recei7er ay send an "!8 _____ to the sender.(a) *(+) -(c) '(d) any of the a+o7e

12. 5or a sliding window of +uffer siGe n, there can +e a aiu of U V___ fraes sent +ut acknowledged.(a) (+) n1(c) n

(d) nC11#. "n "!8# in sliding window flow control (window siGe of 3) U Veans that frae ___ is net epected +y the recei7er.

(a) 2(+) #(c) %

(d) 31%. In stopand wait "6$, if data 1 has an error, the recei7er sends a ___ U Vfrae.

(a) 0"8 (+) 0"8 1(c) 0"8 2(d) 0"8

1*. In ____ "6$, when a 0"8 is recei7ed, all fraes sent since the last U Vfrae acknowledged are retransitted.

(a) stopandwait(+) go+ackn(c) selecti7ereect(d) a and +

1-. In ___ "6$, if a 0"8 is recei7ed, only the specific daaged or lost U Vfrae is retransitted.

(a) stopandwait(+) go+ackn(c) selecti7ereect(d) a and +

1'. "6$ stands for _____ U V(a) autoatic repeat :uantiGation(+) autoatic repeat re:uest(c) autoatic retransission re:uest(d) acknowledge repeat re:uest.

13.@hich of the following is not a Layer 2 functiona.error control+.Dncriptionc.line disciplined.flow control

'3


79/103

?e$ I8

1. c 2. a #. + %. + *. c -. a '. c 3. + 4. d 1. c 11. c 12. c 1#. + 1%. d

1*. d 1-. c 1'. + 13.+

!hoose the correct answer

1. @hich of the following is ost affected +y noisea) "plitude Shift 8eying+) 5re:uency Shift 8eyingc) hase Shift 8eyingd) 0one of the a+o7e

2. odulation of an analog signal can +e accoplished through changing the

___________ of the carrier signal.a) "plitude

+) 5re:uency

c) phase

d) all of the gi7en

#. In_____________ transission, +its are transitted siultaneously, each across its

dedicated wire.

a) "synchronous serial

+) Synchronous serial

c) arallel

d) "synchronous / Synchronous serial

%. In_____________ transission, +its are transitted o7er a single wire, one at a tie.

a) "synchronous serial+) Synchronous serialc) aralleld) "synchronous / Synchronous serial

*. "s per ShannonJs capacity theore, e7ery transission ediu has a_______________ data rate.

a) iniu+) aiuc) Oerod) Infinite

5ILL TL"08S

'4


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1. 5or error detection , an etra +it called the _____________ is added to eachword in a data transission.

2. In ____________ transission, we ha7e to synchroniGe the source anddestination for each character.

#. The _________________of a coposite signal is the difference +etween thehighest and the lowest fre:uencies contained in that signal.

%. The ost widely used data code "S!II consists of 3 +its of which ' are______________+its and one ______________ +it.

True/False

1.

3


81/103

II. Fill up the blanks

1. ;ecryption and encryption of data are the responsi+ility of the NNNNNN. layer.

(resentation)

2. aiu segent length in case of 1+ase* L"0 will +eNNNNNNNNN.

(*)

#. @hen a secondary de7ice is ready to send data, it ust wait for NNNNNNN

frae.(oll)

%. 6outer works in NNNNNNNNNN. layer of ?SI odel.(#)

*. In go+ackn "6$, if fraes %, *, and - are recei7ed successfully, the recei7er

ay send an "!8 NNNNNNNN to the sender.(')-. I address 1111.11111.11111.111 +elongs to (")

'. If a carrier signal has % le7els then the >it rate will +e that of >aud rate.

3. I7- address consists of +its.(123)

III. 4nswer the following Guestions briefl$

1. @hat do you understand +y the ter protocol

2. @rite the specific responsi+ilities of 0etwork layer

#. @hat is differential anchester coding

%. ;istinguish +etween T! and ;.

*. !opare +etween Ho>ackn and Selecti7e6eect.-.5or the I address 21.222.*.121B23 , find the following

a.Su+net address+. andwidth offered for a noral su+scri+er through

>road+and is .

2. In +road+and network of >S0L ;SL" is placed +etween

NNNNNN..and NNNNNNNNNNN

#. Type II !D pro7ided under ultiplay proect is ha7ing Dthernet ports.

%. The technology used in the T2T1 switch traffic aggregation in ultiplay

network is ________________.

31


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*. The custoer preises e:uipent in proect 2.2 is also known as

NNNN.

-. The protocol used in 0I> II for routing the packets is NNNNNNN..

'. >6"S in conunction with authenticates the custoer.

3. The 0"T function in ";SL ode is for

4. Tier I and Tier II switches are doing layer functions of ?SI

1. In 6outer ode of configuration, the >6"S will +e allotting I address to

II. Expand the followinga. S +. >0Hc. SSSS

d. ?SSe. A65 f. ;T

III. 4nswer the Guestions briefl$

1. 0ae any two network eleents re:uired for ipleenting @i5i.

2. Dplain the technology +ehind ";SL . #. Hi7e any two functions of the following networking eleents of >road+and.

(a) >6"S (+);SL"

%. ;raw the architecture of LS A0 network and ark all eleents in7ol7ed.

*. Is it possi+le for two LS A0 custoers to use the sae I address forconnecting to the LS network . Dplain

-. ;raw the network archtecture of 0I> II proect 2.2 in " cities and ark the7arious network eleents .

,*5S Duestions

1. List the 2 +road classifications of A0 ipleentations.2. List the ain coponents of LS A0 architecture#. Dpansion of A65%. Dpansion of >H *. Length of A07% address -. in the custoer network interfaces with the ser7ice pro7ider.'. eists in the core of the pro7ider network in LS A0 architecture.

8ey

1. ?7erlay odel / eer to eer odel2. !ustoer nBw, !D 6outers, ro7ider network, D 6outers, 6outers

32


83/103


84/103

*. +-. 5'. T3. 54. T

1. TExpand

1. 6L2. 6";SL.#. ;I"S.


1. ention any # +rowser software.

2. Hi7e any # options for pro7iding user connecti7ity to the Internet.

?E@

Expand

1. nifor 6esource Locator.2. 6ate "dapti7e ;igital Su+scri+er Line.#. ;irect Internet "ccess Syste.


1. Internet Dplorer, oGilla 5irefo, ?pera, Safari, Lyn, 0etscape 0a7igator.2. ;ialup connections, ;I"S, >road+and, sing !a+le ode, Leased Line.

=orksheet for TC*/I*

1. 5irst 2% +its of "! address represents ( Identity of anufacture)2.T! is in the layer of T!BI suit (%)#.I is in the layer of the T!BI suit (#)%.0ae two application layer protocols

http and ftp*."! address is used in layer (2)-."! address is of +its length (%3 +its)'.what are the I address 7ersions (IA% and IA-)3.what is the data speed of fast Dthernet (1 +ps)4."pplication port nu+er is to identify (different applications in application layer)1.;iat up ode +elongs to which layer of T!BI suit (L1)

3%


85/103

=rite the expansion of the following

httpK State True or false

1."6 is used to resol7e physical address (T)2.6"6 is used to resole logical address (T)#.; is an application layer protocol (5)%.IA% is 123 +its address (5)*.Sourse and ;estination I address is added +y a coputer (T)-.T! is a connectionoriented protocol (T)'.I is a connection 9 less protocol (T)

=rite the nae of all the la$ers of TC*/I* suit

"pplication

Transport0etwork

;atalink

hysical

+esilient *aket +ing


1. Hi7e the IDD standard for 66a. 32.11

+. 32.1-c. 32.1'd. 32.1#

4ns. &60.%7

2. The reco7ery tie of 66 to achie7e protection against fi+re cut isa. Less than *s.+. Less than - s.c. Less than 12*\s

3*


86/103

d. 0one of these4ns. 5ess than 6s

#. aiu nu+er of 66 stations supported in an 66 ring..a. 1-%+. 1-

c. 2**d. 24ns. 0

%. The andatory protection schee eployed in 66a. @rapping+. Topology disco7eryc. Steeringd. ulticasting

4ns. Steering

4nswer the followingK1. Hi7e the three packet handling acti7ities of a 66 node

Insertion("dding a packet into the ring)5orwarding (Sending packet onward for transit traffic)Stripping or dropping(taking out the packet off the ring.

2. Hi7e the two packet deli7ery odes of 66Stict ode / 6elaed ode

#. Hi7e the classification +ased on traffic priority1) !lass " or preiu :uality (low latency, low itter)

su+class "(reser7ed) / "1(opportunistic ie if not usedgi7en class > /! )

2) !lass > or ediu :uality (predicta+le latency /itter), >!I6 (coitted inforation ratenon fe +utused if free) / >DI6 (Dcess inforation ratefe)

#) !lass ! or low priority traffic (Y+est effortZ class)

Introdution to 3=3,

I. !hoose the correct answerK

1. The Long +and of ?ptical spectru ranges fro________________________________.

3-


87/103


88/103

d. ention soe ethods for ?ptical ultipleing

e. ention the different ways +y which @; can act as a ulti Ser7icero7isioning platfor

4nswers:

a. " Transponder is a de7ice that adapts to the ar+itrary +it rate of the incoingoptical signal and aps its wa7elength to the chosen @; channel. Its ainfunction is ?D?. It con7erts wa7elength coing fro user e:uipent toelectrical signal and then the electrical signal is con7erted into optical signalof a specific wa7elength, which fors an optical channel for particular user.

"d7antages

1. Hreatly enhanced transission capacity.

2. 0ew ser7ices offered#. Transission of restructured signals.%. se of de7ices and interfaces for other 7endors.

+. ?ptical ultipleer?ptical ;eultipleer?ptical "plifiersTransponders6egenerators?";?ptical cross connects

c. ultiple use of fi+ers.Dtreely high transport capacity at lost.5orat and +it rate independency.

d. sing ris, sing ;iffraction Hrating

e. S;< o7er @;I o7er @;La+da ser7ices

C95 3=3, S$stes .

1. The @orking wa7elength range of OTD #2!hl ;@; Syste _____n to________ .("ns K 1*24n to 1*-*n )

2. The channel inter7al of OTD #2!hl ;@; Systea) * H


89/103

"ns K 1)?T 2) ?"; #) ?L"%. The wa7elength of the optical signal which carries super7isory channel of OE@

4 ( OTD ;@; syste) a) 1*n +)1%4 n c) 1*1n d) 1*2n ("nsK c )

*. The ain control processor card of OE@ 4 ( OTD ;@; syste) is known

as __________ ("ns K 0!)-. The ain control processor card of OE@ 4 ( OTD ;@; syste) is locatedin __________ Su+rack ("ns K ?")a) ?T +) ?" c) ower "lar d) 0one of these

'. The ?ptical Super7isory channel +oard of OE@ 4 ( OTD ;@; syste) islocated in __________ Su+rack ("ns K ?")a) ?T +) ?" c) ower "lar d) 0one of these

3. The ?ptical ultipleer and deultipleer of OE@ 4 ( OTD ;@;syste) is located in __________ Su+rack ("ns K ?T)a) ?T +) ?" c) ower "lar d) 0one of these

4. " aiu of _________ fi+res can +e connected to an ?;5 +oard of OE@

4 ( OTD ;@; syste). ("ns K %2)a) #% +) % c) 23 d) %21. ________ >oard perfors the processing of order wire in a super7isory channel.

a) ? +) ?" c) ?


90/103

'. The color of #'*thpair of a % pair IF5 ca+le is 0!3 54@E+54ST S;*E+

;!IT -54C? C252+ I!3E+ 1+3 ;!IT ->+EE! C252;+ I!3E+

) J4K =I+E )=9ITE A JK =I+ES54TE

3. The arking 2B.*B2%3 o7er the sheath of a ca+le indicates 066 *4I+/6. ,,

3I4,ETE+/ ,E4S;+E3 4T 0B&T9 ,ETE+ 5E!>T9.

4. The T!! recoends T9+EE E5ECT+23Etype of H; Tu+es.

1. In ducted ca+le syste ;!4+,2;+E3type ca+les are used for reducing cost

I8 3eode:

1. 3* B&60/67K TD6I0"L 0?.' ?5 ; 0?.2 !?0T6?LLD; >= ILL"60?.%3

2. ,3F %7'/0(K TD6I0"L 0?.24 ?5 5SD ST6I - ?0 AD6TI!"L 1'

8 3raw the s$bols

a) illar

+) Straight Foint

8I 4!S=E+ T9E D;ESTI2!S

a =rite Four ad"antages of Coputerised F+S.

"0= % ";A"0T"HDS "S HIAD0 I0 "HD 1## ?5


91/103

2) LI0D ;I"H6"K PRIMARY, SECONDARY, DISTRIBUTION,

JUNCTION, PRESSURISATION

!"6;SK DP, CABINET, PILLAR, MD, SUBSCRIBER INDEXI. Fill up the blanks:

1. The o7erpro7ision of distri+ution ca+le is ______________.

2. " telephone echange is to +e ideally situated at the ______________.

#. illars are gi7en two digit nu+ers fro ____ to ____%. " 2 pair ca+le of * length (Sk) is e:ui7alent to __________ck.

*. The software that is used for custoer relationship anageent in >S0Lare_____________ and ___________.

-. The software that deals with the anageent of redressal of pu+lic coplaintsis

'. roect estiates can +e prepared and sanctioned using the software called__________.

3. The three parts of the resource anageent software are ________, and____________.

4. _______________ Software deals with the ser7ice records of the staff.

1. anageent decisions on the free phone ser7ices, I0 cards are taken on the +asisof data aintained +y _________ software.

11. Aehicle anageent is done using _________ software in >S0L.

12. "T?S is the acrony for_______________.

1#. iniu download speed of >road+and in India

1%. @i5i is the technology used for

1*. sually a ST0 (+5one) line is working at +ps.

1-. "ggregation point at ser7ice pro7iders end fro 7arious custoersJ ";SL line

is

41


92/103

1'. aiu distance +etween ;SL" and TID6 92 Switch, if connected +y eans

of dark fi+res.

13. ";SL stands for("syetrical digital su+scri+er line)

2. Technology used in the +ack+one core 0etwork of >road+and is(LS)

Fill up the following with referene to the sur"e$ results on ustoer response

1. _____________] of custoers change the +usiness relation due to indifferentattitude.

2. _______________ 0u+er of the positi7e responses are re:uired to copensatefor one negati7e response of the operator.

#. ____________ ] of dissatisfied custoers wonJt gi7e the feed+ack to theorganisation.

%. " satisfied custoer would +ring __________ore new custoers.

II. Choose the orret answer

1. @orks in progress ependiture transferred to fied assets in respect of "/

a. @hen ege is coissioned +. @hen it is recei7edc. @hen ayent is ade d. 5ro the date of +illBin7oice.

2. Security guards can +e engaged in >S0L units through

a. ?pen tender +. Liited tender c. ;H6 0ew;elhi c. ;H6 0ew;elhi or state DS!orp

#. enal interest is charged for the delayed su+ission (+eyond # days) of "!D2accounts for Teporary ad7ance is

a. 1] per day +. 2] per onth

c. 1] per year d. 12] per year.%. "s per H56 2* , Liited tender procedure ay +e followed for purchase of

good.

a. p to 6s * +. to 6s 2 lakhs.c. p to 6s 1 lakhs c. p to 6s 2* lakhs.

*. To a7id !ST, for the goods transferred fro other states +y >S0L units(T.5B!HTS) the for to +e issued +y the recei7ing unit is

42


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94/103

1%) @I6DLDSS L"0 1*) -% 8 1-) ;SL"

1') 1 k 13) "syetrical ;igital Su+scri+er Line 14) LS

II FI55 ;* T9E 54!?S:

1) 76] -3] 2) %0 2* #) 4-] %) 1

III C922SE T9E C2++ECT 4!S=E+

1) a 2) d #) + %) d *) c

IA ,4TC9 T9E F2552=I!>

"^* >^% !^- 3% D^2

A ,4TC9 T9E F2552=I!>

"^% >^1 !^* ;^# D^2

*2=E+ *54!T

Fill up the blanks:

1 The capacity of Large Dchange ower lant is greater than 6 4.

2 In the con7entional # piece power plant the 56 output is regulated with in therange of %. N 6.A irrespecti7e of input 7oltage 7ariations of N %0 M.

# The sophoetric noise of Dchange power supply with a +attery of appropriatecapacity connected across the output is within 0 "

% iniu Insulation resistance of coponents w.r.t. earth in power plant is ,E>94 29,S

In the on"entional 1 piee power plant to liit the harging urrent "ariations

>"LL"ST !


95/103

' The two power con7erters in SS odule are 22ST C2!8E+TE+ A 3C3C C2!8E+TE+

3 ?utput 7oltage of SS odule in float ode is B N 6. A and in charge ode is

.0 N 6. 8

4 In SS odules, to reduce the switching losses of the seiconductors due to nonGero switching ties S!;E+ CI+C;ITis pro7ided

1 In SS, the current signals are onitored continuously to ensure e:ual sharing ofcurrent is perfored +y *2=E+ S@STE, C2!T+255E+ -*SCcard in ,4I!rack

11 The capacity of the +attery increases with I!C+E4SE in teperature

12 In parallel +attery float schee of working, the end point for the discharge of the

cells has to +e liited to %.(0 7olt per cell

1# The type of charger suita+le for charging A6L" +attery is C2!ST4!T825T4>E C;++E!T 5I,ITI!> C94+>E+ 2+ C2!ST4!T 825T4TE

C94+>E+.

1% A6L" +attery works on 2E! +EC2,I!4TI2!rinciple and therecoended float 7oltage of A6L" +attery is 0.0A! at 2'o!


1 @hat are the points to +e considered for deciding the capacity of power plant

needed for an echange

%. 4TTE+@ C94+>I!> C;++E!T -4TTE+@ C4*4CIT@ 4T

T9E +4TE 2F ' 9+ 4C?;*

0. ;S@ 92;+ 5243 -92= 52!> 4TTE+@ IS +ED;I+E3 T2

S;**5@ 3;+I!> ,4I!S F4I5;+E.

2 ention iportant four alars displayed in Switching !u+icle.

,4I!S F4I5 *94SE F4I5 2;T*;T F;SE F4I5 +ECTIFIE+ E5E,E!T

F;SE F4I5 S,22T9E+I!> FI5TE+ F;SE F4I5 CI+C;IT +E4?E+

T+I* 9I>9/52= 825T4>E 454+, 28E+ 5243 454+,

#.@hat is eant +y efficiency of a power plant

4*


96/103

+4TI2 2F 3C 2;T*;T =4TTS T2 4C I!*;T =4TTS 4T T9E !2+,45

I!*;T 825T4>E -!2T 5ESS T94! 7M I! 54+>E EE F+s ;*T2

066 4,*S 4!3 &6M I! C4SE 2F 9I>9E+ 2;T*;T C4*4CITIES

,ath the following:

1 8nife switches a) !orrosion

2 @eak cell +) >attery charging

# ;! shunt c) Low S.H / p.d

% !urrent transforer d)easuring ;! current

e) onitoring the input current

f) S!6 firing circuit

g) Drror "plifier

4nswer: % O bP 0 O P 1 O d P B OeP

Choose the orret answer fro aong the hoies

1. @hat is the auto charge le7el in the SS syste

a) *%. A +) **.2 A c) -*. A d) 0one of these.

2. The positi7e electrode in the A6L" +attery is ade ofK

a) +?2 +) + c)


97/103

a) 6etarded +) 0either ad7anced nor retarded

c) "d7anced d) 0one of these.

3. The circuit eleent used in power plant to read the input current of 6=> phases isK

a) Shunt +) Synchronisation transforer

c) !urrent transforer d) hoto coupler

4. @a7e for across the capacitor in the eitter circuit of an FT isK

a) S:uare wa7e +) Sine wa7e c) Triangular wa7e d) Saw tooth wa7e

1. @ techni:ue akes use ofK

a) !onstant pulse width +) !onstant switching fre:uency

c) Aaria+le fre:uency d) Aaria+le cycle oscillator.

11. >oost con7erter works on the principle ofK

a) 5ull +ridge topoly +) >oost topology

c) hase shift @ d) Switching regulator

12. Isolation transforer in ;! ;! con7erter stage is a ust.

a) It is true +) It is false

c) It is partially correct d) !an work e7en without a transforer

1#. The output 7oltage of a >asic >oost !ell isK

a) % 7olts "! +) % 7olts unregulated ;!

c) % 7olts sta+iliGed ;! d) %* 7olts sta+iliGed ;!

1%. @hich one of the following is not a function of S!

a)D:ual current sharing +) !ontrol the operation of the odule

c) pulse width control d) Shutting of the faulty odules

1*. In S, for fast change o7er of priary and secondary sources, the +est choice

isK

a) " sensiti7e relay +) " high speed relay c) " triac

d) " thyristor

1-. In on line S the in7erter will +e ?0 only during ains fail.

a) True +) 5alse c) ;uring syste failure d) 0one of the a+o7e

1'. The earth connection for the in7eter isK

a) 5ro the D> earth +) to +e done separately for in7erters

c) 5ro the e:uipent earth d) none of these.

4'


98/103

13. Stand alone in7erters used in Dchanges pro7ide "! 7oltage with a fre:uency ofK

a) -*

#. "lternator con7erts ,4C94!IC45 E!E+>@ to E5ECT+IC45 energ$.

43


99/103

4nswer in two or three sentenes:

a. ention the different types of "B! systes used in our ;epartent

*4C?4>E T@*E S*5IT T@*E =I!32= T@*E CE!T+45ISE3 4C

+. @hat is the function of go7ernor in a ;iesel engine

IT 6DHL"TDS TI!E 45TE+!4T2+S

C922SE T9E C2++ECT 4!S=E+:

1. "ong the following which is not a function of float rectifier

a) Stepping up (+) 6ectification (c) 6egulation

2. @hat is the +asic working principle of Ss

(a)"! to ;! con7ersion (+) Switching regulation (c) 6ectification

#. In ITI * A 92 " power plant (ulti rack type) the 7oltage adustent

range on float ode is

(a) % to - 7 (+) 9%3 to 9*-7 (c) %3 to 9*27

%. If a 1"< +attery is connected across a * " Dchange load, how long it cantake the Dchange load

(a) 2 hours (+) 2% hours (c) * hours

44


100/103

*. "t 2 ] depth of discharge what is the life epectancy of a A6L" +attery

(a)* charge discharge cycle,(+) % charge discharge cycle

(c) - charge discharge cycle.

-.The earth resistance earth electrode syste for electronic echanges should +e

(a) R .* (+) R 1 (c) R 2

'. In A6L" +attery what should +e the float 7oltage per cell

(a) 2.1*A (+) 2.2* A (c) 2.# A

3. In a ower plant, if the ains on +attery discharge alar glows the what

is thecause for the alar

(a) >attery failed and ains on(+) ains on(c) ower plant 7oltage is less than the +attery 7oltage

4.In SS which type of 7oltage con7ersion takes place in power con7erterstage

(a) ;! to ;! con7ersion (+) "! to ;! con7ersion (c) ;! to "!con7ersion

1. ;uring power stroke of a diesel engine which 7al7e reains closed

( a) Inlet 7al7e (+) out let 7al7e (c) >oth the 7al7es

5ill up the +lanks K

1. "ir conditioning is the siultaneous control of TDD6"T6D,

attery should ne7er discharged +elow %2 Aolt.

#. In A6L" +attery, I!6??6S HL"SS B ">S?6TIAD HL"SS

"T6IE ("H) is the separator used .

%. The DI and 65I are suppressed in a SS +y 5ILTD6I0H circuit.

1


101/103

*. In a lead acid +attery ;ILTD; SLS0L

"!8"HD T=D, SLIT T=D, @I0;?@ T=D, !D0T6"LISD; "B!

4. @hat is the function of go7ernor in a ;iesel engine

IT 6DHL"TDS TS0L to generate ST0 +ills fro the eter reading of the

indi7idual echanges is ______________________________

#. The package designed for anageent of the 7ehicles in >S0L is called_________________________

%. The package used in >S0L to a7oid the delay in pro7isioning of leased lines, all o7er

the country is NNNNNNNNNNNNNNN..

11


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*. The anageent inforation of >S0L is aintained as a separate data+ase using the

package called as _____________ .

8D=

1. package used in >S0L I (In7entory anageent ackage)2. Trichur >illing ackage#. 5leet anageent syste%. TA"6IT*. IS (anageent Inforation Syste)

1. ?ne of the software which is used for custoer relationship anageent in>S0L are (a) SS"0DT (+) ;?TS?5T (c) >oth (d) 0one of the choices

2. The software which deals with the anageent of redressal of pu+lic coplaintsis called (a) S0L6S (d) IS

#. roect estiates can +e prepared and sanctioned using the software called (a) H6S (+) >S0L6S (c) "T?S (d) 0one

%. software deals with the ser7ice records of the staff.(a) >S0L6S (+) H6S (c)


103/103

*.-. 0ae three Syste tools a7aila+le in windows'. 0ae four functions used in S Dcel with suita+le synta3. @hat are the 7arious types of !ell reference4. @hat are the steps in7ol7ed in aking a !hart in S Dcel

1.

Documents

Work Sheet for Comp Exam 2010I