8/13/2019 set1.doc

1/5

Q1. Why Modulation is needed?

Q2 What is the output of EXNOR and EXOR for input

combinations of ! and 1!1 ?

Q". E#plain ad$anta%es of pac&et s'itchin% o$er circuit s'itchin%?

Q( What is si%nalin%? What is )ommon channel si%nalin%? Which

type of si%nalin% is used in *+M?

Q, -o' lar%e is the *+M spectrum allocation in the band?

Q/ What is the duple# distance in *+M for 0)+ band?

Q. )hannel codin%

a is used for encryptin% user data

b to eliminate the problem of fadin% dips

c is the $oice codin% mechanism used in the transcoder

d is for error detectin% and correctin% purposes

Q3. What is the purpose of the -4R?

Q. Which of the follo'in% are 5edicated )hannels?

a 6))-! +)-! 7*)-

b +5))-! 8)-! +7))-

8/13/2019 set1.doc

2/5

c R7)-! 67))-! 8)-

d 9))-! +5))-! +7))-?

Q1 funtionin% of ss

Q11 What is the purpose of the trainin% se:uence and fla% bits in a

timeslot?

Q12 *i$en a do'nlin& broadcast carrier! ho' is the correspondin%

;plin& carrier found?

Q1" Which address is the 4R

d 7uthentication )entre

1/ What is the difference bet'een Mechanical 8ilt and Electrical

8ilt? What do you understand by -alf 0o'er 9eam'idth?

1 What is N++? -o' many components are there in N++! name

them.

8/13/2019 set1.doc

3/5

13 What is the benefit of *0R+?

a One does not pay for thin&in% 'hen ha$in% nternet

connection.

b 6aster data rates

c Operator utilises the resources

d 7ll of the abo$e

e None of the abo$e

1 f the incomin% si%nal stren%th in micro$olts is 1 micro>olts andthe noise le$el is , micro$olts! then the +i%nal to Noise Ratio in

decibels is %i$en by?

2 What are the +tatic and 5ynamic information@s in a +M card?

21 What is 6re:uency -oppin% in *+M and 'hat are its types?

22 E#plain nterference! its effects! its sources and its types?

2" 5efine physical and lo%ical channel?

2( What is a cell structure? What are the ad$anta%es and

disad$anta%es of it?

2, When 'as *+M launched and 'hat are the ad$anta%es of usin%

*+M?

8/13/2019 set1.doc

4/5

2/ What is ME? What for it is used? What is the numberin%

arran%ement of ME?

2 What is a 9;R+8? What are the different types of burst is *+M?

23 What do you mean by 8imin% 7d$ance? E#plain 'ith the help

of a dia%ram

2 What is a RE0E78ER? -o' it is used in 'ireless communication?

" What are 7AM;8- and E4E>78ON an%les? E#plain 'ith the help

of a dia%ram.

"1. 'hat is the function perform by site master? -o'?

"2. What is the purpose of the 6))-?

"". What is the purpose of the +)-?

"(. What is the purpose of the 9))-?

",. What is the purpose of the R7)-?

"/. What is the purpose of the 7*)-?

8/13/2019 set1.doc

5/5

". What is the purpose of the 0)-?

"3. types of mentinence ?'hy mentinence re:uired ?

" 8he location area is the area in 'hich a subscriber can be pa%ed

a 8rue

b 6alse

( -o' is the encryption session &ey %enerated?