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Dr.G.R.Damodaran College of Science(Autonomous, affiliated to the Bharathiar University, recognized by the UGC)Re-accredited at the 'A' Grade Level by the NAAC and ISO
9001:2008 Certified
CRISL rated 'A' (TN) for MBA and MIB Programmes
I M.Sc(Information Technology) [2013 - 2015]
Semester I
Core: Mobile Communication - 163C
Multiple Choice Questions.
1. Mobile communication is the only solution due to the lack of an appropriate fixed communication ___________
A. infrastructure
B. intrastructure
C. interstructure
D. frustration
ANSWER: A
2. _________ refers to a user who has access to the same or similar telecommunication services at different places
A. Device portability
B. user Moblity
C. Portability
D. Acess Network
ANSWER: B
3. The __________is replaced by the transmission of electromagnetic waves through the air
A. wireless
B. wire
C. mobile
D. device
ANSWER: B
4. _________ mode is used for installing networks
A. Fixed and wired
B. Mobile and wired
C. Fixed and wireless
D. Mobile and wireless
ANSWER: C
5. The function of forwarding calls to the current user location is well known from the good old telephone system is called ________
A. follow-on service
B. Location aware service
C. privacy services
D. information services
ANSWER: A
6. As a very simple receiver and cannot send any messages, this messages are called as ___
A. sensor
B. embedded controls
C. pager
D. pda
ANSWER: C
7. Mobile communication is greatly influenced by the merging of ________and computer networks
A. wireless transmission
B. telecommunication
C. satellite system
D. wireless lan
ANSWER: B
8. The OSI reference model contains _______layers
A. 3
B. 5
C. 7
D. 9
ANSWER: C
9. The __________ is used in the reference model to establish an end-to-end connection
A. application layer
B. transport layer
C. network layer.
D. data link layer
ANSWER: B
10. The lower layer of the OSI reference model is _________
A. physical layer.
B. application layer.
C. data link layer.
D. network layer
ANSWER: A
11. Each transmitter typically called a base station covers a certain area called ________
A. blushes.
B. breath.
C. cell.
D. cluster
ANSWER: C
12. The mobile station has to perform a handover when changing from one to another, called as _________
A. handover needed.
B. infrastructure needed.
C. frequency planning.
D. robustness
ANSWER: A
13. Cells with more traffic are dynamically allotted more frequencies; this scheme is known as ________
A. BCA.
B. FCA.
C. DCA.
D. DECT
ANSWER: B
14. A dynamic channel allocation DCA scheme has been implemented in ______
A. TETRA.
B. DECT.
C. CDMA.
D. FCA
ANSWER: B
15. Cells are combined and called as ________
A. robustness.
B. antennas.
C. clusters.
D. breathe
ANSWER: C
16. To ________ interference further sectorization antennas can be used
A. reduce.
B. increase.
C. same level.
D. fixed.
ANSWER: A
17. Cellular systems using _________cells are commonly said to be breathe
A. FDM.
B. CDM.
C. SDM.
D. TDM
ANSWER: B
18. To avoid interference, different transmitters with each others interference range from ____________
A. TDM.
B. SDM.
C. CDM.
D. FDM
ANSWER: D
19. Telephones at home went wireless with the standard _________
A. cellular phones.
B. satellite.
C. cordless phones.
D. wireless lans
ANSWER: C
20. DECT works at a spectrum of 1880-1900 MHz with a range of ________
A. 100-500 m.
B. 100 -1000m.
C. 100-700m.
D. 0-100m.
ANSWER: A
21. The invention of the electronic _______ in 1906 by Lee Deforest and Robert von lieben
A. micro processor.
B. intragated circuit.
C. transistor.
D. vacuum tube
ANSWER: D
22. Alexander Graham Bells invention and marketing of telephone in _______ year
A. 1834.
B. 1874.
C. 1876.
D. 1843.
ANSWER: C
23. The 3rd generation of mobile communication gross data rates of _________
A. 45Mbps.
B. 54 Mbps.
C. 5 GHz.
D. 2.4 GHz
ANSWER: B
24. The medium access control belongs to __________layer
A. 1
B. 2
C. 3
D. 4
ANSWER: B
25. The ____________ is a server problem of wireless networks using CDM
A. near.
B. far.
C. near/far effect.
D. hidden and exposed
ANSWER: B
26. Space division multiple access (SDMA) is used for allocating a separate __________ to users in wireless networks
A. space.
B. time.
C. frequencies.
D. channels
ANSWER: A
27. The sender and receiver have to agree on a __________ pattern
A. channel.
B. hopping.
C. frequency.
D. multiplexing
ANSWER: B
28. A channel that allows for simultaneous transmission in both uplink and downlink directions called as ________________.
A. mobile station.
B. allocation channel.
C. duplex channel.
D. channels
ANSWER: C
29. The two directions, mobile station to base station and vice versa are so separated using different frequencies this scheme is called as ____________.
A. FDMA.
B. FDD.
C. Duplex channel.
D. SDMA.
ANSWER: B
30. All technologies that allocate certain time slots for communication called __________.
A. .SDMA.
B. FDMA.
C. TDMA.
D. CDMA.
ANSWER: C
31. If two or more stations access the medium at the __________ time collision occurs.
A. same time.
B. different time.
C. any time.
D. one time.
ANSWER: A
32. ________transmission can only start at the beginning of a time slot.
A. Classic aloha.
B. Slotted aloha.
C. Polling.
D. Reservation aloha
ANSWER: A
33. Carrier sense multiple access contains ___________ persistent
A. 2
B. 3
C. 4
D. 5
ANSWER: C
34. In ___________ all stations wishing to transmit access the medium at same time, as soon as it becomes idle
A. non persistent csma.
B. p- persistent csma.
C. l- persistent csma.
D. csma/ca
ANSWER: C
35. A number of slots form a ___________.
A. channel.
B. frame.
C. packet.
D. scheme
ANSWER: C
36. Demand assigned multiple access (DAMA) also called as __________.
A. classic aloha.
B. slotted aloha.
C. reservation aloha.
D. reservation tdma
ANSWER: B
37. __________ presents a simple scheme that solves the hidden terminal problem
A. MACA.
B. PRMA.
C. TDMA.
D. DAMA
ANSWER: A
38. _______is a strictly centralized scheme with one master station and several slave stations
A. Reservation.
B. Polling.
C. Hidden terminals.
D. Exposed terminals
ANSWER: B
39. _________ systems use exactly the codes to separate different users in code space
A. SDMA.
B. FDMA.
C. TDMA.
D. CDMA.
ANSWER: D
40. CDMA contains ________ codes
A. 1
B. 2
C. 3
D. 4
ANSWER: B
41. In ____________ almost everyone uses the digital GSM system with almost no analog system left
A. london.
B. japan
C. india.
D. europe
ANSWER: D
42. ___________ is the most successful digital mobile tele communication system in the world today
A. GPRS.
B. GSM.
C. CDMA 2000
D. CDMA 2001
ANSWER: B
43. GSM stands for ________
A. Group Special Mobile
B. Group special module.
C. Group standard mobile.
D. Group special mobile communication
ANSWER: A
44. A GSM system that has been introduced in several European countries for railroad system is __________.
A. GSM mail.
B. GSM 900.
C. GSM 1800.
D. GSM rail.
ANSWER: D
45. The versions comprise GSM at ________ MHz and also called as digital cellular system (DCS).
A. 900
B. 1800
C. 400
D. 1900
ANSWER: D
46. Both senders spread their signal using their ___________ as chipping sequence
A. key.
B. channel.
C. clusters.
D. spreading
ANSWER: A
47. The Barker code is used by __________ in CDMA.
A. orthogonal.
B. auto correction.
C. code multiplexing.
D. code space.
ANSWER: B
48. In CDMA, the equation C = _______________.
A. Ak + Bk.
B. As + Bs.
C. As + Ak.
D. Bs + Bk
ANSWER: B
49. _________ is a combination of CDMA and TDMA
A. SDMA.
B. SAMA.
C. CSMA.
D. MACA
ANSWER: B
50. Cell structured directed antennas of signal separation is for ___________.
A. SDMA.
B. TDMA.
C. FDMA.
D. CDMA
ANSWER: A
51. __________ is the segment of the market for mobile and wireless devices which growing most rapidly.
A. Telecommunication.
B. Wireless communication.
C. Digital cellular networks.
D. ISDN/PSTN network
ANSWER: C
52. GSM is typical second generation system, replacing the first generation ___________.
A. analog system.
B. digital system.
C. cellular system.
D. mobile system.
ANSWER: A
53. The primary goal of GSM was to provide a ___________.
A. telephone system.
B. cordless phone system.
C. mobile phone system.
D. rail road system
ANSWER: C
54. GSM has defined _________ different categories of services
A. 2
B. 3
C. 4
D. 5
ANSWER: B
55. In mobile services of GSM a mobile station is connected with GSM-PLMN through ___________ interface
A. Ur.
B. Us.
C. Un.
D. Um.
ANSWER: D
56. ____________ comprises all services that enable the transparent transmission of data between interface and network
A. Mobile service.
B. Bearer services.
C. Tele services.
D. Supplementary services
ANSWER: B
57. Tele services are application specific and may thus need _____________ layers of OSI/ISO reference model
A. 7
B. 5
C. 3
D. 2
ANSWER: A
58. Transparent bearer services use the function of the _________ layer.
A. transparent.
B. network.
C. data link.
D. physical
ANSWER: D
59. Non transparent bearer services use protocols of ____________ layers to implement error correction and flow control
A. physical & data link.
B. data link& network.
C. network & transport.
D. transport &application
ANSWER: A
60. In Tele Services, GSM mainly focuses on ___________ tele service
A. voice oriented.
B. data oriented.
C. voice & data oriented.
D. message oriented
ANSWER: A
61. A useful service for simple message transfer is the _________ which offers transmission rare up to 160 characters
A. MMS.
B. SMS.
C. EMS.
D. Fax.
ANSWER: B
62. ____________ offers a larger message size
A. MMS.
B. SMS.
C. EMS.
D. Fax.
ANSWER: B
63. ______________ offers various enhancements for the standard telephony service
A. Message service.
B. Supplementary service.
C. Tele services.
D. Bearer services
ANSWER: B
64. __________comprises all radio specific entities in GSM architecture
A. OSS.
B. NSS.
C. RSS.
D. BSS
ANSWER: C
65. The base transceiver station (BTS) is controlled by ___________
A. BSS.
B. BSC.
C. MSC.
D. MS.
ANSWER: B
66. An _________ user independent hard and software and of the subscriber identify module
A. Base station.
B. Radio station.
C. Network station.
D. Mobile station
ANSWER: D
67. ___________ is high-performance digital ISDN switches in GSM
A. MSC.
B. BSC.
C. BTS.
D. BSS
ANSWER: A
68. The ____________ is the most important database in a GSM system as it stores all user relevant information
A. Gateway MSC.
B. IWF.
C. HLR.
D. VLR
ANSWER: C
69. Which system occupies the third part of GSM system architecture?
A. OSS.
B. NSS.
C. BSS.
D. RSS.
ANSWER: A
70. The operation and maintenance centre uses the concept _________ management network as standard by the ITO-T.
A. wireless communication.
B. tele communication.
C. satellite.
D. network .
ANSWER: B
71. The most interesting interface in a GSM system is ____________.
A. Um.
B. Us.
C. Ur.
D. Ut
ANSWER: A
72. The____________ sequence in the middle of a slot is used is used to adapt the parameters of the receiver to the current path propagation in GSM frame
A. guard space.
B. user data.
C. training.
D. flag.
ANSWER: C
73. The first and last tree bits of a normal burst are all set of 0, that frame is named as __________.
A. guard space.
B. e-mail.
C. user data.
D. training.
ANSWER: B
74. An ____________ is used for the initial connection set up between MS and BTS in GSM TDMA frame
A. access burst.
B. dummy burst.
C. synchronization burst.
D. a synchronization burst.
ANSWER: A
75. How many groups of control channels have been defined, each again with sub channels
A. 1
B. 2
C. 3
D. 4
ANSWER: C
76. All information regarding connection set up between MS and BS is exchanged through the ______________.
A. BCCH.
B. FCCH.
C. CCCH.
D. DCCH.
ANSWER: C
77. The collection of multi frame is called as _____________.
A. frame.
B. super frame.
C. hyper frame.
D. sub frame.
ANSWER: B
78. TDMA frames containing data for the other logical channels are combined to a _____________
A. control multiframe.
B. traffic multiframe.
C. multiframe.
D. super frame.
ANSWER: A
79. Changing VLRs with uninterrupted availability of all services is also called as _______________.
A. signalling system.
B. pulse code modulation.
C. world wide web.
D. roaming.
ANSWER: D
80. The number consists of the country code then national destination code and the subscriber number is called as _____________.
A. MSI SDN.
B. ISDN.
C. MSIN.
D. IMSI.
ANSWER: A
81. GSM uses the 4 byte TMSI for ________________ subscriber identification.
A. international.
B. national.
C. state.
D. local.
ANSWER: D
82. Another temporary address that hides the identity and location of a subscriber is __________.
A. IMSI.
B. TMSI.
C. NSRN.
D. NSIN.
ANSWER: C
83. Cellular system require_________________ procedures, as single cells do not cover the whole service area.
A. hand over.
B. antennas.
C. call drop.
D. cells.
ANSWER: A
84. A handover could be required between two cells belonging to different MSES called as _______________
A. intra cell handover.
B. inter-cell, intra bsc handover.
C. inter-bsc, intra-msc handover.
D. inter msc handover.
ANSWER: D
85. The ____________ may grow due to interference the distance to the BTS may be too high.
A. error rate.
B. quality link.
C. load balancing.
D. signal level.
ANSWER: A
86. In security, Algorithm A5 is used for ____________________.
A. authentication.
B. encryption.
C. generation of a cipher key.
D. anonymity.
ANSWER: B
87. The basic GSM is based on ____________________ traffic channels.
A. connection oriented.
B. connection less.
C. packet switching.
D. circuit switching.
ANSWER: A
88. A straight forward improvement of GSM`s data transmission capabilities is ________.
A. IMSI.
B. SRES.
C. HSCSD.
D. GPRS.
ANSWER: C
89. An MS could use all eight slots within a TDMA frame to achieve an ___________
A. HSCD.
B. AIUR.
C. GPRS.
D. GGSN.
ANSWER: B
90. The ______________ is the internetworking unit between the GPRS network and external PDN.
A. HSCD.
B. GPRS.
C. GGSN.
D. SGSN.
ANSWER: C
91. To adapt to the different characteristics of the underlying networks, the _________ is used between and SGSN and MS.
A. MS .
B. BSS.
C. SSGP.
D. SNDCP.
ANSWER: D
92. The _______ at Um needed for GPRS does not require fundamental changes compared to standard GSM.
A. Radio interface.
B. UR interface.
C. Ug Interface.
D. UT interface.
ANSWER: A
93. A big different ce between _______ and _________ exists in terms of cell diameter and cell capacity.
A. ISDN & GSM.
B. PSTN & DECT.
C. DECT & GSM.
D. HSCD & GPRS.
ANSWER: B
94. A________ connect the local communication structure to the outside world and others in service through the interface D.
A. global network.
B. local network.
C. home data base.
D. visitor data base.
ANSWER: A
95. DECT works at a frequency range of ________ MHz offering 120 hu duplex channels.
A. 1770-1880.
B. 1990-2090.
C. 1880-1990 .
D. 1800-1900.
ANSWER: C
96. The fixed radio transmission (FT) and portable radio transmission (PT) inner layers one to ________ at the fixed network side 2 mobile network side.
A. two.
B. three.
C. four.
D. five.
ANSWER: B
97. To allow a common system throughout Europe, ETSI standardized the _________ system and this replace national system.
A. TETRA.
B. CDMA.
C. DECT.
D. TDMA.
ANSWER: A
98. In TETRA, _____ others packet data transmission, either connection oriented to connect to x-25.
A. voice transmission.
B. data transmission.
C. voice and data transmission.
D. packet data optimized.
ANSWER: D
99. ________________ Frequencies have been specified for TETRA which uses FDD and each channel has bandwidth of 25 KHz.
A. Single.
B. 12 Channels.
C. Several.
D. 24 Channels.
ANSWER: C
100. TETRA has been chosen by many government organizations in _________ & China.
A. Europe.
B. India.
C. Japan.
D. London.
ANSWER: A
101. The attractive force Fg of the earth due to gravity equals _______________
A. m.g (R/r) 3.
B. m.g. (R/r) 2.
C. M.g. (R/d).
D. m. g. (R/r).w2.
ANSWER: D
102. The centrifugal force ______ typing to pull the satellite away equals m.r. w2
A. Fg.
B. CF.
C. GF.
D. Fc.
ANSWER: D
103. ___________ represents the distance of the satellite to the centre of the earth.
A. m.
B. R.
C. r.
D. g
ANSWER: C
104. Satellites orbits around the ___________
A. sun.
B. moon.
C. star .
D. earth.
ANSWER: D
105. To keep the satellite in a stable circular orbit, the equation must hold __________ .
A. Fg = Fc.
B. Fg >Fc.
C. Fg < Fc.
D. Fg >= Fc.
ANSWER: A
106. The _________ is defined as the angle between the center of the satellite beam and the plane described by the satellite orbit.
A. plane of satellite orbit.
B. elevation angle.
C. perigee.
D. inclination angle.
ANSWER: D
107. The ___________ is defined as the angle between the center of the satellite beam and the plane essential to the earth surface.
A. inclination angle.
B. elevation angle.
C. foot print.
D. perigee.
ANSWER: B
108. GEO satellites have a distance of almost _____________ to the earth.
A. 36000km.
B. 3600 km.
C. 360 km.
D. 360000 km.
ANSWER: A
109. All TV and radio broadcast satellites are the examples of __________ .
A. GEO.
B. LEO.
C. MEO.
D. HEO.
ANSWER: A
110. The satellite cannot be used for small mobile phones. This is a disadvantage of _______
A. HEO.
B. MEO.
C. LEO.
D. GEO.
ANSWER: D
111. Each LEO satellite will only be visible from the earth for around __________ minutes.
A. 5.
B. 10.
C. 20.
D. 60.
ANSWER: D
112. In MEO, the satellites need _________ transmit power and special antennas for smaller hot prints.
A. lower.
B. medium.
C. higher.
D. same.
ANSWER: C
113. The cyclical repetition of data blocks sent through broadcast is often caused a _________.
A. broadcast disk.
B. skewed disk.
C. multi-disks.
D. flat disk.
ANSWER: A
114. ________ transmission power per antenna is orders of magnitude lower compared to traditional FM stations.
A. DVB.
B. DAB
C. Audio broadcasting .
D. Video broadcasting.
ANSWER: B
115. The _________ offers a transparent data transmission from the source to the destination with a fixed bit rate in a sub channel.
A. stream mode.
B. sub channel.
C. packet mode.
D. information mode.
ANSWER: A
116. The ____________ can contain program information, control information, still pictures for display on a small LCD, etc.
A. stream mode.
B. packet mode.
C. program associated data (pad).
D. synchronized channel.
ANSWER: A
117. __________ is transferred in MOT object consisting of a header cone, a header extension and a body.
A. MOT data.
B. MOT information.
C. MOT devices.
D. MOT formats.
ANSWER: A
118. In MOT objects structure, header cone held contains_________ bytes.
A. 5.
B. 7.
C. 8.
D. 9.
ANSWER: B
119. If some segments are more important than other, DAB can repeat the same segment more often. This scheme is called as ___________.
A. object repetition.
B. inter leaned object.
C. segment repetition.
D. header repetition.
ANSWER: C
120. _____________ contains status information about the uncast transmission and some Additional information of set-top boxes in DVB.
A. NIT .
B. SDT.
C. EIT .
D. TDT.
ANSWER: C
121. _____________ is a periodic transmission of data.
A. Data streaming.
B. Data pipe.
C. Data carousels.
D. Object carousels.
ANSWER: C
122. ____________ are typically characterized by very small cells, especially in densely populated areas.
A. 2G system.
B. 3G system.
C. 2.5G system.
D. 3.5G system.
ANSWER: C
123. To enable the conversance of digital broadcasting systems and mobile communications ECSI and active ____________ through GSM for DAB, DVB.
A. traffic channel.
B. control channel.
C. interaction channel.
D. sub channel.
ANSWER: C
124. ___________ technology uses diffuse light reflected at walls, furniture, etc..
A. Infra red.
B. Radio transmission .
C. Infrastructure.
D. Ad hoc network.
ANSWER: A
125. The Infra-red transmission are its low bandwidth compared to other _________ technologies.
A. WAN.
B. LAN.
C. MAN.
D. WWW.
ANSWER: B
126. __________ may occur if medium access of the wireless notes and the excess point is not coordinated in infrastructure.
A. Destroy.
B. Lost of data.
C. Collision.
D. Ideal.
ANSWER: C
127. In which network, each node can communicate directly with other nodes?
A. Infra red network.
B. Ad-hoc network.
C. LAN.
D. WAN.
ANSWER: B
128. Ad-hoc network might only have ______________ nodes with the capabilities of forwarding data.
A. all.
B. selected.
C. one .
D. one-ten.
ANSWER: B
129. The ____________ specifies the most famous families of WLAN, in which many products are available.
A. IEEE 802.11.
B. IEEE 803.11.
C. 804.11.
D. 805.11.
ANSWER: A
130. In IEEE standard, several nodes called stations that are connected to ____________
A. distribution system .
B. access nodes.
C. portal.
D. another station.
ANSWER: B
131. The stations and AP which are within the same radio converse from a__________
A. ESS.
B. BSS .
C. MSS.
D. MSE.
ANSWER: B
132. Everything develop within the group should be cheaper than other solution and allow for high-volume production. These criteria called as _____________.
A. compatibility.
B. distinct identity.
C. technical feasibility.
D. economic possibility.
ANSWER: D
133. Using wireless piconers, a mobile phone can be connected to a PDA or laptop in a simple way. This scenario is called _____________
A. connection to peripheral device.
B. support to ad-hoc networking.
C. bridging of networks.
D. market potential.
ANSWER: C
134. ________________ is a collection of Bluetooth devices which are synchronized to the same hopping sequence.
A. Master.
B. Piconet.
C. Slave.
D. Peripheral devices.
ANSWER: B
135. All users within one piconet have the same hopping sequence and share the same_______ channel.
A. 1 MHz.
B. 8 MHz.
C. 80 MHz.
D. 7 MHz.
ANSWER: A
136. ___________ protocol has link set-up and management between devices including security functions and parameter negotiation.
A. Baseband.
B. Link manager.
C. Local link control.
D. Adaptation protocol.
ANSWER: B
137. Audio applications may directly use the ________ layer after encoding the audio signals.
A. radio.
B. data link.
C. baseband.
D. physical.
ANSWER: C
138. In mobile IP, the problem of changing the IP address while still having a TCP connection open means connection will___________ .
A. sleep.
B. breaks.
C. still connected.
D. disconnected the network.
ANSWER: B
139. A________ is an end-system router that can change its point of attachment to the internet using mobile RP.
A. mobile node.
B. correspondent node.
C. foreign node.
D. home node
ANSWER: A
140. The_____________ is the subnet the MN belongs to with respect to its RP address.
A. home network.
B. foreign network.
C. foreign agent.
D. idone agent.
ANSWER: A
141. The_________ defines the current location of the MN human RP point view.
A. FA.
B. HA.
C. COA.
D. CN.
ANSWER: C
142. Foreign agent and home agent advertise their presence periodically using special ____________ messages.
A. Agent discovery.
B. agent advertisement.
C. agent solitation.
D. router discovery.
ANSWER: B
143. An agent advertisement,__________ levels for each address help a mode to choose the router that is the most eager one to get a new node.
A. type.
B. address.
C. lifetime.
D. preference.
ANSWER: D
144. An agent shows the number of advertisement sent since initialization in the sequence number.
A. one.
B. ten.
C. selected.
D. total.
ANSWER: D
145. Registration can be done in ______________ different way depending on the location of the COA.
A. 2.
B. 3.
C. 4.
D. 5.
ANSWER: B
146. The Home Agent (HA) sets up a ___________ containing the mobile nodes home IP address and the current COA.
A. date binding.
B. mobiling binding.
C. information binding.
D. binding of network.
ANSWER: B
147. A _____ which is conversed in a UDP packet, contains a type field set to 3 and a code indicating the result to the registration request.
A. registration reply.
B. registration accepted.
C. registration unsupported.
D. registration request.
ANSWER: A
148. A ____ establishes a virtual pipe for date packets between a inner entry and a inner exit point.
A. tunnel.
B. header.
C. data.
D. original ip.
ANSWER: A
149. ________ is a mechanism as taking a packet consisting of packet header an date and pushing it into the data part of a new packet.
A. Decapsulation.
B. Encapsulation.
C. Synchronous.
D. Asynchronous.
ANSWER: B
150. How may headers are present in the IP encapsulation structure?
A. 4.
B. 3.
C. 2.
D. 1.
ANSWER: C
151. Mandatory for mobile IP is IP-in-IP encapsulation as specified in __________.
A. RFC 2000.
B. RFC 2001.
C. RFC 2002.
D. RFC 2003.
ANSWER: D
152. The ____________ is used by any companies to hide internal resource and use only some globally available addresses.
A. network address transaction (nat).
B. firewall.
C. multicast
D. ttl.
ANSWER: A
153. The wireless application protocol started at the same time as _________ in Japan.
A. h-node.
B. i-mode.
C. r-mode.
D. j-mode.
ANSWER: B
154. End-to-end connection is established by ____________ .
A. data link.
B. network layer.
C. physical layer.
D. transport layer
ANSWER: D
155. ________ addresses the problem of location-dependent views on a file system.
A. Reintegration.
B. Transparency.
C. Weak consistency.
D. Strong consistency.
ANSWER: B
156. _______ consistency is achieved by atomic updates similar to database systems.
A. Weak.
B. Strong.
C. Reintegration.
D. Transparency.
ANSWER: B
157. ______ consistency implies certain periods of inconsistency that have to tolerated for performance reasons.
A. Weak.
B. Strong.
C. Reintegration.
D. Transparency.
ANSWER: A
158. The pre-processor of many distributed file systems that can be used for mobile operation is the ______ file system.
A. Andrew.
B. Barker.
C. NFS.
D. BTS.
ANSWER: A
159. _____ is the successor of AFS.
A. Hoarding.
B. Coda.
C. Little Work.
D. Ficus.
ANSWER: B
160. Ficus is a _____ file system.
A. distributed.
B. dynamic.
C. nts.
D. classical.
ANSWER: A
161. Ficus uses _____ protocols.
A. standard.
B. gossip.
C. handshake.
D. two-phase commit
ANSWER: B
162. The ______ is a stateless, lightweight, application level protocol for data transfer between servers and clients.
A. FTP.
B. HTTP.
C. SMTP.
D. SNMP.
ANSWER: B
163. The founder of WWW consortium is _____.
A. Bill Gates.
B. Tim Berners Lee.
C. Ken Thompson.
D. Steve Job.
ANSWER: B
164. N-Series are mobile models offered by ______ Company.
A. Nokia.
B. Sony.
C. LG.
D. Samsung.
ANSWER: A
165. Candy Bars are mobile models offered by ______ Company.
A. Nokia.
B. Sony.
C. LG.
D. Samsung.
ANSWER: C
166. WAP Forum was founded in the year _____.
A. 1996.
B. 1997.
C. 1998.
D. 1999.
ANSWER: B
167. The WAP forum together with the open mobile architecture forum and SyncML initiative formed the ______ alliance.
A. united.
B. open mobile.
C. bluetooth.
D. wi-fi.
ANSWER: B
168. WDP offers source and destination _____ used for multiplexing and demultiplexing of data.
A. sockets.
B. port numbers.
C. ports.
D. addresses.
ANSWER: B
169. WML Script is based on _______.
A. Vb Script.
B. Java Script.
C. Apple Script.
D. Action Script.
ANSWER: B
170. _______ provides a platform for developing new, mobility aware applications.
A. Rover.
B. Little work.
C. Ficus.
D. Coda.
ANSWER: A
171. The application layer of a network is ____________.
A. establishes, maintains and terminates virtual circuits.
B. consists of software being run on the computer connected to the network.
C. defines the users port into the network.
D. allows communication channel to be shared.
ANSWER: B
172. Devices on one network can communicate with devices on another network via a _______________.
A. file server.
B. printer server.
C. utility server.
D. gateway.
ANSWER: D
173. The most flexibility in how devices are wired together is provided by ____________.
A. bus network.
B. ring network.
C. star network.
D. t-switched network.
ANSWER: A
174. How many pairs of stations can simultaneously communicate on Ethernet LAN?
A. 1.
B. 2.
C. 3.
D. Multiple.
ANSWER: A
175. A modem that is attached to the telephone system by jamming the phones handset into two flexible receptacles in the coupler?
A. Gateway.
B. Time division multiplexer.
C. Acoustic coupler.
D. Bridge.
ANSWER: C
176. Which of the following allows devices on one network to communicate with devices on another network?
A. Multiplexer.
B. Gateway.
C. T-switch.
D. Modem.
ANSWER: B
177. Modulation is the process of _____________.
A. sending a file from one computer to another computer.
B. converts digital signals to analog signals.
C. converting analog signals to digital signals.
D. echoing every character that is received.
ANSWER: D
178. Which of the following is used for modulation and demodulation?
A. Modem.
B. Protocols.
C. Gateway.
D. Multiplexer.
ANSWER: A
179. The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is
used, the residual error rate for a communication line using 9-bit frames is approximately equal to ________.
A. 0.003.
B. 0.009.
C. 0.991.
D. 0.999.
ANSWER: B
180. Which layer of OSI model is responsible for creating and recognizing frame boundaries?
A. Physical layer.
B. Data link layer.
C. Transport layer.
D. Network layer.
ANSWER: B
181. Demodulation is the process of _______.
A. sending a file from one computer to another computer.
B. converting digital signals to analog signals.
C. converting analog signals to digital signals.
D. echoing every character that is received.
ANSWER: C
182. The stations and the AP which are within the same radio coverage form a ______.
A. BSC.
B. BSS.
C. MSC.
D. DSS.
ANSWER: D
183. Which among the following is a license free band?
A. ISM.
B. GSM.
C. CDMA.
D. AMPS.
ANSWER: A
184. ______ contains status information about the current transmission.
A. NIT.
B. SDT.
C. EIT.
D. TDT.
ANSWER: D
185. The X.25 standard specifies a ______________.
A. technique for start- stops data.
B. technique for dial access.
C. dte/dce interface.
D. data bit rate.
ANSWER: C
186. How many OSI layers are covered in the X.25 standard?
A. 3.
B. 2.
C. 7.
D. 6.
ANSWER: A
187. The third layer of OSI model is ___________.
A. physical layer.
B. data link layer.
C. network layer.
D. transport layer.
ANSWER: C
188. Which layer functions as a liaison between user support layers and network support layers?
A. Physical.
B. Network.
C. Transport.
D. Session.
ANSWER: C
189. Bluetooth applies ______ for the separation of piconets.
A. CDMA.
B. FH-CDMA.
C. FDMA.
D. SDMA.
ANSWER: B
190. In Congestion control, the ______________ notices the missing acknowledgement for the cost packet and assumes a packet loss due to congestion.
A. master.
B. slave.
C. sender.
D. receiver.
ANSWER: C
191. The behaviour TCP shows after the detection of congestion is called __________.
A. slow start.
B. fast retransmit.
C. fast recovery.
D. implications of mobility.
ANSWER: A
192. The sender always calculates a ___________ for a receiver.
A. congestion control.
B. congestion window.
C. congestion threshold.
D. slow start.
ANSWER: D
193. ___________ mechanism can improve the efficiency of TCP dramatically.
A. Fast recovery.
B. Fast retransmit.
C. Slow start.
D. Congestion window.
ANSWER: A
194. The fundamental design problem in TCP, an error control mechanism is ____________ for congestion control.
A. use.
B. misuse.
C. loss of data.
D. destroy.
ANSWER: B
195. ________________ concludes a congestion situation.
A. TCP.
B. IP.
C. PSTN.
D. ISDN
ANSWER: A
196. ___________ focuses the file system and www aspects.
A. Mobile transport.
B. Mobile IP.
C. Support for mobility.
D. SWA.
ANSWER: C
197. A ___________ is to support efficiency, transparent and consistent access to files.
A. File system
B. WAP.
C. WWW.
D. Mobile IP.
ANSWER: A
198. General problems are the limited resources on portable device and the ___________ bandwidth of the wireless access.
A. high.
B. low.
C. medium.
D. stable.
ANSWER: D
199. _________ file system does not expect disconnection, low bandwidth, and high latencies.
A. Standard.
B. Traditional.
C. Structure.
D. Caching.
ANSWER: A
200. ___________ addresses the problem of location-dependent views on a file system.
A. Efficiency.
B. Transparency.
C. Consistency.
D. Portable devices.
ANSWER: B
201. Which mode is used for installing networks in wireless communication device characteristics?
A. Fixed and wired.
B. Mobile and wired.
C. Fixed and wired.
D. Mobile and wireless.
ANSWER: C
202. In 1991, ETSI adopted the standard ________ for digital cordless telephony.
A. DECT.
B. TETRA.
C. CDMA.
D. GSM.
ANSWER: A
203. A _______ can only display short text messages and cannot send any messages.
A. mobile phones.
B. pocket computer.
C. laptop.
D. pager.
ANSWER: D
204. A simplified reference model applications on the end-systems communicate with other using the __________ services.
A. physical layer.
B. data link layer.
C. network layer.
D. transport layer.
ANSWER: C
205. In cellular systems, the total coverage areas are divided into________.
A. cells.
B. clusters.
C. channels.
D. antennas.
ANSWER: A
206. To reduce interference under certain traffic conditions _________ can be used.
A. Channel phase shift.
B. sectorized antennas.
C. less transmission power.
D. channel allocation.
ANSWER: B
207. Medium access control belongs to _________.
A. physical layer.
B. network layer.
C. data link layer.
D. transport layer.
ANSWER: C
208. A channel that allows for simultaneous transmission in both uplink and downlink directory is called as________.
A. duplex channel.
B. fixed channel.
C. borrowing channel.
D. frequency channel.
ANSWER: A
209. FDMA stands for____________.
A. Fixed Device Multiple Accesses.
B. Frequency Device Multiple Access.
C. Fixed Division Multiple Accesses.
D. Frequency Division Multiple Access.
ANSWER: D
210. Demand Assigned Multiple Access (DAMA) is also called as_______.
A. reservation aloha.
B. slotted aloha.
C. classical aloha.
D. spreaded aloha.
ANSWER: A
211. In CDMA, which standard sets zero as result to get a good code?
A. Auto correction.
B. Orthogonal.
C. Polling.
D. Motivation.
ANSWER: B
212. ________ is the most successful digital mobile communication system in the world today.
A. GPRS.
B. HSCSD.
C. GSM.
D. SMS
ANSWER: C
213. In GSM, which services uses between the Data link layer & network layer?
A. Transparent bearer services.
B. Non Transparent bearer services.
C. Asynchronous.
D. Synchronous.
ANSWER: B
214. In teleservices, the GSM mainly focuses on _______ teleservices.
A. voice-oriented tele services.
B. data oriented tele services.
C. message- oriented tele services.
D. fax- oriented tele services.
ANSWER: A
215. In GSM, the system architecture consists of_______ subsystems.
A. 2.
B. 3.
C. 4.
D. 5
ANSWER: B
216. The base transceiver station (BTS) is controlled & managed by _________ Controller.
A. BJS.
B. MSC.
C. BSC.
D. RSS.
ANSWER: C
217. The combinations of 26 multi frames with 51 frames to form a________.
A. super frame.
B. hyper frame.
C. traffic multi frame.
D. control multi frame.
ANSWER: A
218. The number consists of the country code (CC), the national destination Code (NDC) and subscriber number (SN) is called as __________.
A. MSRN.
B. IMSI.
C. TMSI.
D. MSISDN.
ANSWER: D
219. Cellular systems require_______ procedures as single cells do not cover the whole service data.
A. hand over.
B. localization.
C. calling.
D. security.
ANSWER: A
220. In security algorithm a3 is used for _________.
A. generation to cipher key.
B. encryption.
C. authentication.
D. individual authentication key.
ANSWER: C
221. A straight forward improvement of GSMs data transmission capabilities is ________.
A. HSCSD.
B. GPRS.
C. AIUR.
D. GSM.
ANSWER: A
222. The_______ is the interworking unit between the GPRS network & External packet data networks (PDN).
A. SGSN.
B. SNDCD.
C. BSSGP.
D. GGSN.
ANSWER: D
223. _________ in the DECT context other local telecommunication services.
A. Local Network.
B. Global Network. .
C. Wide Network.
D. Layer Network
ANSWER: A
224. _________ standard often circuit-switched voice & data transmission in TETRA.
A. PDO.
B. V+D.
C. SWMI.
D. Frame structure.
ANSWER: B
225. DECT replaces order_______ phone system.
A. analog cordless.
B. digital cordless.
C. transmit cordless.
D. analog to digital.
ANSWER: A
226. Which database is used to set the home information in the DECT system architecture?
A. HDB.
B. VDB.
C. HLR.
D. VLR.
ANSWER: A
227. The _______ is defined as the angle between the equivalent plane and plane described by the satellite orbit.
A. elevation angle.
B. inclination angle.
C. perigee.
D. acceleration of gravity
ANSWER: B
228. The _______ is defined as the angle between the centre of the satellite beam & the plane tangential to the earths surface.
A. elevation angle.
B. inclination angle.
C. perigee.
D. acceleration of gravity.
ANSWER: A
229. The cyclical repetition of data blocks sent via broadcast is often called as _________.
A. multi disk.
B. hard disk.
C. broadcast disk.
D. skewed disk.
ANSWER: C
230. The stream mode offers a transparent data transmission from the source to the destination with a fixed bit rate in a _______.
A. sub channel.
B. traffic channel.
C. control channel.
D. duplex channel.
ANSWER: A
231. The _________ marks the start of a frame and consists of a null symbol and a phase reference symbol to synchronize the receiver.
A. fast information channel.
B. synchronization channel.
C. main service channel.
D. sub channel.
ANSWER: B
232. __________ contains status information about the current transmission and some additional information for set-top boxes.
A. NIT.
B. SDT.
C. EIT.
D. TDT.
ANSWER: B
233. _____________ is a periodic transmission of data.
A. Data pipe.
B. Data streaming.
C. Data carousels.
D. Object carousels.
ANSWER: C
234. To enable the convergence of digital broad banding system and mobile Communication system ETSI and ETSI define __________ through GSM for DAB and DVB.
A. synchronization channel.
B. fast information channel.
C. main service channel.
D. interaction channel.
ANSWER: D
235. An access point for the first user, adding additional user to a wireless network will not increase the ________.
A. cost.
B. design.
C. planning.
D. flexibility.
ANSWER: A
236. ____________ technology uses diffuse light reflected at wall, furniture, etc. or directed light if a line of sight between sender and receiver.
A. Radio transmission.
B. Infra red.
C. Infrastructure.
D. Ad hoc network.
ANSWER: B
237. Mandatory for mobile IP is __________ as specified in RFC 2003.
A. IP in IP encapsulation.
B. IP in IP decapsulation.
C. Minimal encapsulation.
D. Heretic routing encapsulation.
ANSWER: A
238. Maximum power is 100mw and minimum power is 1mw in Radio layer is in ________.
A. power 1.
B. power 2.
C. power 3.
D. power 4.
ANSWER: A
239. The ___________ specifies the most famous family of WLANs in which many produce are available.
A. IEEE 805.11.
B. IEEE 804.11.
C. IEEE 803.11.
D. IEEE 802.11.
ANSWER: D
240. The primary goal of the standard was the specification of a simple and robust WLAN which offers time-bounded and ____________ services.
A. synchronous.
B. asynchronous.
C. transparent.
D. non-transparent.
ANSWER: B
241. The distribution system connects the wireless network with _________.
A. portal.
B. fixed portable.
C. portable radio transmission.
D. portable application.
ANSWER: A
242. In IEEE 802.11 system architecture, stations are nodes called as ________.
A. channel.
B. stations.
C. clusters.
D. pages.
ANSWER: B
243. _________ wireless network do not need any infrastructures to work.
A. Radio transmission.
B. Infra red.
C. Infrastructure.
D. Ad-hoc network.
ANSWER: D
244. The foreign agent and home agent advertise their presence periodically using special _______ message.
A. agent advertisement.
B. agent solicitation.
C. registration request.
D. mobility binding.
ANSWER: A
245. The first field ________ is set to 1 for registration request.
A. interface.
B. type.
C. lifetime.
D. length.
ANSWER: B
246. _________ is the mechanism of taking a packet consisting of packet header & data & putting it into the data part of a new packet.
A. Encapsulation.
B. Decapsulation.
C. Minimal encapsulation.
D. Generic routing encapsulation.
ANSWER: A
247. __________ wireless network communication typically takes place between the wireless nodes & access point.
A. Radio transmission.
B. Infra red.
C. Infrastructure.
D. ad-hoc network.
ANSWER: C
248. If __________ requested, a node returns the acknowledgement after receiving a binding update message.
A. Binding request.
B. Binding acknowledgement.
C. Binding update.
D. Binding warning.
ANSWER: B
249. ________ routing is an enhancement to distance vector routing for ad-hoc network.
A. DSDV.
B. HSCSD.
C. AODV.
D. DVB.
ANSWER: A
250. __________ tries to avoid the problem by setting up a path between sender & receiver only if a communication is waiting.
A. Reactive protocols.
B. Active protocols.
C. Dynamic source routing.
D. Clustered gateway switching routing.
ANSWER: A
Staff Name
SRIVIDHYA.R.
