GSM & RF Queations

1.      _______ is a first-generation cellular phone system.

a.      AMPS

b.      D-AMPS

c.       GSM

d.      None of the above

2.      __________ is a second-generation cellular phone system.

a.      AMPS

b.      D-AMPS

c.       GSM

d.      None of the above

3.      ____________ is a digital version of AMPS.

a.      AMPS

b.      D-AMPS

c.       IS-95

d.      None of the above

4.      ___________ is a second-generation cellular phone system used in Europe.

a.      AMPS

b.      D-AMPS

c.       IS-95

d.      None of the above

5.      ________ is a second-generation cellular phone system based on CDMA and DSSS.

a.      AMPS

b.      D-AMPS

c.       IS-95

d.      None of the above

6.      The __________ cellular phone system will provide universal personal communication.

a.      1^st generation

b.      2^nd generation

c.       3^rd generation

d.      None of the above

7.      In a ______ handoff, a mobile station only communicates with one base station.

a.      Hard

b.      Soft

c.       Medium

d.      None of the above

8.      In a ______ handoff, a mobile station can communicate with two base stations at the same time.

a.      Hard

b.      Soft

c.       Medium

d.      None of the above

9.      _______ is an analog cellular phone system using FDMA.

a.      AMPS

b.      D-AMPS

c.       GSM

d.      None of the above

10.  AMPS  operates in the _____ band.

a.      800-MHz

b.      900-MHz

c.       1800-MHz

d.      None of the above

11.  In AMPS, each band is divided into ______ channels.

a.      800

b.      900

c.       1000

d.      None of the above

12.  AMPS has a frequency reuse factor of _______.

a.      1

b.      3

c.       5

d.      7

13.  AMPS uses ______ to divide each 25-MHz band into channels.

a.      FDMA

b.      TDMA

c.       CDMA

d.      OFDMA

14.  D-AMPS uses ______ to divide each 25-MHz band into channels.

a.      FDMA

b.      TDMA

c.       CDMA

d.      Both a and b

15.  GSM allows a reuse factor of _______.

a.      1

b.      3

c.       5

d.      7

16.  GSM is a digital cellular phone system using ________.

a.      FDMA

b.      TDMA

c.       CDMA

d.      Both a and b

17.  IS-95 is based on ____________.

a.      CDMA

b.      FDMA

c.       TDMA

d.      All of the above

18.  IS-95 uses the _______ satellite system for synchronization.

a.      GPS

b.      Iridium

c.       Teledesic

d.      None of the above

19.  In an IS-95 system, the frequency-reuse factor is normally _____.

a.      1

b.      3

c.       5

d.      7

20.  If you have 5 MHz frequency band what will be the maximum number of channels as per GSM system?

a.      25

b.      35

c.       20

d.      24

21.  Which channel is used to transmit random access signals?

a.      BCCH

b.      CCCH

c.       SDCCH

d.      TCH

22.  The Value Range of Timing Advance (TA) in GSM is?

a.      0-31

b.      0-61

c.       0-63

d.      0-128

23.  In GSM carrier separation is 200KHz whereas in CDMA it is 5MHz (True/False)

24.  When MS is in dedicated mode, the information for non urgent procedure like radio link supervision measurement, transmit power control and timing advance data, is carried on

a.      SDCCH

b.      FACCH

c.       TCH

d.      SACCH

25.  Ciphering key Kc is never transmitted over radio interface. True/ False

26.  In up-link direction ARFCN (Absolute Radio Frequency Carrier Number) of 100 corresponds to frequency of (where 1 = ARFCN = 124)

a.      909.8 MHz

b.      910 MHz

c.       910.2 MHz

d.      910.5 MHz

27.  For intra-BSC normal Hand-over (not forced Hand-over) unit responsible for taking a decision that Hand-over is required

a.      BSC

b.      MSC

c.       VLR

d.      HLR

28.  In case inter-MSC Handover, MSC to MSC communication makes use of

a.      MAP-D Interface

b.      MAP-E Interface

c.       MAP-C Interface

d.      A-bis

29.  The maximum data rate supported by GSM system is

a.      4800bps

b.      2100bps

c.       6900bps

d.      7000bps

30.  In GSM the signaling protocol supported BTS and BSC is

a.      LAPD

b.      LAPDm

c.       SS7

d.      MAP

31.  Location Area is an area covered by ______.

a.      BTS

b.      BSC

c.       MSC/VLR

d.      None of the above

32.  Which Modulation Scheme is used in GSM and GPRS

a.      PSK

b.      GMSK

c.       ASK

d.      FSK

33.  What is the output power of BTS

a.      33DBm

b.      43DBm

c.       53DBm

d.      63DBm

34.  Which of these signaling is used for the PSTN network interface

a.      R2

b.      V5.2

c.       CCS No. 7

d.      All of the above

35.  Which of these channels is unidirectional?

a.      Broadcast

b.      Call setup

c.       SDCCH

d.      None of the above

36.  In GSM Handset interoperability is provided by _______and in CDMA it is _________.

a.      SIM, ESN

b.      SIM, RUIM

c.       RUIM, SIM

d.      ESN, SIM

37.  In GSM handoff is _________ while in CDMA it is ___________.

a.      Hard, soft

b.      Soft, hard

c.       Hard, hard

d.      Soft, soft

38.  LA update is done in GSM, what is important in GPRS

a.      LA update

b.      RA update

c.       TMSI

d.      None of the above

39.  The _________ is a database that contains information about the identity of mobile equipment that prevents calls from stolen, unauthorized, or defective mobile stations.

a.      EIR

b.      HLR

c.       AUC

d.      XME

40.  Which of these performs such functions as toll ticketing, network interfacing, common channel signaling?

a.      MSC

b.      VLR

c.       AUC

d.      HLR

41.  GSM is a digital system with an over-the-air bit rate of _________

a.      9.6 kbps

b.      56 kbps

c.       144 kbps

d.      270 kbps

42.  The separation between adjacent carrier frequencies is called In GSM, this is __________.

a.      100 KHz

b.      200 KHz

c.       225 KHz

d.      300 KHz

43.  The reuse distance increases with the cluster size, more precisely

a.      with the square root of the cluster size

b.      proportional to cluster size

c.       with the square of the cluster size

d.      with the logarithm of the cluster size

44.  What is the length of IMEI number ?

a.      16 Digits

b.      10 Digits

c.       15 Digits

d.      20 Digits

45.  The technique adopted to increase the system capacity and reduce co-chl interference is

a.      High power BTS

b.      By installing the Omni directional antenna

c.       Sectorization

d.      None of the above

46.  The remote and sparsely populated areas will be covered by

a.      Micro cell

b.      Macro cell

c.       Pico cell

d.      Umbrella cell

47.  The cell having the same number in the adjacent cluster using the same set of RF channels are termed as

a.      Adjacent cell

b.      Co channel cell

c.       Macro cell

d.      Selective Cell

48.  The terminal is under observation from the network for the possible problems. Under which list will this belong in EIR

a.      White list

b.      Grey list

c.       Black list

d.      Blue list

49.  The process of channel coding, Encryption, Multiplexing and modulation for Trans direction and reverse for reception are to be carried out by

a.      BTS

b.      BSC

c.       MSC

d.      MS

50.  A-interface is mainly used to transmit the following information.

a.      BSS management information

b.      Call processing

c.       Mobility management information

d.      All of the above