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Wireless & Mobile NetworksI nstructor: Ahmar Rashid

Quiz 3Maximum Marks: 30

Name__________________________Regn.No.__________________Faculty________________

1- Which of the following is not a valid GMS network?GSM 9000

2- Which of the following multiplexing schemes are used in GSM ?

SDM, FDM & TDM(all of these)

3- UTRA TDD / TD-CDMA is a 3G cellular technology. Which of the following cellular

technologies did not merge/evolve into UTRA TDD / TD-CDMA?

cdmaOne

4- In GSM 900, down-link direction ARFCN (Absolute Radio Frequency Carrier Number)of 50 corresponds to which frequency band? ( 1 ARFCN 124)

945.2 - 945.4 MHz ( (50 /124) 24.8 + 935 = 945 )

Hint: (GSM 900 fuplinkrange is 890.2 to 915 MHz and there is a buffer of 20.2 MHZ between theupper boundary of total uplink frequency band and the lower boundary of total downlink

frequency band )

5- Which of the following devices stores the authentication parameters for mobile

terminals and encryption of user data on the air interface?

AUC

6- Which of the following is true in GSM architecture?

typically, there is one VLR per MSC area

7- Which of the following is true for theGSM specification?

the MSC and VLR may or may not reside on the same switch

8- Which of the following IDs is assigned to an MS when it passes the authentication phase

for the first time under the MSC (powered on or location update)?

TMSI

9- Which of the following IDs is the subscriberspermanent phone number ?

MSISDN

10- MSRN, a temporary number used to route the call has significance in case ofMobile to Mobile Call

Mobile Terminated Call (PSTN to Mobile)

The answer was: 1 and 3

http://en.wikipedia.org/wiki/Global_System_for_Mobile_Communicationshttp://en.wikipedia.org/wiki/Global_System_for_Mobile_Communications

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11- SDCCHis a _______________channel used for signaling in higher layers

full duplex

12- IMSI is stored in

HLR, VLR & mobile SIM

13- IMEI is stored in _________

EIR

14- Which of the following is correct regarding an MS in a GSM system?

communication between MTand TEtakes place over a bus using ATcommands, which

serves as a TA

( Normenclature: MT: Mobile Terminal TA: Terminal Adapter TE: Terminal

Equipment )

15- Which of the following is not a function of EIR?

it stores permanent data about subscribers, including a subscriber's service profile and location

information

16- What are the components of OSS (Operation Subsystem) of GSM?

AUC, EIR and OMC

17- Which of the following is not a function of MSC?

channel coding and decoding

18- Which of the following is a function of BTS as well as BSC ?

frequency hopping

19- A is a GSM Standard Interface between ________ and________

i.MS and BTSii.BTS and BSC

iii.BSC and MSCiv.MSC and MSCv.RSS and NSS

(iii), (iv) & (v) are true

20- Abisis a GSM Standard Interface between ________ and________

i.MS and BTSii.BTS and BSC

iii.BSC and MSCiv.MSC and MSC

only (ii) is true