03816

TEST 1 (12)Uppgjord (även faktaansvarig om annan) - Prepared (also subject responsible if other) Nr - No.

KI/ERA/GD/UX Iwona Maksymowicz 038 16 - LZU 108 857 UenDokansv/Godk - Doc respons/Approved Kontr - Checked Datum - Date Rev File

KI/ERA/GD/UXC 03/14/00 G 03816.doc

GSM ADVANCED SYSTEM TECHNIQUE

TABLE OF CONTENTS

TEST 3TEST ANSWER FORM 11




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TEST

1. What information is checked by the EIR?

A) The subscription

B) The telephone

C) The subscriber category

2. What information about the position of the mobile in idle mode is stored inthe VLR?

A) Current location area

B) Current cell

C) Current MSC/VLR service area

3. What is the name of the node with the possibility to interrogate the HLRfor the location of the mobile station?

A) Gateway MSC

B) Locating MSC

C) Interrogating MSC

4. At mobile to mobile call setup (subscriber A calls subscriber B)

A) only the A subscriber’s HLR must be contacted

B) only the B subscriber’s HLR must be contacted

C) both the A and the B subscribers’ HLRs must be contacted

5. What is the area called that a mobile station is paged?

A) Paging Area

B) Location Area

C) BSC Service Area




6. Is the network informed if an MS changes cells in idle mode?

A) Yes, always

B) Yes, if it also changes the location area

C) No, never

7. Why is Periodic Registration performed?

A) To inform the network where the MS is

B) To inform the network that the MS is still in contact

with the network

C) To page the MS

8. What is the common name for RAND, Kc and SRES?

A) Mobile number group

B) Triplet

C) Triple group

9. What is a hyperframe?

A) a large data packet sent in the SS7 network

B) the longest time period in GSM

C) a cell planning concept

10. Which of the following identity numbers is dialed when making a call to anMS?

A) MSISDN

B) IMEI

C) IMSI




11. What logical channel does the MS use on the air when it sends its firstmessage to the network?

A) PCH

B) RACH

C) AGCH

12. How many bits of information does the MS send in its first message?

A) 114 bits

B) 57 bits

C) 8 bits

13. What type of system information message is mandatory to broadcast,when frequency hopping on SDCCH is used?

A) System information type 1

B) System information type 4

C) System information type 7

14. Which of the following logical channels is used to send systeminformation on the air interface to an active MS?

A) FACCH

B) SDCCH

C) SACCH

15. The IMEI check

A) is always done at call setup

B) is never done at call setup

C) can be done at call setup




16. In the Location Updating message the MS sends a LAI. It describes theLocation Area:

A) in which the subscriber has arrived

B) where the subscriber was last registered

C) in which the subscriber has a subscription

17. The Setup message is sent

A) only during call setup

B) only during location updating

C) during call setup and location updating

18. What information does the MS get in the Assignment Command?

A) information about the RACH it will use

B) information about the SDCCH it will use

C) information about the TCH it will use

19. Which of the following messages is piggybacked on the SABM message?

A) Channel Request

B) CM Service Request

C) Assign Command

20. What does the MS look for during an Idle frame?

A) Information, besides signal strength, about the neighboring cell thatthe MS needs to include in a measurement report

B) Signal strength on neighbors

C) The best cell to camp on, in idle mode




21. What is the maximum number of neighbors that can be included in onemeasurement report?

A) 6

B) 16

C) 32

22. The air interface layer 3 is split into three sub-layers. What are these sub-layers called?

A) CM/MM/RR

B) MSU/LSSU/FISU

C) ISUP/TUP/DUP

23. To have acknowledged mode on the air interface the following fields in aLAPDm frame are needed.

A) Flag bits

B) N(S) and N(R) counters

C) FSN, BSN, FIB and BIB fields

24. Channel coding is a layer 1 function used if we want to transmit

A) traffic (speech or data) only

B) speech only

C) traffic (speech or data) and signaling

25. What is the maximum speed with Ericsson’s implementation of HSCSD (ifno data compression is used)?

A) 57.6 kbps

B) 38,4 kbps

C) 76,8 kbps




26. Look at the sequence of authentication and encryption in the network.

A) authentication must be first

B) encryption must be first

C) the sequence is not important

27. In order to transfer both traffic and signaling for one frequency on the air,how many time slots on the PCM link on the Abis interface do we need?LAPD Concentration is used.

A) 2

B) 3

C) 8

28. The SID (Silence Description) frames travel on the Abis

A) Only when DTX is on

B) Only when DTX is off

C) Always

29. The C7/SS7 standard is an example for

A) Channel Associated Signaling

B) Common Channel Signaling

C) In-band signaling

30. An MTP message can be of one of three types:

A) CM/MM/RR

B) MSU/LSSU/FISU

C) ISUP/TUP/DUP




31. An STP (Signaling Transfer Point)

A) always changes the DPC of a signaling message

B) sometimes changes the DPC of a signaling message passing throughit

C) never changes the DPC of a signaling message

32. The length indicator field in the MTP message is

A) used to indicate the type of signal unit and sometimes the number ofoctets carried by the signal unit

B) always used to indicate the length of a MSU, a LSSU or a FISU

C) perform error correction

33. With SCCP you can route signaling messages:

A) only in one country

B) only within one world zone

C) in the whole world

34. SCCP is used in the network to exchange signaling messages:

A) between BSC and MSC/VLR only

B) between BSC and MSC/VLR and between nodes in the SwitchingSystem

C) between nodes in the Switching System only

35. The protocol used, on the A interface, for the messages that aretransmitted transparently through the BSC is called:

A) BSSMAP

B) DTAP

C) BTAP




36. The protocol used on the Ater interface is called:

A) BSSMAP

B) DTAP

C) BTAP

37. The initial MS messages

A) are opened by the BSC to add the LAI

B) are opened by the BSC to add the CGI

C) are opened by the BSC to add the BSIC

38. MAP can have many dialogues at the same time because TCAP

A) puts the messages in a queuing system and sends them one by one

B) gives different identities to different dialogues

C) puts messages from different dialogues on different Signaling Links

39. A Signaling Point (SP)

A) always has TCAP software

B) never has TCAP software

C) sometimes has TCAP software

40. The MAP message is pointed out by

A) transaction identity

B) Global Title

C) operation code




TEST ANSWER FORM

Name: ____________________________

Date: ______________________

If you do not know an answer, leave the square blank. You are not expectedto score high when taking the test before the course.

1 2 3 4 5 6 7 8 9 10ABC

11 12 13 14 15 16 17 18 19 20ABC

21 22 23 24 25 26 27 28 29 30ABC

31 32 33 34 35 36 37 38 39 40ABC

Test result: ________/40




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03816

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