Quiz on 2xG technology 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. 1st generation b. 2nd generation c. 3rd 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 IS-95 is based on ____________. a. FDMA b. a. a. a. CDMA d. 5 d. 900-MHz c. AMPS uses ______ to divide each 25-MHz band into channels. a. GPS b. Both a and b 15. Both a and b 17. 3 c. In AMPS. All of the above 18. a. CDMA d. 7 13. AMPS operates in the _____ band. GSM allows a reuse factor of _______. 1800-MHz d. each band is divided into ______ channels. None of the above 12. 7 16. TDMA c. FDMA b. a. FDMA b. TDMA d. 800-MHz b. 1000 d. Iridium c. 800 b. None of the above 19. None of the above 11. OFDMA 14. D-AMPS uses ______ to divide each 25-MHz band into channels. CDMA d. a. 5 d. IS-95 uses the _______ satellite system for synchronization. 900 c. 1 b. a. CDMA b. 3 c. TDMA c. a. 1 b. the frequency-reuse factor is normally _____.10. In an IS-95 system. 3 . Teledesic d. FDMA c. 1 b. GSM is a digital cellular phone system using ________. AMPS has a frequency reuse factor of _______. TDMA c. TCH The Value Range of Timing Advance (TA) in GSM is? a. 24. is carried on a. 910. 909. 21. MSC to MSC communication makes use of a. FACCH c. 910 MHz c. 5 d. 7 If you have 5 MHz frequency band what will be the maximum number of channels as per GSM system? a. 0-31 b. 24 Which channel is used to transmit random access signals? a. MAP-C Interface d. TCH d. MAP-E Interface c.2 MHz d. 20 d.8 MHz b. c. the information for non urgent procedure like radio link supervision measurement. BCCH b. 35 c. CCCH c. transmit power control and timing advance data. 29. A-bis The maximum data rate supported by GSM system is a. 0-63 d. 26. SACCH Ciphering key Kc is never transmitted over radio interface. MSC c. MAP-D Interface b. 0-128 In GSM carrier separation is 200KHz whereas in CDMA it is 5MHz (True/False) When MS is in dedicated mode. SDCCH b. SDCCH d. 22. 0-61 c. 23. HLR In case inter-MSC Handover.5 MHz For intra-BSC normal Hand-over (not forced Hand-over) unit responsible for taking a decision that Hand-over is required a.20. 28. True/ False In up-link direction ARFCN (Absolute Radio Frequency Carrier Number) of 100 corresponds to frequency of (where 1 = ARFCN = 124) a. 4800bps b. BSC b. VLR d. 25 b. 6900bps d. 2100bps c. 910. 25. 7000bps . 27. What is the maximum length of the Short PN Sequence when the PN Code is generated with a 15-stage Linear Shift Register? a. a. None of the above are correct 38. 33DBm b. PSK b. SS7 d. two types of Maximum-Length PN Sequences or PN Codes are used: The Short PN Code and the Long PN Code.Total number of "D" c. when corresponding bits from two sequences do not have the same parity it is called a Disagreement "D". With the Vocoder d. 53DBm d. What is the output power of BTS a. How are P/N codes generated? a. In CDMA. Correlation Value = Total number of "A" ÷ Total number of "D" d. In IS-95. It must appear random to a listener without prior knowledge of the code c.228. 1. 63DBm 34.384 chips b.228. BSC c. How is the Correlation value determined? a. 440 ms . Correlation Value = Total number of "A" + Total number of "D" 2 b.800 chips per second.800 chips d. None of the above 36. BTS b. LAPD b. None of the above 32. MAP 31. Location Area is an area covered by ______. ASK d. With the Encoder c. 16. LAPDm c. It must be deterministic b. MSC/VLR d. When corresponding bits from two sequences have the same parity (or match each other) it is called an Agreement "A". Correlation Value = Total number of "A" . The code must have a long period d. FSK 33. If the Long PN Code runs at a speed of 1. With the Data Burst Randomizer (DBR) 37. In GSM the signaling protocol supported BTS and BSC is a. 32. Which Modulation Scheme is used in GSM and GPRS a. what is the repetition cycle? a. With a Linear Shift Register b.768 chips c. GMSK c. All of the above 35.30.67 ms b. the pseudo-random code must have the following property a. 26. Likewise. 43DBm c. 7 d. Soft. voice mail. 41 . 43. None of the above Message center (MXE) handles _____________ cell broadcast. None of the above GSM. or voice distortion are almost non-existent in ______. a. being a relatively simpler technology. 2exp(N) -1 b. R2 b. 47. SIM In GSM handoff is _________ while in CDMA it is ___________. 42. GSM. e-mail . 40. voice mail b. 2esp(N) +1 d.4 days d. V5. c. whereas in ________. GSM. SIM. 46. and notification. CCS No. SIM d. SIM. Soft. CorDECT d. 3 . Hard. a. 1995 c. ESN b. and it became an international standard in _______ a. a. a. Assigned d. More c. ESN. 41.2 c. RUIM. soft b. Hard. soft Various factors such as echoes. 3esp(N) +1 Which of these signaling is used for the PSTN network interface a.39. All of the above Which of these channel is unidirectional? a. hard d. Same d. CDMA. 45. GSM c. hard c. Broadcast b. call dropping.42 days What is the maximum length of a P/N Sequence generated by an N-stage Linear Shift Register? a. CDMA b. uses________amount of cell phone battery than CDMA. RUIM c. 2001 In GSM Handset interoperability is provided by _______and in CDMA it is _________. 3exp(N) -1 c. 1991 b. a. 44. fax mail. Call setup c. 1998 d. None of the above CDMA or code division multiple access was developed by Qualcomm Inc. there is a high probability of errors. Less b. On the surface. 225 KHz d.. a. a.4. unauthorized. this is __________.9.. Why is handover request queuing possible? . d. short message service d. 50. more precisely a.3. XME The __________ protects network operators from different types of fraud found in today's cellular world.6.25. AUC d. b. a. 1. HLR GSM is a digital system with an over-the-air bit rate of _________ a. MSC b. None of the above The reuse distance increases with the cluster size.4. which is compatible with GSM A3/A8 authentication. 49. 9.11. or defective mobile stations. EIR c. 1. with the square root of the cluster size b. 51. 300 KHz The cluster size of the frequency reuse pattern of a hexagonal cellular system can only take on particular values. 56 kbps c.10. Namely a. with the square of the cluster size d.. CAVE is used for CDMA authentication. AUC d.4.. VLR c. AUC b. with the logarithm of the cluster size 55. c.16. queuing of handover requests seems to be a bad scheme and not possible since handover must not be noticed (delay sensitive) by the user. But it turns out that queuing handover request is possible. 1.3. common channel signaling? a. 52.48. and CAVE38 is used for iDEN authentication.(True/False) 56. c.. XME d. 144 kbps d.9. HLR c. 200 KHz c. All of the above The _________ is a database that contains information about the identity of mobile equipment that prevents calls from stolen. 100 KHz b. SMSC Which of these performs such functions as toll ticketing. EIR b. proportional to cluster size c. 270 kbps The separation between adjacent carrier frequencies is called In GSM. 53.6 kbps b.7. network interfacing.9... 54. c. 58. Therefore queuing handover request (although delay sensitive) is a better idea. Micro cell b. None of the above The remote and sparsely populated areas will be covered by a. Queuing is possible within this time. b. TATA Telecom c. 63. d. Under which list will this belong in EIR a. 15 Digits d. Selective Cell The terminal is under observation from the network for the possible problems. 1710-1785Mhz c. 144 kbps b. Co channel cell c. Adjacent cell b. By installing the Omni directional antenna c. BSNL What is the length of IMEI number ? a. 62. White list . Virgin Mobile d. Macro cell c.57. a. 59. 512 kbps The uplink frequency of P-GSM system is a. 236. 20 Digits What maximum speed you can get if you use EDGE technology for mobile internet ? a. High power BTS b. Umbrella cell The cell having the same number in the adjacent cluster using the same set of RF channels are termed as a. The alternative to queuing handover request is queuing new originating calls which is far more delay sensitive. 890-915 Mhz d. Reliance Communication b. 10 Digits c. There exist a time interval between the mobile phone reaching the handover threshold and the receiver threshold. Which Indian company was in race of Hutch Auction ? a. 60. Handover request can be made small packets. 61. Handover request taking up to 800ms would not be noticed by the user. Sectorisation d. 1850-1910Mhz b. None of the above The technique adopted to increase the system capacity and reduce co-chl interference is a. Pico cell d. 256 kbps c. Therefore the queue can be processed very quickly. 16 Digits b. Macro cell d.8 kbps d. 64. Shot code c. Blue list The process of channel coding. 70. (True/False) The Kc is the_________ciphering key that is used in the A5 encryption algorithm to encipher and decipher the data that is being transmitted on the Um interface. SRES and Kc. AUC c. BSS management information b. GMSK d.65.(True/False) The AuC may generate many sets of Triplets and send them to the requesting MSC/VLR. b. Mobility management information d.(True/False) . 32-bit The___algorithm computes a 32-bit Signed Response (SRES). FSK b. QPSK c. A3 b. BSC c. 60-bit b. a. A8 c. MS Which code is used in CDMA reverse channel a. Encryption. VLR The Ki is only stored on the SIM card and at the AuC. A5 d. Grey list c. a. 67. The Ki and RAND are inputted into the___ algorithm and the result is the 32-bit SRES. The___ algorithm resides on the SIM card and at the AuC. Black list d. This is in order to reduce the signaling overhead that would result if the MSC/VLR requested one set of triplets every time it wanted to authenticate the MS. 72. Multiplexing and modulation for Trans direction and reverse for reception are to be carried out by a. 71. 66. 64-ary Orthogonal code d. All of the above A-interface is mainly used to transmit the following information. 68. MSC d. 69. Call processing c. 74. MSC d. a. MSK Authentication triplets consist of RAND. EIR b. All of the above The RAND is a random 128-bit number that is generated by a. Long code b. 73. 70-bit d. All of the above Which modulation is used in GSM Technology? a. BTS b. 64-bit c. When a MS moves into a new location area it must do a location update which generates signal messaging between the BTS. When a MS reselects a new cell it does not need to notify the network unless that new cell is in a different Location Area. SS7 _____ multi-frequency tones for signaling. and HLR.(True/False) 81. None of the above 78. Allows b. Does not use 85. The Ki and RAND are fed into the COMP128 hash and the result is a 32-bit SRES and a 54-bit Kc. (True/False) 82. a. Are not 87. a. SCH 77. If a MS is located along the border of two location areas then it will see cells in both location areas. Are b. -48dB b. More than -48dB c. AGCH c. Does not allow 86. Whereas GGSN has IP on both sides. 0 (less than -110 dB) represents the weakest signal and 63 the strongest which has a. a. Cell reselection refers to the process of a MS choosing a new cell to monitor once it has already registered and is camped on a cell. SGSN is an element that understands Radio access on one side and IP on other side. COMP128 is a single keyed hash function that takes the place of the A3 and A8 algorithms and generates the SRES and Kc in a single function. BCCH d. Less than -48dB d. UDP b. It is important to distinguish that selection and reselection are done by the MS itself and not governed by the network. TCP c. There is no any kind of handover in GPRS (True/False) 80.75. _______________channel is used by a BTS to notify the MS of the assignment of an initial SDCCH for initial signaling. The signaling of SS7 features _____ signaling.(True/False) . GTP d. STPs and SCPs are not customarily deployed in pairs. Uses b. in-band b.(True/False) 79.(True/False) 76. SSPs _____ the packet switches of the SS7 network. a. RACH b. Associated signaling _____ for signaling to network elements to which there is no direct trunk connection. None of the above 83. BSC. MSC. out-of-band 84. RXLEV is a number from 0 to 63 that corresponds to a dBm value range. Which protocol is used between SGSN and GGSN? a. A MS along the borderline might reselect a cell in one location area and then a few minutes later reselect a cell in the other location area and continuously bounce back and forth between location areas generating too much signaling overhead and putting strain on the network. VLR. a. Hard b. What is the chip rate for IS-95? a. 2.88. B links b. ___________is considered when two cells (or sectors) of the same site are involved. PN Code b. Load sharing among SCPs d. if the two codes are identical? a. Walsh Code c. 90Mcps d. Soft c. FACH 93. 5MHz c. What is the spectrum used in WCDMA? a. Global title translation c. 128 c. 1.2288Mcps b. 120Mcps 96. 64 b. An REL is a message that indicates that switches at both ends have released the trunk. 1 c. DSCH d. 256 d. What will be the correlation of two codes. 10MHz d. Neither a nor b . B/D links d. Any of the above 89.1 d. 128MHz 94. a. a. Infinite 97. 512 92. Random Code d. 1. a. D links c.(True/False) 91. Links that connect non-mated STP pairs in different networks may be referred to as ______________. The SCCP supports __________________. BCH c. Routing to subsystems b. Which of these channel is optional? a.453Mcps c. The code that is used to spread the signal is called a a. 0 b. All of the above and other functions as well 90. The spreading factor of the DPCCH is a. RACH b. All of the above 95. Both a & b d. 1.25MHz b. Three d. In connected state.4. Which of this a downlink channel that carries control to UE known to locate in the given cell a. 1. Unlike GSM. What is full form of EV-DO? a.5. It transmits on the Access Channel b. Referring to the following picture of WiMAX OFDM symbol structure. in WCDMA there is ____________dedicated transport channel. Evolution-Data owned d.4.5. 256Kbps c.CDMA 2000 REV A 5. Evolution-Data Optimized b.4. Two c.1X EVDO REV A 4.1X EVDO a. 2. What is the theoretical speed of EVDO network Rev 0? a.3 d. 1.3 102.2. In idle state.3. One b.1. whenever it notices the Handoff Parameters suggest a change d. Any of the above 103. DCH a. Evolution-Data only c.4Kbps d. PCH d. 2. b.2. Four 99. IS 95A 2. FACH c. which part represents data subcarriers? a. Arrange the following in chronological order: 1.3. d. Both a & b 101.2. A B C D . it notices the serving sector is far from the sector where last updated c. 3.4. 1. BCH b.5 b. SCH 100.98.1 Mbps 104. TIA/EIA 95B 3. 144Kbps b.2 c. c. Access Terminal sends a Route Update Message to the system whenever: a. Modulation Demodulation Filtering Digital to Analog conversion . Mobile WiMAX supports channel bandwidths from 1. a.25 to 5 MHz 1. c. b.105. c. FFT (Fast Fourier Transform) is used in _________ process. b. d. d.25 to 9 MHz 1.25 to 16 MHz 1. 106.25 to 20 MHz In WiMAX Tx/Rx chain. a.