Computer Networks

301. GSM 900 has ____________ physical half duplex channels

1. 125
2. 124
3. 248
4. 247

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302. GSM 900 operates on a frequency range of ____________ for downlink

1. 935-960MHz
2. 940-970MHz
3. 945-950MHz
4. 925-960MHz

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303. GSM 900 operates on a frequency range of ____________ for uplink

1. 890-910MHz
2. 890-915MHz.
3. 890-901MHz
4. 890-911MHz

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304. GSM call may be classified into two types namely

1. MTC(Mobile Terminated Call)
2. MOC(Mobile Originated Call)
3. Both a & b
4. None of these

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305. GSM consists of many subsystems, such as the

1. Mobile station(MS)
2. Base station subsystem(BSS)
3. Network and Switching subsystem(NSS)
4. Operation subsystem(OSS)
5. All of these

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306. GSM has three functional layers

1. Physical layer
2. Data link layer
3. Layer three in correspondence with OSI model
4. All of these

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307. GSM is already mentioned that the duration of one TDMA frame is

1. 4.516ms
2. 4.615ms
3. 4.156ms
4. 4.165ms

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308. GSM network checks the ____________ of a mobile device through EIR database

1. Type
2. Serial number
3. Both a & b
4. None of these

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309. GSM provides only ____________ data connection

1. 8.6kbps
2. 9.6kbps
3. 7.6kbps
4. 8.8kbps

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310. GSM specifies a multiplexing scheme to integrate several frames where a periodic pattern of 26 slots occurs in all TDM frames with a TCH , the combination of these frames are called

1. Multiframe
2. Traffic-multiframe
3. Multiprogramming
4. None of these

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