LAN Switching and Wireless

231. For a _________ channel, we need to use the Shannon capacity to find the maximum bit rate.

1. noisy
2. noiseless
3. bandpass
4. low-pass

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232. For Stop-and-Wait ARQ, for 10 data packets sent, _________ acknowledgments are needed.

1. exactly 10
2. less than 10
3. more than 10
4. none of the above

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233. Frame Relay has _________.

1. only the physical layer
2. only the data link
3. the physical and data link layers
4. the physical, data link, and network layers

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234. Frame Relay networks offer an option called __________________ that sends voice through the network.

1. VOFR
2. FRAD
3. MUX
4. none of the above

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235. Frame Relay provides _________.

1. PVCs
2. SVCs
3. either (a) or (b)
4. neither (a) nor (b)

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236. Frequency and period are _________.

1. inverse of each other
2. proportional to each other
3. the same
4. none of the above

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237. Frequency of failure and network recovery time after a failure are measures of the _________ of a network.

1. Performance
2. Reliability
3. Security
4. Feasibility

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238. FSM is an _________ technique.

1. analog
2. digital
3. either (a) or (b)
4. none of the above

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239. Gigabit Ethernet access methods include _________ mode.

1. half-duplex
2. full-duplex
3. both (a) and (b)
4. neither (a) nor (b)

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240. Gigabit Ethernet has a data rate of _________Mbps.

1. 10
2. 100
3. 1000
4. 10,000

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