LAN Switching and Wireless

241. Given an AM radio signal with a bandwidth of 10 KHz and the highest-frequency component at 705 KHz, what is the frequency of the carrier signal?

1. 700 KHz
2. 705 KHz
3. 710 KHz
4. Cannot be determined from given information

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242. Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is _________ that of A.

1. one-half
2. twice
3. the same as
4. indeterminate from

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243. GPS satellites are __________ satellites.

1. GEO
2. MEO
3. LEO
4. none of the above

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244. GSM allows a reuse factor of __________.

1. 1
2. 3
3. 5
4. 7

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245. GSM is a digital cellular phone system using __________.

1. FDMA
2. TDMA
3. CDMA
4. both (a) and (b)

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246. HDLC is an acronym for _________.

1. High-duplex line communication
2. High-level data link control
3. Half-duplex digital link combination
4. Host double-level circuit

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247. HDSL encodes data using _________.

1. 4B/5B
2. 2B1Q
3. 1B2Q
4. 6B/8T

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248. High-level Data Link Control (HDLC) is a _________ protocol for communication over point-to-point and multipoint links.

1. bit-oriented
2. byte-oriented
3. character-oriented
4. none of the above

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249. How many carrier frequencies are used in BASK?

1. 2
2. 1
3. 0
4. none of the above

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250. How many carrier frequencies are used in BFSK?

1. 2
2. 1
3. 0
4. none of the above

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