LAN Switching and Wireless

371. In ATM, a virtual connection is defined by _________.

1. VPI
2. VCI
3. DLCI
4. a combination of (a) and (b)

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372. In ATM, connection between two endpoints is accomplished through _________.

1. TPs
2. VPs
3. VCs
4. all of the above

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373. In ATM, the _________ layer defines the transmission medium, bit transmission, encoding, and electrical-to-optical transformation.

1. physical
2. ATM layer
3. AAL
4. none of the above

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374. In ATM, the _________ layer provides routing, traffic management, switching, and multiplexing services.

1. physical
2. ATM
3. AAL
4. none of the above

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375. In ATM, the _________layer accepts transmissions from upper-layer services and maps them into ATM cells.

1. physical
2. ATM
3. AAL
4. none of the above

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376. In block coding, if k =2 and n =3, we have __________ invalid codewords.

1. 8
2. 4
3. 2
4. none of the above

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377. In block coding, if n = 5, the maximum Hamming distance between two codewords is __________.

1. 2
2. 3
3. 5
4. none of the above

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378. In Bluetooth, multiple _________ form a network called a _________.

1. scatternet; piconets
2. piconets: scatternet
3. piconets: bluenet
4. bluenet; scatternet

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379. In Bluetooth, the _________ layer is roughly equivalent to the physical layer of the Internet model.

1. radio
2. baseband
3. L2CAP
4. none of the above

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380. In Bluetooth, the _________ link is used when avoiding latency (delay in data delivery) is more important than integrity (error-free delivery).

1. SCO
2. ACL
3. ACO
4. SCL

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