LAN Switching and Wireless

101. _________control in the data link layer is based on automatic repeat request, which is the retransmission of data.

1. Flow
2. Error
3. Transmission
4. none of the above

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102. _________framing uses two categories of protocols: character-oriented and bit-oriented.

1. Fixed-size
2. Variable-size
3. Standard
4. None of the above

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103. _________is the rate of change with respect to time.

1. Amplitude
2. Time
3. Frequency
4. Voltage

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104. 1000Base-SX, 1000Base-LX, and 1000Base-CX use _________ block coding and _________ line coding.

1. 4B/5B; NRZ
2. 8B/10B; NRZ
3. 4B/5B; MLT-3
4. 8B/10B; NRZ

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105. 1000Base-T uses _________ line coding.

1. 4D-PAM5
2. 8B6T
3. MLT-3
4. Manchester

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106. 100Base-FX uses _________ block coding and _________ line coding.

1. 4B/5B; NRZ-I
2. 8B/10B; NRZ
3. 4B/5B; MLT-3
4. 8B/10B; NRZ

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107. 100Base-T4 uses _________ line coding.

1. NRZ
2. 8B6T
3. MLT-3
4. Manchester

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108. 100Base-TX uses _________ block coding and _________ line coding.

1. 4B/5B; NRZ
2. 8B/10B; NRZ
3. 4B/5B; MLT-3
4. 8B/10B; NRZ

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109. A _________ ATM LAN combines features of a pure ATM LAN and a legacy ATM LAN.

1. pure
2. legacy
3. mixed architecture
4. none of the above

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110. A _________ can be used as a connecting device between two internetworks that use different models.

1. repeater
2. bridge
3. router
4. gateway

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