Data Questions

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111.

. In Ethernet addressing, if the least significant bit of the first byte is 0, the address is _________

A

unicast

B

multicast

C

broadcast

D

none of the above

Correct Answer: A

None.

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112.

In Ethernet addressing, if the least significant bit of the first byte is 1, the address is _________

A

unicast

B

multicast

C

broadcast

D

none of the above

Correct Answer: B

None.

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113.

In Ethernet addressing, if all the bits are 1s, the address is _________

A

unicast

B

multicast

C

broadcast

D

none of the above

Correct Answer: C

None.

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114.

_____defines a protocol data unit (PDU) that is somewhat similar to that of HDLC

A

MAC

B

LLC

C

LLU

D

none of the above

Correct Answer: B

None.

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115.

The purpose of the _______ is to provide flow and error control for the upper-layer protocols that actually demand these services

A

MAC

B

LLC

C

LLU

D

none of the above

Correct Answer: B

None.

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116.

In the Ethernet, the _______field is actually added at the physical layer and is not (formally) part of the frame.

A

CRC

B

preamble

C

address

D

none of the above

Correct Answer: B

None.

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117.

In the Ethernet frame, the _______ field contains error detection information

A

CRC

B

preamble

C

address

D

none of the above

Correct Answer: A

None.

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118.

Standard Ethernet (10-Mbps) uses _______ encoding

A

NRZ

B

AMI

C

Manchester

D

differential Manchester

Correct Answer: C

None.

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119.

. 100Base-T4 uses ________ line coding

A

NRZ

B

8B6T

C

MLT-3

D

Manchester

Correct Answer: B

None.

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120.

IEEE has defined the specifications for a wireless LAN, called _______, which covers the physical and data link layers.

A

IEEE 802.3

B

IEEE 802.5

C

IEEE 802.11

D

IEEE 802.2

Correct Answer: C

None.

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