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Q.

Byte stuffing means adding a special byte to the data section of the frame when there is a character with the same pattern as the ______

A

header

B

trailer

C

flag

D

none of the above

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1.

Stop-and-Wait ARQ is a special case of Go-Back-N ARQ in which the size of the send window is 1.

A

2

B

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C

8

D

none of the above

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2.

In _______ methods, the stations consult one another to find which station has the right to send

A

random access

B

controlled access

C

channelization

D

none of the above

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3.

In the ________method, a station that has a frame to send senses the line. If the line is idle, it sends immediately. If the line is not idle, it waits a random amount of time and then senses the line again.

A

nonpersistent

B

1-persistent

C

p-persistent

D

none of the above

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The path overhead consists of ______ bytes

A

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B

6

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5.

In PPP, ________ is a simple authentication procedure with a two-step process:

A

NCP

B

LCP

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CHAP

D

PAP

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