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Q.

A ________ is normally a computer that operates in all five layers of the Internet model or seven layers of OSI model.

A

repeater

B

bridge

C

router

D

gateway

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MCQ

1.

A ring SONET network can be _________

A

unidirectional

B

bidirectional

C

either (a) or (b)

D

neither (a) nor (b)

Discussion

MCQ

2.

In the _________ method, after the station finds the line idle, it sends its frame immediately. If the line is not idle, it continuously senses the line until it finds it idle.

A

nonpersistent

B

1-persistent

C

p-persistent

D

none of the above

Discussion

MCQ

3.

In SONET, for each frame, the bytes are transmitted __________

A

from left to the right, top to bottom

B

from right to the left, bottom to top

C

from left to the right, bottom to top

D

from right to the left, top to bottom

Discussion

MCQ

4.

At the data link layer, Frame Relay uses a protocol that supports _____control

A

flow

B

error

C

either (a) or (b)

D

neither (a) nor (b)

Discussion

MCQ

5.

In Selective Repeat ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the send window must be _____

A

15

B

16

C

31

D

1

Discussion

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