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MCQ

Q.

An STS-3 frame is made of ______ rows

A

1

B

9

C

27

D

none of the above

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MCQ

1.

In Frame Relay, when a _____ is selected, the corresponding table entry is recorded for all switches by the administrator

A

PVC

B

SVC

C

either (a) or (b)

D

neither (a) nor (b)

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2.

In _______, collisions are avoided through the use of three strategies: the interframe space, the contention window, and acknowledgments.

A

CSMA/CA

B

CSMA/CD

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either (a) or (b)

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both (a) and (b)

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In the _________ protocol we avoid unnecessary transmission by sending only frames that are corrupted

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Stop-and-Wait ARQ

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Go-Back-N ARQ

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Selective-Repeat ARQ

D

none of the above

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A two-layer switch is a ______.

A

repeater

B

bridge

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router

D

none of the above

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5.

. In _______ methods, a station cannot send unless it has been authorized by other stations.

A

random access

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controlled access

C

channelization

D

none of the above

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