Data Questions

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21.

The _______Protocol has both flow control and error control

A

Stop-and-Wait

B

Go-Back-N ARQ

C

Selective-Repeat ARQ

D

both (b) and (c)

Correct Answer: D

None.

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22.

In the _____ Protocol, the sender sends its frames one after another with no regard to the receiver

A

Stop-and-Wait

B

Simplest

C

Go-Back-N ARQ

D

Selective-Repeat ARQ

Correct Answer: B

None.

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23.

In the _____ Protocol, the sender sends one frame, stops until it receives confirmation from the receiver, and then sends the next frame.

A

Stop-and-Wait

B

Simplest

C

Go-Back-N ARQ

D

Selective-Repeat ARQ

Correct Answer: A

None.

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24.

In the _________Protocol, if no acknowledgment for a frame has arrived, we resend all outstanding frames.

A

Stop-and-Wait ARQ

B

Go-Back-N ARQ

C

Selective-Repeat ARQ

D

none of the above

Correct Answer: B

None.

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25.

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

A

Stop-and-Wait ARQ

B

Go-Back-N ARQ

C

Selective-Repeat ARQ

D

none of the above

Correct Answer: C

None.

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26.

Both Go-Back-N and Selective-Repeat Protocols use a _________

A

sliding frame

B

sliding window

C

sliding packet

D

none of the above

Correct Answer: B

None.

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27.

. In Go-Back-N 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

Correct Answer: C

None.

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28.

In Go-Back-N ARQ, if 5 is the number of bits for the sequence number, then the maximum size of the receive window must be _____

A

15

B

16

C

31

D

1

Correct Answer: D

None.

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29.

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

Correct Answer: B

None.

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30.

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

A

15

B

16

C

31

D

1

Correct Answer: B

None.

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