Data Questions

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251.

A ______ is the portion of the network between two multiplexers.

A

section

B

line

C

path

D

none of the above

Correct Answer: B

None.

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252.

A ______is the end-to-end portion of the network between two STS multiplexers

A

section

B

line

C

path

D

none of the above

Correct Answer: C

None.

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253.

The ______ layer is responsible for the movement of a signal from its optical source to its optical destination

A

section

B

line

C

path

D

photonic

Correct Answer: C

None.

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254.

The ____ layer is responsible for the movement of a signal across a physical line.

A

section

B

line

C

path

D

photonic

Correct Answer: B

None.

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255.

The ______ layer is responsible for the movement of a signal across a physical section

A

section

B

line

C

path

D

photonic

Correct Answer: A

None.

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256.

The _______ layer corresponds to the physical layer of the OSI model

A

section

B

line

C

path

D

photonic

Correct Answer: D

None.

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257.

An STS multiplexer is a ______ device

A

one-layer

B

two-layer

C

three-layer

D

four-layer

Correct Answer: D

None.

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258.

An add/drop multiplexer is a ______ device

A

one-layer

B

two-layer

C

three-layer

D

four-layer

Correct Answer: C

None.

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259.

. A regenerator is a ________ device

A

one-layer

B

two-layer

C

three-layer

D

four-layer

Correct Answer: B

None.

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260.

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

Correct Answer: A

None.

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