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MCQ

Q.

An ______ signal is the optical modulation of an STS-n (or STM-n) signal.

A

OC-n

B

TDM-n

C

FDM-n

D

none of the above

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MCQ

1.

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

Discussion

MCQ

2.

In the ________ method, a station needs to make a reservation before sending data. Time is divided into intervals.

A

reservation

B

polling

C

token passing

D

none of the above

Discussion

MCQ

3.

The IEEE 802.3 Standard defines _________ CSMA/CD as the access method for first-generation 10-Mbps Ethernet.

A

1-persistent

B

p-persistent

C

non-persistent

D

none of the above

Discussion

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4.

In a(n) _____ configuration, the stations are automatically connected or disconnected from a VLAN using criteria defined by the administrator

A

manual

B

automatic

C

semiautomatic

D

none of the above

Discussion

MCQ

5.

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

Discussion

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