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Q.

Which of the following types of channels moves data relatively slowly?

A

wideband channel

B

voiceband channel

C

narrowband channel

D

broadband channel

E

None of the above

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MCQ

1.

A group of 2m - 1 routers are interconnected in a centralized binary tree, with router at each tree node. Router I communicate with router J by sending a message to the root of the tree. The root then sends the message back down to J. Then find the mean router-router path length.

A

2 (m - 2)

B

2 (2m - 1)

C

m - 1

D

(2m - l)/mJ

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2.

Which address is the loopback address?

A

0.0.0.1

B

127.0.0.0

C

127.0.0.1

D

255.255.255.255

E

None of the above

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3.

HOSTS file entries are limited to how many characters?

A

8

B

255

C

500

D

Unlimited

E

None of the above

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4.

Data communications monitors available on the software market include

A

ENVIRON/1

B

TOTAL

C

BPL

D

Telenet

E

None of the above

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5.

An example of an analog communication method is

A

laser beam

B

microwave

C

voice grade telephone line

D

All of the above

E

None of the above

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