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MCQ

Q.

The CCITT Recommendation X.25 specifies three layers of communications:

A

application, presentation and session

B

Session, transport and network

C

physical datalink and network

D

datalink, network and transport

E

None of the above

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MCQ

1.

A technique used by codes to convert an analog signal into a digital bit stream is known as

A

Pulse code modulation

B

Pulse stretcher

C

Query processing

D

Queue management

E

None of the above

Discussion

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2.

If communication software can be called the "traffic cop" of a micro communication system, then what should the modem be called?

A

Park

B

Bridge

C

Interface

D

Link

E

None of the above

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3.

What does 240 translate to in binary?

A

11110000

B

11110

C

1111

D

11100000

E

None of the above

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4.

How many hosts are attached to each of the local area networks at your site?

A

128

B

254

C

256

D

64

E

None of the above

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5.

You are working with a network that has the network ID 192.168.10.0 and require nine subsets for your company and the maximum number of hosts. What subnet mask should you use?

A

255.255.255.192

B

255.255.255.224

C

255.255.255.240

D

255.255.255.248

E

255.255.255.252

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