Data Communication and Networking Questions

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161.

A teleprocessing system may consist of

A

user systems

B

communications systems

C

computer center systems

D

All of the above

E

None of the above

Correct Answer: D

None.

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162.

If the ASCII character G is sent and the character D is received, what type of error is this?

A

single-bit

B

multiple-bit

C

burst

D

recoverable

E

None of the above

Correct Answer: C

None.

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163.

Which layer of OSI determines the interface of the system with the user?

A

Network

B

Application

C

Data-link

D

Session

E

None of the above

Correct Answer: B

None.

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164.

The transfer of data from a CPU to peripheral devices of a computer is achieved through

A

modems

B

computer ports

C

interfaces

D

buffer memory

E

None of the above

Correct Answer: B

None.

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165.

What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard?

A

4

B

2

C

6

D

3

E

None of the above

Correct Answer: D

None.

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166.

Many data communication networks have been established which provide a wealth of on-demand information services to people at home. What is the name of the system which provides an interactive, graphics-rich service that permits user to select what they want?

A

Teletex system

B

Fax system

C

Videotex system

D

Microwave system

E

None of the above

Correct Answer: C

None.

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167.

Which of the following statements is correct?

A

Terminal section of a synchronous modem contains the scrambler

B

Receiver section of a synchronous modem contains the scrambler

C

Transmission section of a synchronous modem contains the scrambler

D

Control section of a synchronous modem contains the scrambler

E

None of the above

Correct Answer: C

None.

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168.

Which of the following characteristic(s) is/are suited to the PSS applications?

A

bursty traffic and low communications intensity

B

widely dispersed terminals and access to international packets switched services

C

Multiple remote host or applications accessed by a single local access circuit terminal and circuit

D

All of the above

E

None of the above

Correct Answer: D

None.

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169.

Because the configuration infor-mation for a DHCP client is received dynamically, you must use which utility to read the current configuration to verify the settings?

A

PING

B

TRACERT

C

ARP

D

IPCONFIG

E

None of the above

Correct Answer: D

None.

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170.

Which of the following is separated by a subnet mask?

A

DHCP scopes

B

Network ID and host ID

C

Domains

D

Subnets

E

None of the above

Correct Answer: B

None.

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