Data Communication and Networking Questions

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451.

You have been contracted to install a windows NT network in an office that is located in a strip mall. The office is located next to the power plant of the building, so a UPS (uninterruptible power supply) has already been installed. What type of cable should you use for the network cabling? Choose the best answer.

A

TI

B

UTP

C

Fiber-optic

D

PSTN

E

STP

Correct Answer: E

None.

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452.

Communication circuits that transmit data in both directions but not at the same time are operating in

A

a simplex mode

B

a half-duplex mode

C

a full-duplex mode

D

an asynchronous mode

E

None of the above

Correct Answer: B

None.

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453.

In a synchronous modem, the digital-to-analog converter transmits signal to the

A

equalizer

B

modulator

C

demodulator

D

terminal

E

None of the above

Correct Answer: A

None.

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454.

If the client receives an address from a DHCP server, what is the only information available in the Network Properties dialog box?

A

The IP address

B

The subnet address

C

That the client is receiving its address from DHCP

D

The default gateway

E

None of the above

Correct Answer: C

None.

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455.

An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is

A

X.75

B

X.25

C

X.400

D

X.21

E

None of the above

Correct Answer: A

None.

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456.

Which of the following TCP/IP protocol is used for transferring files from one machine to another?

A

RARP

B

ARP

C

TCP

D

FTP

E

None of the above

Correct Answer: D

None.

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457.

Which of the following is an example of bounded medium?

A

Coaxial cable

B

Wave guide

C

Fiber optic cable (d) All of the above

D

None of the above

Correct Answer: D

None.

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458.

Which transmission mode is used for data communication along telephone lines?

A

Parallel

B

Serial

C

Synchronous

D

Asynchronous

E

None of the above

Correct Answer: B

None.

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459.

Who invented the modem?

A

Wang Laboratories Ltd.

B

AT & T Information Systems, USA

C

Apple Computers Inc.

D

Digital Equipment Corpn.

E

None of the above

Correct Answer: B

None.

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460.

With an IP address starting at 200, you currently have 10 subnets. What subnet mask should you use to maximize the number of available hosts?

A

192

B

224

C

240

D

248

E

252

Correct Answer: C

None.

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