Data Communication and Networking Questions

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311.

Sending a file from your personal computer's primary memory or disk to another computer is called

A

uploading

B

downloading

C

logging on

D

hang on

E

None of the above

Correct Answer: A

None.

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312.

Business meeting and conferences can be held by linking distantly located people through a computer network. Not only the participants exchange information but are able to see each other. What is it called?

A

Telemeeting

B

Telemailing

C

Teleconferencing

D

Teletalking

E

None of the above

Correct Answer: C

None.

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313.

What frequency range is used for microwave communications, satellite and radar?

A

Low Frequency : 30 kHz to 300 kHz

B

Medium Frequency : 300 kHz to 3 MHz

C

Super High Frequency : 3000 MHz to 30000 MHz

D

Extremely High Frequency :30,000 MHz

E

None of the above

Correct Answer: D

None.

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314.

Which of the following statements is incorrect?

A

The difference between synchronous and asynchronous transmission is the clocking derived from the data in synchronous transmission

B

Half-duplex line is a communication line in which data can move in two directions, but not at the same time.

C

Teleprocessing combines telecommunications and DP techniques in online activities.

D

Batch processing is the preferred processing mode for telecommunication operations

E

None of the above

Correct Answer: D

None.

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315.

If the ASCII character H is sent and the character I is received, what type of error is this?

A

single-bit

B

multiple-bit

C

burst

D

recoverable

Correct Answer: A

None.

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316.

A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?

A

32 kbps

B

8 kbps

C

128 kbps

D

64 kbps.

E

None of the above

Correct Answer: B

None.

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317.

UDP is:

A

Not a part of the TCP/IP suite

B

Connection oriented and unreliable

C

Connection orientated and reliable

D

Connectionless and unreliable

E

None of the above

Correct Answer: D

None.

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318.

The interactive transmission of data within a time sharing system may be best suited to

A

simplex lines

B

half-duplex lines

C

full-duplex lines

D

biflex-line

E

None of the above

Correct Answer: B

None.

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319.

What OSI layer handles logical address to logical name resolution?

A

Transport

B

Physical

C

Presentation

D

Data Link

E

An alias for the computer name

Correct Answer: A

None.

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320.

The MAC (Media Access Control) address of the network card is used in both Ethernet and Token-Ring networks and is essential for communication. What does MAC provide?

A

A logical address that identifies the workstation

B

A physical address that is randomly assigned each time the computer is started

C

A physical address that is assigned by the manufacturer

D

The logical domain address for the workstation

E

An alias for the computer name

Correct Answer: C

None.

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