Data Communication and Networking Questions

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281.

Which of the following is not a standard synchronous communication protocol?

A

SDLC

B

SMTP

C

SLIP

D

PAS

E

None of the above

Correct Answer: D

None.

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282.

The network layer, in reference to the OSI model, provide

A

data link procedures that provide for the exchange of data via frames that can be sent and received

B

the interface between the X.25 network and packet mode device

C

the virtual circuit interface to packet-switched service

D

All of the above

E

None of the above

Correct Answer: C

None.

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283.

In OSI network architecture, the routing is performed by

A

network layer

B

data link layer

C

transport layer

D

session layer

E

None of the above

Correct Answer: A

None.

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284.

Which of the following communications lines is best suited to interactive processing applications?

A

narrowband channels

B

simplex lines

C

full-duplex lines

D

mixed band channels

E

None of the above

Correct Answer: C

None.

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285.

What is the first octet range for a class B IP address?

A

128 - 255

B

1 - 127

C

192 - 223

D

128 - 191

E

127 - 191

Correct Answer: D

None.

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286.

The 32-bit internet address 10000000 00001010 00000010 00011110 will be written in dotted decimal notation as

A

148.20.2.30

B

164.100.9.61

C

210.20.2.64

D

128.10.2.30

E

None of the above

Correct Answer: D

None.

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287.

Which of the following items is not used in Local Area Networks (LANs)?

A

Computer

B

Modem

C

Printer

D

Cable

E

None of the above

Correct Answer: B

None.

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288.

Error detection at a data link level is achieved by

A

bit stuffing

B

cyclic redundancy codes

C

Hamming codes

D

equalization

E

None of the above

Correct Answer: B

None.

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289.

RS-232-G

A

is an interface between two data circuit terminating equipment as examplified by a local and remote modem

B

is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment

C

specifies only the mechanical characteristics of an interface by providing a 25-pin connector

D

requires only 7 pin out of 25 in order to transmit digital data over public telephone lines

E

None of the above

Correct Answer: B

None.

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290.

A subdivision of main storage created by operational software is referred to as a:

A

compartment

B

time-shared program

C

divided core

D

partition

E

None of the above

Correct Answer: D

None.

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