Computer Science - Networking

21. 

Bus is

A. one or more conductors that some as a common connection for a related group of devices
B. a continuous frequency capable of being modulated or impressed with a second signal
C. the condition when two or more stations attempt to use the same channel at the same time
D. a collection of interconnected functional units that provides a data communications service among stations attached to the network
E. None of the above

Answer: Option A

Explanation:

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22. 

Which of the following medium is used for broadband local networks?

A. Coaxial cable
B. optic fiber
C. CATV
D. UTP
E. None of the above

Answer: Option C

Explanation:

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23. 

In cyclic redundancy checking what is the CRC?

A. the divisor
B. the quotient
C. the dividend
D. the remainder

Answer: Option D

Explanation:

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24. 

What is the maximum number of entries in the HOSTS file?

A. 8
B. 255
C. 500
D. Unlimited
E. None of the above

Answer: Option D

Explanation:

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25. 

The communication mode that supports data in both directions at the same time is

A. simplex
B. half-duplex
C. full-duplex
D. multiplex
E. None of the above

Answer: Option C

Explanation:

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