Networking – Section 5

16. A distributed data processing configuration in which all activities must pass through a centrally located computer is called a:

A. ring network
B. spider network
C. hierarchical network
D. data control network
E. None of the above

Correct Answer: B. spider network

17. The size or magnitude of a voltage or current waveform is

A. Amplitude
B. Aloha
C. Angle Modulation
D. Attenuation
E. None of the above

Correct Answer: A. Amplitude

18. Which of the following network access standard is used for connecting stations to a circuit-switched network?

A. X.3
B. X.21
C. X.25
D. X.75
E. None of the above

Correct Answer: B. X.21

19. Which of the following is not a transmission medium?

A. telephone lines
B. coaxial cable
C. modem
D. microwave systems
E. satellite systems

Correct Answer: C. modem

20. Which of the following statement is incorrect?

A. Gateways are assumed to know correct routes; hosts begin with minimal routing information and learn new routes from gateways.
B. Layered protocols are designed so that layer n at the destination receives exactly the same object sent by layer n at the source.
C. Application programs as well as all protocol software from the Internet layer upward use only IP addresses; the network interface layer handles physical addresses.
D. All of the above
E. None of the above

Correct Answer: D. All of the above

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