computer networks set 2 Detailed Explanation And More Example

Question : 1

A characteristic of a file server is which of the following ?

a) Acts as a fat client and is limited to one PC

b) Manages file operations and is limited to one PC

c) Acts as a fat client and is shared on a network

d) Manages file operations and is shared on a network

e) None of these

Question : 2

Most data communications involving telegraph lines use:

a) simplex lines

b) wideband channel

c) dialed service

d) narrowband channel

Question : 3

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

a) demodulator

b) modulator

c) equalizer

d) terminal

e) none of above

Question : 4

Which of the following is not a disadvantage of wireless LAN?

a) Slower data transmission

b) higher error rate

c) interference of transmissions from different computers

d) All of the above

e) None of these

Question : 5

How many OSI layers are covered in the X.25 standard?

a) Two

b) Seven

c) Three

d) Six

e) None of above

Question : 6

________ is a technique that is used to send more than one call over a single line.

a) Digital transmission

b) Infrared transmission

c) Digitizing

d) Streaming

e) Multiplexing