computer networks set 5 Detailed Explanation And More Example

Question : 1

For separating channels in FDM, it is necessary to use

a) Differentiation

b) Band pass filters

c) Time slots

d) All of the above

e) None of these

Question : 2

Which of the following performs modulation and demodulation?

a) modem

b) satellite

c) coaxial cable

d) fiber optics

e) none of the above

Question : 3

A modem is connected to

a) a telephone line

b) a keyboard

c) a printer

d) a monitor

e) a scanner

Question : 4

Computers connected to a LAN (Local Area Network) can __________.

a) run faster

b) go on line

c) share information and/or share peripheral equipment

d) E-mail

e) None of these

Question : 5

Encryption and decryption are functions of

a) Transport layer

b) None of these

c) Presentation layer

d) Allot the above

e) Session layer

Question : 6

An example of a medium speed, switched communications service is

a) series 1000

b) data phone 50

c) All of the above

d) ODD

e) none of the above