computer networks set 5 Detailed Explanation And More Example

Question : 1

Encryption and decryption are functions of

a) Transport layer

b) None of these

c) Presentation layer

d) Allot the above

e) Session layer

Question : 2

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 : 3

An example of a telecommunications device is a

a) keyboard

b) mouse

c) printer

d) modem

e) None of these

Question : 4

A modem

a) translates analog signals from a computer into digital signals that can travel along conventional telephone lines.

b) translates digital signals from a computer into analog signals that, can travel along conventional telephone lines.

c) demodulates digital signals from a computer.

d) modulates signals from an analog telephone lines.

e) None of these

Question : 5

Which of the following types of channels moves data relatively slowly?

a) wideband channel

b) voice band channel

c) narrowband channel

d) broadband channel

e) None of these

Question : 6

DSL is an example of a(n) _____ connection.

a) network

b) wireless

c) slow

d) None of these

e) broadband