computer networks Practice Questions Answers Test with Solutions & More Shortcuts

Question : 1

What is the function of an operating system?

a) Manages computer's resources very efficiently

b) Takes care of scheduling jobs for execution

c) Manages the flow of date and instructions

d) none of the above

e) All of the above

Question : 2 [IBPS PO, 2012]

________ 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

Question : 3

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

a) Two

b) Seven

c) Three

d) Six

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

Which is the first program run on a computer when the computer boots up?

a) Operating system

b) System software

c) System operations

d) All the above .

e) none of the above