Operating System MCQs

Question 1

Feed back queue

Accepted Answer

dispatch tasks according to execution characteristics

Answer

are very easy to implement

Answer

are used to favor real-time tasks

Answer

require manual intervention to implement properly

Question 2

In which addressing mode the operand is given explicitly in the instruction?

Accepted Answer

immediate mode

Answer

absolute mode

Answer

indirect mode

Answer

index mode

Question 3

The technique, for sharing the time of a computer among several jobs. Which switches jobs so rapidly such that each job appears to have the computer to itself:

Accepted Answer

time sharing

Answer

time out

Answer

time domain

Answer

FIFO

Question 4

Capacity planning

Accepted Answer

is independent of the operating system

Answer

requires detailed system performance information

Answer

does not depend on the monitoring tools available

Answer

is not needed in small installations

Question 5

Poor response times are caused by

Accepted Answer

Any of the above

Answer

Processor busy

Answer

High I/O rate

Answer

High paging rates

Question 6

Link encryption

Accepted Answer

is less secure than end-to-end encryption

Answer

is more secure than end-to-end encryption

Answer

can not be used in a public network

Answer

is used only to debug

Question 7

A form of code that uses more than one process and processor, possibly of different type, and that may on occasions have more than one process or processor active at the same time, is known as

Accepted Answer

multithreading

Answer

multiprogramming

Answer

broadcasting

Answer

time sharing

Question 8

The table created by lexical analysis to describe all literals used in the source program is

Accepted Answer

Literal table

Answer

Terminal table

Answer

Identifier table

Answer

Reductions

Question 9

The term 'polling' in a computer means a process by which a computer system

Accepted Answer

inquires to see if a terminal has any transaction to send

Answer

detects/corrects errors

Answer

multiplexes the inputs and updates the memory accordingly

Answer

decides correct alternative by analysing several ones