Operating System MCQs

Question 1

Page stealing . . . . . . .

Accepted Answer

is taking page frames from other working sets

Answer

is a sign of an efficient system

Answer

should be the tuning goal

Answer

is taking larger disk spaces for pages paged out

Question 2

In MS-DOS 5.0, which is the number that acts as a code to uniquely identify the software product?

Accepted Answer

5

Answer

MS

Answer

DOS

Answer

MS DOS

Question 3

Bug means

Accepted Answer

A logical error in a program

Answer

A difficult syntax error in a program

Answer

Documenting programs using an efficient documentation tool

Answer

All of the above

Question 4

Memory management is :

Accepted Answer

critical for even the simplest operating systems

Answer

not used in modern operating system

Answer

replaced with virtual memory on current systems

Answer

not used on multiprogramming systems

Question 5

The initial value of the semaphore that allows only one of the many processes to enter their critical sections, is

Accepted Answer

1

Answer

8

Answer

16

Answer

0

Question 6

The Register - to - Register (RR) instructions

Accepted Answer

which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.

Answer

have both their operands in the main store.

Answer

which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also

Answer

all of the above

Question 7

A page fault

Accepted Answer

is an access to a page not currently in memory

Answer

is an error is a specific page

Answer

occurs when a program accesses a page of memory

Answer

is a reference to a page belonging to another program

Question 8

An algorithm is best described as

Accepted Answer

A step by step procedure for solving a problem

Answer

A computer language

Answer

A branch of mathematics

Answer

All of the above

Question 9

The process of transferring data intended for a peripheral device into a disk (or intermediate store) so that it can be transferred to peripheral at a more convenient time or in bulk, is known as

Accepted Answer

spooling

Answer

multiprogramming

Answer

caching

Answer

virtual programming