operating system set 1 Detailed Explanation And More Example

Question : 1

In memory management when demand cleaning policy is applied

a) A modified page is written before their page frames are needed to so that pages can be written out in batches.

b) A page is written out to secondary memory only when it has been selected for replacement.

c) A and B both true.

d) None of these.

Question : 2

Which is the correct definition of a valid process transition in an operating system?

a) Wake up: ready ? running

b) Dispatch: ready? running

c) Block: ready ? running

d) Timer runout : ready ? blocked

Question : 3

A situation where two or more processes coordinate their activities based on a condition is referred as

a) Synchronization

b) Dead lock

c) Starvation

d) Par begin

Question : 4

Windows is an

a) operating system

b) operating environment

c) user interface

d) programming platform

Question : 5

Following is not true for disk cache

a) It is a buffer in main memory for disk sector

b) It contains the copy of some of the sector on the disk

c) It is bigger is size than main memory

d) It is smaller is size than main memory

Question : 6

Main memory is referred as

a) Virtual memory

b) Real memory

c) A and B both

d) None of these.