operating system Practice Questions Answers Test with Solutions & More Shortcuts

Question : 16

UNIX is a

a) Operating system

b) Hardware

c) Programming language

d) None of these.

Question : 17

The OS/2 is the operating system that support

a) Single thread per process

b) Multiple thread per process

c) Single process

d) None of these.

Question : 18

Instruction processing consists of

a) Fetch cycle only

b) Execution cycle only

c) Fetch and Execution cycle both

d) None of these.

Question : 19

The principle of locality states

a) The program and data references within a process tend to cluster.

b) The program and data references within a process do not tend to cluster.

c) A process actually referred in virtual memory.

d) None of these.

Question : 20

When pre cleaning policy is applied in memory management

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

b) Modified pages are written before their page frames are needed so that can be written out in batches.

c) A and B both true.

d) None of these.