operating system set 2 Detailed Explanation And More Example

Question : 1

In Dynamic partition of main memory in memory management, the sized of process and memory partition is

a) of exactly same size

b) of different size.

c) Both A and B true

d) None is true

Question : 2

Turnaround time is defined as

a) Delay between job submission and job completion

b) A waiting time

c) Both (A) and (B) above

d) None of these

Question : 3

Thrashing

a) reduces page I/O

b) decreases the degree of multiprogramming

c) implies excessive page I/O

d) improve the system performance

Question : 4

Fragmentation of the file system

a) can always be prevented

b) occurs only if the file system is used improperly

c) can be temporarily removed by compaction

d) is a characteristic of all file systems

Question : 5

In thread scheduling, load sharing is referred to

a) Simultaneous scheduling of threads that make up a single process.

b) Implicit scheduling defined by the assignment of threads to processors.

c) A global queue of ready thread is maintained and each processor, when idle, selects a thread from queue.

d) None of these.

Question : 6

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.