operating system set 3 Detailed Explanation And More Example

Question : 1

A fetch policy for virtual memory determines

a) When a page should be bought into main memory.

b) Where in real memory a process piece is to be reside.

c) The selection of a page in memory that is to replaced.

d) The page in memory that is not been referenced for long time.

Question : 2

In file management system the following communicate directly with periphing I/O devices.

a) Device drives

b) Basic file system

c) Basic I/O supervisor

d) Logical I/O.

Question : 3

Fixed partitions

a) are very common in current operating systems

b) are very efficient in memory utilization

c) are very inefficient in memory utilization

d) are most used on large mainframe operating systems

Question : 4

Locality of reference implies that the page reference being made by a process

a) will always be to the page used in the previous page reference

b) is likely to be to one of the pages used in the last few page references

c) will always be to one of the pages existing in memory

d) will always lead to a page fault

Question : 5

When operating system always run on a particular processor and that particular processor do all scheduling and process management then this is an example of

a) Master/slave architecture

b) Symmetric multiprocessor

c) Cluster

d) None of these.

Question : 6

In semaphore the process blocked by wait operation is unblocked if

a) Semaphore value becomes nonnegative

b) Semaphore value becomes nonpositive

c) Semaphore value is negative

d) Semaphore value is positive.