operating system set 3 Detailed Explanation And More Example

Question : 1

A Semaphore is initialized to

a) Negative integer value

b) Positive integer value

c) Non-negative integer value

d) Non-positive integer value.

Question : 2

I/O modules in computer

a) Controls the operation of the computer.

b) Stores data and program.

c) Move data between the computer and external environment.

d) Provides communication among processors and main memory.

Question : 3

Round robin is a

a) kind of magnetic drum

b) process scheduling policy

c) process synchronization policy

d) memory allocation policy

Question : 4

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 : 5

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 : 6

Window 98 is a

a) Single user system

b) Multi user system

c) Single tasking system

d) None of these.