Operating System MCQs

Question 1

System maintenance:

Accepted Answer

is necessary on all systems, regardless of how good

Answer

is usually not necessary

Answer

is not required if the system is well written

Answer

always requires several programs

Question 2

Which of the following statements is not true about the FORTRAN language?

Accepted Answer

A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine

Answer

FORTRAN is a high level language

Answer

FORTRAN is extensively used to write programs for performing scientific computations

Answer

All of the above

Question 3

A linker

Accepted Answer

creates a load module

Answer

is not necessary with variable partitions

Answer

must be run after the loader

Answer

is not needed with a good compiler

Question 4

Uniform Symbols Table

Accepted Answer

consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

Answer

contains all constants in the program

Answer

a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure

Answer

a permanent table which lists all key words and special symbols of the language in symbolic form

Question 5

In which of the storage placement strategies a program is placed in the smallest available hole in the main memory?

Accepted Answer

best fit

Answer

first fit

Answer

worst fit

Answer

buddy

Question 6

In which addressing mode, the effective address of the operand is generated by adding a constant value to the contents of register?

Accepted Answer

index mode

Answer

absolute mode

Answer

indirect mode

Answer

immediate mode

Question 7

The higher versions of the operating systems are so written that programs designed for earlier versions can still be run. What is it called?

Accepted Answer

Upward compatibility

Answer

Upgradability

Answer

Upward mobility

Answer

Universality

Question 8

If special forms are needed for printing the output, the programmer specifies these forms through?

Accepted Answer

JCL

Answer

JPL

Answer

Utility programs

Answer

Load modules

Question 9

Which policy replace a page if it is not in the favoured subset of a process's pages?

Accepted Answer

Working set

Answer

FIFO

Answer

LRU

Answer

LFU