Operating System MCQs

Question 1

Assembler is

Accepted Answer

a program that automate the translation of assembly language into machine language.

Answer

a program that places programs into memory and prepares them for execution.

Answer

a program that accepts a program written in a high level language and produces an object program.

Answer

is a program that appears to execute a source program as if it were machine language.

Question 2

Indicate which, of the following, in not true about an interpreter

Accepted Answer

Interpreter generates an object program from the source program

Answer

Interpreter is a kind of translator

Answer

Interpreter analyses each source statement every time it is to be executed

Answer

All of the above

Question 3

Object modules generated by assemblers that contain unresolved external references are resolved for two or more object modules by a/an

Accepted Answer

linker

Answer

operating system

Answer

loader

Answer

compiler

Question 4

The advantage of a command processor running only built-in commands is:

Accepted Answer

the command set being common across different hardware configurations

Answer

flexibility to the users in running lists of commands by simply collecting them in named batch command files

Answer

users can create system programs and run them as commands

Answer

the processing is much faster than would other-wise be the case when user defined commands are used

Question 5

Under multiprogramming, turnaround time for short jobs is usually _____ and that for long jobs is slightly _____.

Accepted Answer

shortened; lengthened

Answer

lengthened; shortened

Answer

shortened; shortened

Answer

lengthened; lengthened

Question 6

The most common systems security method is

Accepted Answer

passwords

Answer

encryption

Answer

firewall

Answer

all of the above

Question 7

Two basic types of operating systems are:

Accepted Answer

batch and interactive

Answer

sequential and direct

Answer

batch and timesharing

Answer

sequential and realtime

Question 8

Daisy chain is a device for

Accepted Answer

connecting a number of devices to a controller

Answer

connecting a number of controllers to a device

Answer

interconnecting a number of devices to a number of controllers

Answer

all of the above

Question 9

In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

Accepted Answer

creation of more optional matrix

Answer

recognition of basic syntactic constructs through reductions

Answer

recognition of basic elements and creation of uniform symbols

Answer

use of macro processor to produce more optimal assembly code