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CDAC-CCEE operating system Mock test 3 (15 questions, time 15 minutes)

1.
CPU fetches the instruction from memory according to the value of

instruction register
status register
program counter
None of these
program counter
2.
Virtual memory is :

simple to implement
less efficient in utilization of memory
used in all major commercial operating systems
useful when fast I/O devices are not available
used in all major commercial operating systems
3.
The address of a page table in memory is pointed by

stack pointer
program counter
page register
page table base register
page table base register
4.
Message passing system allows processes to :

communicate with one another by resorting to shared data.
share data
name the recipient or sender of the message
communicate with one another without resorting to shared data.
communicate with one another without resorting to shared data.
5.
Advantage(s) of using assembly language rather than machine language is (are):

It is mnemonic and easy to read.
Addresses any symbolic, not absolute
Introduction of data to program is easier
all of the above
all of the above
6.
Advantage(s) of using assembly language rather than machine language is (are):

It is mnemonic and easy to read.
Addresses any symbolic, not absolute
Introduction of data to program is easier
all of the above
all of the above
7.
Messages sent by a process :

have to be of a fixed size
have to be a variable size
can be fixed or variable sized
None of these
can be fixed or variable sized
8.
Messages sent by a process :

have to be of a fixed size
have to be a variable size
can be fixed or variable sized
None of these
can be fixed or variable sized
9.
_____ is the concept in which a process is copied into main memory from the secondary memory according to the requirement.

Paging
Demand paging
Segmentation
Swapping
Demand paging
10.
Scheduling is done so as to :

increase CPU utilization
decrease CPU utilization
keep the CPU more idle
None of these
increase CPU utilization
11.
What is major feature of segmentation ?

Program is divided in data memory and program memory
Program is executed in segments
Program is divided into pieces having different access rights
It has effect of an unbounded architecture
Program is divided into pieces having different access rights
12.
If the process can be moved during its execution from one memory segment to another, then binding must be :

delayed until run time
preponed to load time
preponed to compile time
None of these
delayed until run time
13.
What is the name of the system which deals with the running of the actual computer and not with the programming problems?

Operating system
Object program
Source program
Systems program
Systems program
14.
Dynamic loading is :

loading a routine only when it is called
loading multiple routines dynamically
loading multiple routines randomly
None of these
loading a routine only when it is called
15.
Which hardware triggers some operation after certain programmed count?

programmable interval timer
interrupt timer
programmable timer
None of the above
programmable interval timer
16.
A deadlock free solution to the dining philosophers problem :

eliminates any possibility of any kind of problem further
necessarily eliminates the possibility of starvation
does not necessarily eliminate the possibility of starvation
None of these
does not necessarily eliminate the possibility of starvation


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