Operating systems concept MCQ Test 30

By | October 3, 2017

UGC-NET/GATE Multiple Choice Questions for Operating System.

Question 1
Which of the following is NOT a valid deadlock prevention scheme?
A
Release all resources before requesting a new resource
B
Number the resources uniquely and never request a lower numbered resource than the last one requested
C
Never request a resource after releasing any resource
D
Request and all required resources be allocated before execution
Question 2
An embedded object might appear in a document as
A
Embedding
B
Linking
C
Both
D
None of above
Question 3
Which is not an external command?
A
Edit
B
XCOPY
C
Sys
D
None of the above
Question 4
Which of following need a device driver?
A
Cache
B
Disk
C
Main Menory
D
Registers
Question 5
An operating system is known to be a layer of
A
Hardware
B
Software
C
Processes
D
Units
Question 6
What is not a major reason for building distributed systems?
A
Resource sharing
B
Computation speedup
C
Reliability
D
Simplicity
Question 7
The.......... is the drive containing the files to be copied
A
Source drive
B
Destination drive
C
USB drive
D
None of the above
Question 8
A uni-processor computer system only has two processes, both of which alternate 10ms CPU bursts with 90ms I/O bursts. Both the processes were created at nearly the same time. The I/O of both processes can proceed in parallel. Which of the following scheduling strategies will result in the least CPU utilization (over a long period of time) for this system?
A
First come first served scheduling
B
Shortest remaining time first scheduling
C
Static priority scheduling with different priorities for the two processes
D
Round robin scheduling with a time quantum of 5 ms
Question 9
You are adding a new server to your network. The network uses TCP/IP. The new server will provide users with dial-up access to network resources. The data link communications protocol you choose for dial-up access must allow you to provide secure authentication. Which protocol should you choose?
A
PPP
B
DLC
C
Both A and B
D
Neither a nor b
Question 10
In UNI, X even an 'empty' disk has a percentage of its space lost to..........
A
programs
B
inodes
C
virtual memory
D
stacks
Question 11
A small graphic which represents a computer program, drive, folder or document is known as
A
button
B
icon
C
picture
D
logo
Question 12
For sharable resources, mutual exclusion:
A
is required
B
is not required
C
depends on the operating system
D
none of the mentioned
Question 13
A single user operating system for IBM compatible personal computers were named as
A
MS Windows NT
B
MS-DOS
C
Windows 3.0
D
Microsoft windows
Question 14
Command which is used to clear the screen and display the operating system prompt on the first line of display is
A
cd
B
md
C
rename
D
cls
Question 15
Swapping
A
works best with many small partitions
B
allows many programs to use memory simultaneously
C
allows each program in turn to use the memory
D
does not work with overlaying
Question 16
Scheduling of threads are done by
A
input
B
output
C
operating system
D
memory
There are 16 questions to complete.

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