Operating systems concept MCQ Test 13

By | October 3, 2017

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

Question 1
In building cabling, horizontal wiring from the telecommunications closet (TC) to the wall outlet has a distance limitation of
A
3 meters
B
6 meters
C
90 meters
D
300 meters
Question 2
Translation Look-aside Buffer (TLB) is
A
a cache-memory in which item to be searched is compared on.e-by-one with the keys
B
a cache-memory in which item to be searched is compared with all the keys simultaneously
C
an associative memory in which item to be searched is compared one-by-one with the keys
D
an associative memory in which item to be searched is compared with all the keys simultaneously
Question 3
Operating system's module that is responsible for protection of files is known to be
A
File management
B
Command interpretation
C
Security
D
Process management
Question 4
Which of the following can be accesses by transfer vector approach of linking?
A
External data segments
B
External subroutines
C
Data located in other procedures
D
All of the above
Question 5
The systems which allows only one process execution at a time, are called
A
uniprogramming systems
B
uniprocessing systems
C
unitasking systems
D
none of the mentioned
Question 6
MAC is a
A
command line interface
B
graphical user interface
C
batch interface
D
device interface
Question 7
What is the most appropriate function of Memory Management Unit (MMU)?
A
It is an associative memory to store TLB
B
It is a technique of supporting multiprogramming by creating dynamic partitions
C
It is a chip to map virtual address to physical address
D
It is an algorithm to allocate and deallocate main memory to a process
Question 8
The three levels in QoS are:
A
Best effort service
B
Soft QoS
C
Hard QoS
D
All of the mentioned
Question 9
If you do not know the current time, which command will you use to display the time?
A
COPY
B
VER
C
TIME
D
FORMAT
Question 10
Applying the LRU page replacement to the following reference string: 1 2 4 5 2 1 2 4 The main memory can accommodate 3 pages and it already has pages 1 and 2. Page 1 came in before page 2. How many page faults will occur?
A
2
B
3
C
4
D
5
Question 11
Which of the following is not a communication command?
A
grep
B
mail
C
mesg
D
write
Question 12
Which facility dynamically adds probes to a running system, both in user processes and in the kernel?
A
DTrace
B
DLocate
C
DMap
D
DAdd
Question 13
DIR command is used to
A
display a list of files in a directory
B
display contents
C
display types of files
D
display confriguration files
Question 14
Which of the following options will be used to display number of blocks used by a file?
A
-c
B
-i
C
-d
D
-s
Question 15
Which operation is performed by an interrupt handler?
A
Saving the current state of the system
B
Loading the interrupt handling code and executing it
C
Once done handling, bringing back the system to the original state it was before the interrupt occurred
D
All of these
Question 16
Who is called a supervisor of computer activity?
A
CPU
B
Operating system
C
Control unit
D
Application Program
There are 16 questions to complete.

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