Operating systems concept MCQ Test 34

By | October 3, 2017

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

Question 1
Which is the earliest and most widely used shell that came with the UNIX system?
A
C shell
B
Korn shell
C
Bourne shell
D
Smith shell
Question 2
If a page number is not found in the TLB, then it is known as a:
A
TLB miss
B
Buffer miss
C
TLB hit
D
All of the mentioned
Question 3
In the working set model, for: 2 6 1 5 7 7 7 7 5 1 6 2 3 4 1 2 3 4 4 4 3 4 3 4 4 4 1 3 2 3 if DELTA = 10, then the working set at time t1 (...7 5 1) is:
A
{1, 2, 4, 5, 6}
B
{2, 1, 6, 7, 3}
C
{1, 6, 5, 7, 2}
D
{1, 2, 3, 4, 5}
Question 4
Which table contains the information about each mounted volume?
A
mount table
B
system-wide open-file table
C
per-process open-file table
D
all of the mentioned
Question 5
Special set of characters that computer associates with specific user identification is classified as
A
password
B
identity code
C
inquiry code
D
dump code
Question 6
A preemptive type of process scheduling strategy:
A
Highest Response Ratio Next Scheduling
B
Shortest Job First Scheduling
C
First in First out Scheduling
D
Shortest Remaining Time Next Scheduling
Question 7
A sequence of instructions, in a computer language, to get the desired result, is known as
A
Algorithm
B
Decision Table
C
Program
D
All of the above
Question 8
While working with MS-DOS, which command is used to move file from one directory to another?
A
RENAME
B
COPY
C
MOVE
D
CP
Question 9
What are the advantages of file replication?
A
Improves availability &performance
B
Decreases performance
C
They are consistent
D
Improves speed
Question 10
Sometimes the overhead of keeping track of a hole might be:
A
larger than the memory
B
larger than the hole itself
C
very small
D
all of the mentioned
Question 11
The term 'polling' in a computer means a process by which a computer system
A
detects/corrects errors
B
multiplexes the inputs and updates the memory accordingly
C
decides correct alternative by analysing several ones
D
inquires to see if a terminal has any transaction to send
Question 12
Consider a computer with 8 Mbytes of main memory and a 128 K cache. The cache block size is 4 K. It uses a direct mapping scheme for cache management. How many different main memory blocks can map onto a given physical cache block?
A
2048
B
256
C
64
D
8
Question 13
Essential element for Process is
A
Time
B
Program
C
Code
D
Process ID
Question 14
What is preferred way of encryption?
A
pre shared secret key
B
using key distribution center (KDC)
C
public key-encryption
D
symmetric key
Question 15
Which of the following is not a filter command?
A
sort
B
wc
C
grep
D
cat
Question 16
Which of the following objects require protection?
A
CPU
B
Printers
C
Motherboard
D
All of the mentioned
There are 16 questions to complete.

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