Operating systems concept MCQ Test 25

By | October 3, 2017

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

Question 1
The core of operating system is:
A
Unix
B
Kernel
C
Command.com
D
None of these
Question 2
In order to allow only one process to enter its critical section, binary semaphore are initialized to
A
0
B
1
C
2
D
3
Question 3
Use of icons and windows are characteristics of..... interface
A
Command driven
B
Windows orientated
C
Graphical user
D
Menu driven
Question 4
When two or more processes attempt to access the same resource a..... occurs.
A
Critical section
B
Fight
C
Communication problem
D
Race condition
Question 5
To view any currently running Terminate Stay Resident (TSR's) programs you could type:
A
Memory
B
MEM
C
SYS /M
D
MEMMAKER
Question 6
Which of the following commands is used to list contents of directories?
A
ls
B
lp
C
dir
D
tar
Question 7
What of the following tool is used to check and repair Linux file systems?
A
mkfs
B
fdisk
C
fsck
D
mount
Question 8
Process of preventing a job's memory partition from changing instruction of a job in another memory partition is called
A
Memory protection
B
Memory copyrights
C
Memory bounding
D
Memory walls
Question 9
NUMA can access memory from any unit takes
A
same time
B
different time
C
less time
D
more time
Question 10
Let the page fault service time be 10ms in a computer with average memory access time being 20ns. If one page fault is generated for every $10^6$ memory accesses, what is the effective access time for the memory?
A
21ns
B
30ns
C
23ns
D
35ns
Question 11
Fibre Optic cable is often used to
A
replace UTP because it is cheaper
B
overcome distance limitations
C
connect PC's to wall outlets
D
link remote sites using a WAN connection
Question 12
A system program that combines the separately compiled modules of a program into a form suitable for execution
A
assembler
B
linking loader
C
cross compiler
D
load and go
Question 13
Each network segment must have a unique address
A
True
B
False
C
May be
D
Can't say
Question 14
A relative block number is an index relative to:
A
the beginning of the file
B
the end of the file
C
the last written position in file
D
none of the mentioned
Question 15
The commonly used UNIX commands like date, ls, cat, etc. are stored in
A
/dev directory
B
/bin and /usr/bin directories
C
/tmp directory
D
/unix directory
Question 16
Microsoft released window 95 in
A
1990
B
1996
C
1995
D
1985
There are 16 questions to complete.

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