Operating systems concept MCQ Test 22

By | October 3, 2017

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

Question 1
Operating system which doesn't support networking between computers is
A
windows 3.1
B
windows 95
C
windows 2000
D
windows NT
Question 2
I/O of computer system is an abbreviation of
A
input
B
output
C
interaction
D
both A and B
Question 3
Consider a system with a two-level paging scheme in which a regular memory access takes 150 nanoseconds, and servicing a page fault takes 8 milliseconds. An average instruction takes 100 nanoseconds of CPU time, and two memory accesses. The TLB hit ratio is 90%, and the page fault rate is one in every 10, 000 instructions. What is the effective average instruction execution time?
A
645 nanoseconds
B
1050 nanoseconds
C
1215 nanoseconds
D
1230 nanoseconds
Question 4
Rate monotonic scheduling assumes that the:
A
processing time of a periodic process is same for each CPU burst
B
processing time of a periodic process is different for each CPU burst
C
periods of all processes is the same
D
none of the mentioned
Question 5
The working set theory of programming behaviour of processes running within an operating system involves
A
the collection of pages that a process accesses
B
disk scheduling mechanisms
C
coalescing holes in memory
D
assigning the CPU to processes
Question 6
A disk that has a boot partition is called a..........
A
start disk
B
end disk
C
boot disk
D
all of the mentioned
Question 7
In contiguous memory allocation:
A
each process is contained in a single contiguous section of memory
B
all processes are contained in a single contiguous section of memory
C
the memory space is contiguous
D
none of the mentioned
Question 8
What is the mounting of file system?
A
crating of a filesystem
B
deleting a filesystem
C
attaching portion of the file system into a directory structure
D
removing portion of the file system into a directory structure
Question 9
A binary semaphore is a semaphore with integer values:
A
1
B
-1
C
0.8
D
0.5
Question 10
The location of some system configuration and system administrator executable files, is:
A
/home
B
/proc
C
/var
D
/sbin
Question 11
The MODE command of MS-DOS is used to
A
display information about several types of devices installed in your computer
B
provide various types of control over your printers
C
make changes of the current display
D
All of the above
Question 12
Which of the following capabilities is required for a system program to execute more than one program at a time?
A
word processing
B
compiling
C
virtual memory
D
multitasking
Question 13
If interarrival times are exponentially distributed, the number ofarrivals in a time interval t is a
A
Passion distribution
B
Poisson process
C
Poisson distribution
D
Both A and B
Question 14
Which of the following is not a type of folder view?
A
tiles
B
cascades
C
thumbnails
D
details
Question 15
The octal representation 652 indicates
A
Execute permission for the owner
B
Write permission for others
C
Read and write permission of groups
D
All of the above
Question 16
What command do you use to delete a file?
A
rename
B
delete
C
rm
D
cp
There are 16 questions to complete.

Leave a Reply

Your email address will not be published. Required fields are marked *