Operating systems concept MCQ Test 19

By | October 3, 2017
Welcome!!! Click on any option for correct answer

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

Question 1
The child process completes execution,but the parent keeps executing, then the child process is known as :
A
Orphan
B
Zombie
C
Body
D
Dead
Question 2
A thread is also called :
A
Light Weight Process(LWP)
B
Heavy Weight Process(HWP)
C
Process
D
none of the above
Question 3
Which algorithm of disk scheduling selects the request with the least seek time from the current head positions?
A
SSTF scheduling
B
FCFS scheduling
C
SCAN scheduling
D
LOOK scheduling
Question 4
A memory page containing a heavily used variable that was initialized very early and is in constant use is removed, then the page replacement algorithm used is :
A
LRU
B
LFU
C
FIFO
D
none of the above
Question 5
The replacement of a bad block generally is not totally automatic because
A
data in bad block can not be replaced
B
data in bad block is usually lost
C
bad block does not contain any data
D
none of the above
Question 6
Earliest deadline first algorithm assigns priorities according to :
A
periods
B
deadlines
C
burst times
D
none of the above
Question 7
A sequence of instructions, in a computer language, to get the desired result, is known as
A
Decision Table
B
Program
C
All of the above
D
None of the above
Question 8
A demand paging system, with page table held in registers, takes 5 ms to service a page fault if an empty page is available, or if the page to be replaced is not dirty. It takes 15 ms if the replaced page is dirty. Memory access time is 1ms. Assume we want an effective access time of 2ms and that the page to be replaced is dirty 60% of the time. What is the approximate maximum acceptable page fault rate to meet this access time requirement ?
A
0.10%
B
1.00%
C
2.50%
D
0.01%
Question 9
System wide table in UNIX contains process independent information such as :
  1. location of file on disk
  2. access dates
  3. file size
  4. file contents
b, c
A
I and III
B
II and III
C
II, III and IV
D
I,II and III
Please report wrong answer in comment box
There are 9 questions to complete.

Leave a Reply

Your email address will not be published.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