Operating systems concept MCQ Test 27

By | October 3, 2017
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UGC-NET/GATE Multiple Choice Questions for Operating System.

Question 1
Which of the following instruction steps, would be written within the diamond-shaped bo,X of a flowchart?
A
IS A<10
B
PRINT A
C
DATA ,X4Z
D
None of the above
Question 2
The most effective technique to keep dispatch latency low is to :
A
provide non preemptive kernels
B
provide preemptive kernels
C
make it user programmed
D
run less number of processes at a time
Question 3
To avoid the race condition, the number of processes that may be simultaneously inside their critical section is
A
1
B
16
C
0
D
None of the above
Question 4
What are two features of a tripwire file system ?
  1. It is a tool to monitor file systems
  2. It is used to alert system administrator to these modification
  3. It is used to automatically take corrective action
  4. It is used to secure UNIX system
A
I and III
B
II and III
C
II, III and IV
D
I and II
Question 5
Two basic types of operating systems are:
A
batch and timesharing
B
sequential and realtime
C
batch and interactive.
D
None of the above
Question 6
The CPU, after receiving an interrupt from an I/O device
A
hands over control of address bus and data bus to the interrupting device
B
branches off to the interrupt service routine immediately
C
branches off to the interrupt service routine after completion of the current instruction
D
None of the above
Question 7
Some of the properties of real time systems include :
  1. single purpose
  2. multi purpose
  3. small size
  4. large size
  5. inexpensively mass produced
  6. expensive and minor production
  7. None of these
A
I and III
B
II and III
C
II, III and IV
D
I,III and V
Question 8
Interprocess communication
A
is usually done via disk drives
B
is never necessary,
C
allows processes to synchronize activity
Question 9
Which of the following is a good practice ?
A
Give full permission for remote transferring
B
Grant read only permission
C
Grant limited permission to specified account
D
Give both read and write permission but not execute.
Please report wrong answer in comment box
There are 9 questions to complete.

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