Operating systems concept MCQ Test 6

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

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Question 1
Consider a logical address space of 8 pages of 1024 words mapped into memory of 32 frames. How many bits are there in the physical address?
A
9 bits
B
11 bits
C
13 bits
D
15 bits
Question 2
Virtual memory is
A
used in all major commercial operating systems
B
less efficient in utilization of memory
C
useful when fast I/O devices are not available
D
None of the above
Question 3
In paging the user provides only ........, which is partitioned by the hardware into ........ and .......
  1. one address, page number, offset
  2. one offset, page number, address
  3. page number, offset, address
  4. None of these
a
A
I and III
B
II and III
C
II, III and IV
D
I
Question 4
What are examples of state information ?
  1. Mounting information
  2. Description of HDD space
  3. Session keys
  4. Lock status
A
I and III
B
II and III
C
II, III and IV
D
I,III and IV
Question 5
A Process Control Block(PCB) does not contain which of the following :
A
Code
B
Stack
C
Heap
D
Data e) Program Counter f) Process State g) I/O status information
Question 6
The three ways in which a process responds to a signal are :
  1. ignoring the signal
  2. handling the signal
  3. performing some default action
  4. asking the user to handle the signal
A
I and III
B
II and III
C
II, III and IV
D
I,II and III
Question 7
The file structure that redefines its first record at a base of zero uses the term
A
relative organization
B
key fielding
C
dynamic reallocation
D
all of these
Question 8
The ability to move around within a media stream is known as :
A
buffering
B
random access
C
access
D
sequential access
Question 9
Advantage(s) of using assembly language rather than machine language is (are):
A
Addresses any symbolic, not absolute
B
Introduction of data to program is easier
C
all of the above
D
None of the above
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