Operating systems concept MCQ Test 39

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

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Question 1
A file is a/an ....... data type.
A
abstract
B
primitive
C
public
D
private
Question 2
In MS-DOS, relocatable object files and load modules have extensions
A
.OBJ and .COM or .EXE, respectively
B
.EXE and .OBJ, respectively
C
.DAS and .EXE, respectively
D
None of the above
Question 3
Which of the following statement is true.
A
Thrashing is a natural consequence of virtual memory systems.
B
Seek analysis is used for analysing control-unit busy problems.
C
All of the above
D
None of the above
Question 4
To obtain better memory utilization, dynamic loading is used. With dynamic loading, a routine is not loaded until it is called. For implementing dynamic loading,
A
special support from hardware is required
B
special support from operating system is essential
C
special support from both hardware and operating system is essential
D
user programs can implement dynamic loading without any special support from hardware or operating system
Question 5
Optimal page replacement algorithm is difficult to implement, because :
A
it requires a lot of information
B
it requires future knowledge of the reference string
C
it is too complex
D
it is extremely expensive
Question 6
The two types of streaming techniques are :
  1. progressive download
  2. regular download
  3. real time streaming
  4. virtual time streaming
A
I and II
B
II and III
C
II, III and IV
D
I and III
Question 7
A tape holds ....... data than optical or magnetic disk cartridge.
A
lesser
B
more
C
much lesser
D
none of the above
Question 8
Which layer lies between transport layer and data link layer ?
A
Physical
B
Network
C
Application
D
Session
Question 9
What is cipher-block chaining ?
A
Data is logically ANDed with previous block
B
Data is logically ORed with previous block
C
Data is logically XORed with previous block
D
none of the above
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There are 9 questions to complete.

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