Operating System Questions Answers MCQ Download PDF

Operating System Questions Answers MCQ Download Operating System Questions Answers MCQ Practice Set

1)If the property of locality of reference is well pronounced in a program

a) the number of page faults will be more

b) the number of page faults will be less

c) the number of page faults will same

d) none of above

View Answer
Option – B.

2) Belady anamoly occurs in

a) Optimal replacement

b) FIFO

c) LRU

d) both in FIFO and LRU

View Answer
Option – B.

3)Memory protection is normally done by

a) the processor and the associated hardware

b) the operating system

c) the compiler

d) the user program

View Answer
Option – a.

4) In real time OS, which is most suitable scheduling scheme

a) round robin

b) FCFS

c) pre-emptive scheduling

d) random scheduling

View Answer
Option – c.

5)For multiprogramming operating system

a) special support from processor is essential

b) special support from processor is not essential

c) cache memory is essential

d) none of above

View Answer
Option – B.

6)Which operating system reacts in the actual time

a) Batch system

b) Quick response system

c) Real time system

d) Time sharing system

View Answer
Option – c.

7)Which technique is used by operating systems to execute several programs concurrently by switching back and forth

a) Partitioning

b) Multitasking

c) Windowing

d) Paging

View Answer
Option – c.

8)What is the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer user’s productivity?

a) Defined values

b) Fixed values

c) Default values

d) None of the above

View Answer
Option – c.

9)Shortest Job First executes first the job

a) with the least processor needs

b) that first entered the queue

c) that has been in the queue for the longest

d) that last entered the queue

View Answer
Option – a.

10) Fragmentation of a file system

a) occurs only is file is not used properly

b) can always be prevented

c) happens in all file systems

d) can be removed by compaction

View Answer
Option – b.

11) Which operating system use write through catches

a) UNIX

b) XENIX

c) ULTRIX

d) DOS

View Answer
Option – d.

12) Dynamic allocation of storage areas with VSAM files is accomplished by

a) hashing

b) control splits

c) over flow areas

d) relative recording

View Answer
Option – b.

13)Dijkstra’s algorithm deals with

a) mutual exclusion

b) deadlock recovery

c) deadlock avoidance

d) cache coherence

View Answer
Option – c.

14)A series of statements explaining how the data is to be processed is called

a) instruction

b) compiler

c) program

d) interpretor

View Answer
Option – c.

15) Which of following is not a condition of Dead Lock ?

a) Mutual Exclusion

b) No Preemption

c) Hold and Wait

d) Data Transfer

View Answer
Option – d.
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