Operating systems concept MCQ Test 11

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

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Question 1
Contiguous allocation of a file is defined by :
  1. disk address of the first block
  2. length
  3. size of the block
  4. total size of the file
A
I and III
B
II and III
C
II, III and IV
D
I and II
Question 2
An SJF algorithm is simply a priority algorithm where the priority is :
A
the predicted next CPU burst
B
the inverse of the predicted next CPU burst
C
the current CPU burst
D
anything the user wants
Question 3
In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with
A
recognition of basic elements and creation of uniform symbols.
B
creation of more optional matrix.
C
use of macro processor to produce more optimal assembly code
D
None of the above
Question 4
In the bakery algorithm to solve the critical section problem :
A
each process is put into a queue and picked up in an ordered manner
B
each process receives a number (may or may not be unique) and the one with the lowest number is served next
C
each process gets a unique number and the one with the highest number is served next
D
each process gets a unique number and the one with the lowest number is served next
Question 5
Backups should be done
A
weekly for most installations
B
as several image copies, followed by an incremental
C
as several incrementals, followed by an image copy
D
None of the above
Question 6
Which, of the following, is true for testing and debugging?
A
Testing checks for logical errors in the programs, while debugging is a process of correcting those errors in the program
B
Testing and debugging indicate the same thing
C
All of the above
D
None of the above
Question 7
What is not a major reason for building distributed systems ?
A
Resource sharing
B
Computation speedup
C
Reliability
D
Simplicity
Question 8
Which policy replace a page if it is not in the favoured subset of a process's pages?
A
LRU
B
LFU
C
Working set
D
None of the above
Question 9
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
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