Operating systems concept MCQ Test 31

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

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Question 1
What are routing strategies used in distributed systems ?
  1. Fixed routing
  2. Token routing
  3. Virtual circuit
  4. Dynamic routing
A
I and III
B
II and III
C
II, III and IV
D
I,III and IV
Question 2
The maximum amount of information that is available with one position of the disk access arm for a removal disk pack (without further movement of the arm with multiple heads) is
A
a plate of data
B
a cylinder of data
C
a track of data
D
a block of data
Question 3
Uniform Symbols Table
A
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure.
B
consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation
C
a permanent table which lists all key words and special symbols of the language in symbolic form.
D
None of the above
Question 4
Some directory information is kept in main memory or cache to ............
A
fill up the cache
B
increase free space in secondary storage
C
decrease free space in secondary storage
D
speed up access
Question 5
Four necessary conditions for deadlock to exist are: mutual exclusion, no-preemption, circular wait and
A
hold and wait
B
race around condition
C
buffer overflow
D
None of the above
Question 6
Seeks analysis
A
is used for analyzing device busy problems
B
is used for analyzing control-unit busy problems
C
is only shown on real-time displays
D
None of the above
Question 7
Which of the following rules out the use of GO TO?
A
HIPO-DIAGRAMS
B
Nassi-Shneiderman diagram
C
All of the above
D
None of the above
Question 8
Which technique is based on compile-time program transformation for accessing remote data in a distributed-memory parallel system.
A
cache coherence scheme
B
computation migration
C
remote procedure call
D
message passing
Question 9
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
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