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MCQs

Total Questions : 63 | Page 3 of 7 pages
Question 21.

The “blocking factor” of a file is


  1.    The number of blocks accessible to a file
  2.    The number of blocks allocated to a file
  3.    The number of logical records in one physical record
  4.    None of the above
 Discuss Question
Answer: Option C. -> The number of logical records in one physical record



Question 22.

Interval between the time of submission and completion of the job is called


  1.    Waiting time
  2.    Turnaround time
  3.    Throughput
  4.    Response time
 Discuss Question
Answer: Option B. -> Turnaround time



Question 23.
The term 'polling' in a computer means a process by which a computer system



  1.    detects/corrects errors
  2.    multiplexes the inputs and updates the memory accordingly
  3.    decides correct alternative by analysing several ones
  4.    inquires to see if a terminal has any transaction to send
 Discuss Question
Answer: Option D. -> inquires to see if a terminal has any transaction to send


Question 24.

“Throughput” of a system is


  1.    Number of programs processed by it per unit time
  2.    Number of times the program is invoked by the system
  3.    Number of requests made to a program by the system
  4.    None of the above
 Discuss Question
Answer: Option A. -> Number of programs processed by it per unit time


Question 25.

An operating system contains 3 user processes each requiring 2 units of resource
R .The minimum number of units of R such that no deadlocks will ever arise is


  1.    4
  2.    3
  3.    5
  4.    6
 Discuss Question
Answer: Option A. -> 4



Question 26.

‘LRU’ page replacement policy is


  1.    Last Replaced Unit.
  2.    Last Restored Unit.
  3.    Least Recently Used.
  4.    Least Required Unit.
 Discuss Question
Answer: Option C. -> Least Recently Used.



Question 27.

The field that contains a segment index or an internal index is called


  1.    target datum
  2.    target offset
  3.    segment field
  4.    fix dat
 Discuss Question
Answer: Option A. -> target datum


Question 28.

A linker program


  1.    places the program in the memory for the purpose of execution.
  2.    relocates the program to execute from the specific memory area allocated to it.
  3.    links the program with other programs needed for its execution.
  4.    interfaces the program with the entities generating its input data.
 Discuss Question
Answer: Option C. -> links the program with other programs needed for its execution.


Question 29.

The expansion of nested macro calls follows


  1.    FIFO rule.
  2.    LIFO rule.
  3.    LILO rule.
  4.    priority rule.
 Discuss Question
Answer: Option B. -> LIFO rule.


Question 30.

Which of the following loader is executed when a system is first turned on or restarted


  1.    Boot loader
  2.    Compile and Go loader
  3.    Bootstrap loader
  4.    Relating loader
 Discuss Question
Answer: Option C. -> Bootstrap loader



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