Operating System MCQs

1019 MCQs  (Page 77 of 102)

Attempt Operating System Quiz
Which algorithm chooses the page that has not been used for the longest period of time whenever the page required to be replaced?
A. First in first out algorithm
B. Additional reference bit algorithm
C. Least recently used algorithm
D. Counting based page replacement algorithm
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A process is thrashing if ____________
A. It spends a lot of time executing, rather than paging
B. It spends a lot of time paging than executing
C. It has no memory allocated to it
D. None of the mentioned
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Working set model for page replacement is based on the assumption of ____________
A. Modularity
B. Locality
C. Globalization
D. Random access
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Thrashing _______ the CPU utilization.
A. Increases
B. Keeps constant
C. Decreases
D. None of the mentioned
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What is a locality?
A. A set of pages that are actively used together
B. A space in memory
C. An area near a set of processes
D. None of the mentioned
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When a subroutine is called ____________
A. It defines a new locality
B. It is in the same locality from where it was called
C. It does not define a new locality
D. None of the mentioned
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A program is generally composed of several different localities, which _____ overlap.
A. May
B. Must
C. Do not
D. Must not
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In the working set model, for: 2 6 1 5 7 7 7 7 5 1 6 2 3 4 1 2 3 4 4 4 3 4 3 4 4 4 1 3 2 3 if DELTA = 10, then the working set at time t1 (….7 5 1) is?
A. {1, 2, 4, 5, 6}
B. {2, 1, 6, 7, 3}
C. {1, 6, 5, 7, 2}
D. {1, 2, 3, 4, 5}
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The accuracy of the working set depends on the selection of ____________
A. Working set model
B. Working set size
C. Memory size
D. Number of pages in memory
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If working set window is too small ____________
A. It will not encompass entire locality
B. It may overlap several localities
C. It will cause memory problems
D. None of the mentioned
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Word of the Day
13 Jul
Debunk
expose the falseness or hollowness of (an idea or belief).
بے نقاب کرنا، پول کھولنا

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