operating system set 6 Detailed Explanation And More Example
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The following question based on operating system topic of computer mcq
(a) Data that is to be written into memory
(b) A particular I/O device.
(c) Exchange data between I/O module and the processor.
(d) The instruction most recently fetched.
The correct answers to the above question in:
Answer: (a)
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Question : 1
The demand paging and pre paging of virtual memory management are
- P - Fetch, Q -Demand paging, R -Prepaging;
- 1-Determines when a page should be bought into main memory. 2- A page is bought into main memory only when a reference is made to a location on that page. 3-Pages other than the one demanded by a page fault are bought in.
a) A - 1, B - 2, C - 3
b) A - 3, B - 2, C - 1
c) A - 2, B - 3, C - 1
d) A - 3, B - 1, C - 2
Answer »Answer: (a)
Question : 2
In memory management where replacement is allowed in First-in-First-out (FIFO) fashion
a) The page frames are allocated to a process as circular buffer and pages are removed in random order.
b) The page frames are allocated to a process as circular buffer and pages are removed in round-robin order.
c) Replaces the pages that are least referred.
d) Replaces the pages that are most referred.
Answer »Answer: (b)
Question : 3
Thrashing
a) the high paging activity
b) is spending more time in paging than executing
c) both A and B above
d) none of the above
Answer »Answer: (c)
Question : 4
Compile time
a) where the process will reside in memory, then absolute code can be generated
b) where the process will reside in memory, then the compiler must generate relocatable code
c) if the process can be moved during its execution from one memory segment to another,the binding must be delayed until run time
d) all of the above
Answer »Answer: (a)
Question : 5
A task in a blocked state is
a) Executable
b) Waiting for some temporarily unavailable resource
c) Running
d) None of these
Answer »Answer: (b)
Question : 6
I/O modules move data
a) Between external environment and computer.
b) In the computer main memory.
c) In Processors
d) None of these.
Answer »Answer: (a)
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