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The following question based on operating system topic of computer mcq
(a) A modified page is written before their page frames are needed to so that pages can be written out in batches.
(b) A page is written out to secondary memory only when it has been selected for replacement.
(c) A and B both true.
(d) None of these.
The correct answers to the above question in:
Answer: (b)
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Read more operating system Based Computer Questions and Answers
Question : 1
Which is the correct definition of a valid process transition in an operating system?
a) Wake up: ready ? running
b) Dispatch: ready? running
c) Block: ready ? running
d) Timer runout : ready ? blocked
Answer »Answer: (b)
Question : 2
A situation where two or more processes coordinate their activities based on a condition is referred as
a) Synchronization
b) Dead lock
c) Starvation
d) Par begin
Answer »Answer: (a)
Question : 3
User-visible register
a) Enables machine language programmer to minimize main memory reference by optimizing register use.
b) Enables assembly language programmer to minimize main memory reference by optimizing register use.
c) A and B both true.
d) A and B both false.
Answer »Answer: (c)
Question : 4
In two level scheme for page table, if one assume byte-level addressing and 4-kbyte (2 12 pages) then the 4-Gbyte (2 32) virtual address space is composed of
a) 2 10 pages
b) 2 20 pages
c) 2 30 pages
d) 2 40 pages
Answer »Answer: (b)
Question : 5
Windows is an
a) operating system
b) operating environment
c) user interface
d) programming platform
Answer »Answer: (c)
Question : 6
Following is not true for disk cache
a) It is a buffer in main memory for disk sector
b) It contains the copy of some of the sector on the disk
c) It is bigger is size than main memory
d) It is smaller is size than main memory
Answer »Answer: (c)
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