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The following question based on operating system topic of computer mcq
(a) There is synchronization among processes at gross level.
(b) There is no explicit synchronization among processes.
(c) A parallel processing or multi tasking is done within a single application.
(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
Program counter (PC) contains
a) Address of an instruction to be fetched
b) Instructions most recently fetched
c) Data to be written into memory
d) Data to be read from memory
Answer »Answer: (a)
Question : 2
A solution to the Dining Philosophers Problem which avoids deadlock is
a) ensure that all philosophers pick up the left fork before the right fork.
b) ensure that all philosophers pick up the right fork before the left fork.
c) ensure that one particular philosopher picks up the left fork before the right fork, and all other philosophers pick up the right fork before the left fork.
d) none of the above
Answer »Answer: (c)
Question : 3
With round-robin CPU scheduling in a time shared system
a) using very large time slices degenerates into First-Come First Served Algorithm
b) using extremely small time slices improves performance
c) using very small time slices degenerate into Last-In-First-Out algorithm
d) using medium sized time slices leades to Shortest Request Time First algorithm.
Answer »Answer: (a)
Question : 4
Memory that is located on the disk either Hard or floppy is referred as
a) Virtual memory
b) Real memory
c) Main memory
d) None of these.
Answer »Answer: (a)
Question : 5
The Least Recently Used (LRU) policy
a) Replaces the page in memory that has not been referenced for the least time.
b) Replaces the page in memory that has not been referenced for the longest time.
c) Replaces the page in memory in round robin fashion.
d) None of these.
Answer »Answer: (b)
Question : 6
Memory table is used
a) To allocate main memory to processes
b) To allocate secondary memory to processes
c) To manage virtual memory
d) A, B and C are true.
Answer »Answer: (d)
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operating system set 1
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