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The following question based on operating system topic of computer mcq
(a) Ratio of turnaround time to service time
(b) Ratio of turnaround time to waiting time
(c) Ratio of service time to waiting time
(d) Ratio of waiting time to service time.
The correct answers to the above question in:
Answer: (a)
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Question : 1
Application Programming Interface is
a) A set of function and call programs that allows clients and servers to intercommunicate.
b) A database, where information access is limited to the selection of rows that satisfy all search criteria.
c) A computer usually a high powered work station.
d) None of these.
Answer »Answer: (a)
Question : 2
In uni-processor scheduling, a priorities enforcement is
a) When processes are assigned priorities and scheduling policy favor higher priority processes.
b) The scheduling keeps resources of system busy.
c) Here currently running process can be interrupted and moved to ready state by the operating system.
d) None of these.
Answer »Answer: (a)
Question : 3
By principle of locality, in least recently used policy, in memory management
a) The page replaced in memory is least likely to be referenced in the near future.
b) The page replaced in memory is most likely to be referenced in the near future.
c) The pages replaced in memory in round-robin fashion.
d) None of these.
Answer »Answer: (a)
Question : 4
Arrange the following I/O device in increasing data rate Hard disk, Floppy disk, Key board
a) Key board, Floppy disk, Hard disk
b) Floppy disk, Key board, Hard disk
c) Key board, Hard disk, Floppy disk
d) Hard disk, Floppy disk, Key board.
Answer »Answer: (a)
Question : 5
Which of the RAID level does not employ independent access technique ?
a) RAID 6
b) RAID 5
c) RAID 4
d) RAID 3
Answer »Answer: (d)
Question : 6
Which of the following RAID level uses independent access technique and distributes the parity strips across all disks?
a) Two
b) Three
c) Four
d) Five
Answer »Answer: (d)
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