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The following question based on operating system topic of computer mcq
(a) simple to implement
(b) used on all major commercial operating systems
(c) less efficient in utilization of memory
(d) useful when fast I/O devices are not available
The correct answers to the above question in:
Answer: (c)
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Read more operating system Based Computer Questions and Answers
Question : 1
The following is not an advantage of User Level Threads (ULT).
a) Thread switching does not requires kernel mode privileges because all of the thread management are within the user address space of a single process.
b) Here scheduling can be application specific.
c) ULT can be run an any operating system.
d) When ULT executes a system call, not only that thread blocked, but all of the threads within the process are blocked.
Answer »Answer: (d)
Question : 2
The operations of the processor are supervised by
a) Control and Status register
b) Data register.
c) Address register.
d) None of these.
Answer »Answer: (a)
Question : 3
Following is not the stream oriented I/O device
a) Printer
b) Mouse
c) Communication modules
d) Disk/tape
Answer »Answer: (d)
Question : 4
IR (Instruction register)
a) Contains the address of an instruction to be fetched.
b) Contains the instruction most recently fetched
c) Specifies memory addresses.
d) None of these.
Answer »Answer: (b)
Question : 5
In RAID (Redundant Array of Independent Disks) scheme, which of the following RAID level does not include redundancy to improve performance ?
a) RAID level 0
b) RAID level 1
c) RAID level 2
d) RAID level 4
Answer »Answer: (a)
Question : 6
In uni-processor scheduling, if nonpreemptive policy is applied then
a) Once a process is in running state, it continues to execute until it terminates or block itself.
b) Currently running process can be interrupted and moved to ready state by the operating system.
c) The clock interrupt is generated at periodic intervals.
d) None of these.
Answer »Answer: (a)
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operating system set 1
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