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The following question based on operating system topic of computer mcq
(a) These tables manage I/O devices and channels of the computer system.
(b) These tables provide information about the existence of files, their location on secondary memory and their current status.
(c) These tables provide information to manage process.
(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
When an interrupt occurs, an operating system
a) ignores the interrupt
b) always changes state of interrupted process after processing the interrupt
c) always resumes execution of interrupted process after processing the interrupt
d) may change state of interrupted process to blocked and schedule another process
Answer »Answer: (d)
Question : 2
Thrashing can be avoided if
a) the pages, belonging to the working set of the programs are in main memory
b) the speed of CPU is increased
c) the speed of I/O processor is increased
d) all of the above
Answer »Answer: (a)
Question : 3
UNIX recognizes following I/O devices
a) Disk and Tape drives
b) Terminals
c) Communication lines
d) All the above.
Answer »Answer: (d)
Question : 4
Following is/are operating system used in computers
a) MS-DOS
b) OS/2
c) UNIX
d) All of the above
Answer »Answer: (d)
Question : 5
Following is the correct definition of a valid process transition within an operating system
a) wake up : ready -> running
b) dispatch: ready -> running
c) block: ready -> blocked
d) timer run out : ready -> blocked
Answer »Answer: (b)
Question : 6
MAR (memory address register)
a) Contains data to be written into memory.
b) Contains data to be read from memory.
c) Specifies location in memory for next read/or writer.
d) Contains address of next instruction to be fetched.
Answer »Answer: (c)
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operating system set 1
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