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The following question based on operating system topic of computer mcq
(a) 1 M bytes
(b) 2 M bytes
(c) 3 M bytes
(d) 4 M bytes.
The correct answers to the above question in:
Answer: (d)
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Question : 1
Dirty bit for a page in a page table
a) helps avoid unnecessary writes on a paging device
b) helps maintain LRU information
c) allows only read on a page
d) none of the above
Answer »Answer: (a)
Question : 2
The term paging refers to
a) boosting up the priority of a process in multilevel of queues without feedback
b) gradually increasing the priority of jobs that wait in the system for a long time to remedy infinite blocking
c) keeping track of the time a page has been in memory for the purpose of LRU replacement
d) letting job reside in memory for a certain amount of time, so that the number of pages required can be estimated accurately
Answer »Answer: (b)
Question : 3
In virtual memory systems, dynamic address translation
a) is the hardware necessary to implement paging
b) stores pages at a specific location on disk
c) is useless when swapping is used
d) is the part of the operating system paging algorithm
Answer »Answer: (a)
Question : 4
The disk and tape devices are referred as
a) Block oriented I/O devices
b) Stream oriented I/O devices
c) Logical I/O devices
d) None of these
Answer »Answer: (a)
Question : 5
A disk scheduling algorithm in an operating system causes the disk arm to seek back and forth across the disk surface servicing all requests in its path, based on
a) First Come First Served
b) Shortest Seek Time First
c) Sean
d) None of these
Answer »Answer: (c)
Question : 6
A monitor program is a program that
a) interprets the interrupt calls
b) restores the status of the CPU after a function call
c) interprets the input from a keyboard and converts the input into its binary equivalent
d) checks the status of the I/O devices
Answer »Answer: (c)
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