operating system Practice Questions Answers Test with Solutions & More Shortcuts

Question : 26

Thrashing

a) reduces page I/O

b) decreases the degree of multiprogramming

c) implies excessive page I/O

d) improve the system performance

Question : 27

An attached processor

a) is used one only a few computers

b) causes all processor to function equally

c) is more difficult to implement than a coprocessor

d) is used only for limited, specific functions

Question : 28

Which O/I are best method for allocating?

a) Contiguous

b) Linked

c) Index

d) All of the above

Question : 29

External fragmentation solved by which allocation?

a) contiguous allocation

b) linked allocation

c) index allocation

d) both B and C

Question : 30

The portion of the process scheduler in an operating system that dispatches processes is concerned with

a) activating suspended I/O-bound processes

b) temporarily suspending processes when CPU load is too great

c) assigning ready processes to the CPU

d) all of the above