Operating System (OS)
Backups should be done

as several incrementals, followed by an image copy
None of these
weekly for most installations
daily for most installations
as several image copies, followed by an incremental

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Operating System (OS)
All of the following are task performed by the operating system except

Controlling the access that application program has to the CPU
Performing housekeeping task like file compression and disk defragmentation
Provides an interface for user to interact with computer
Managing hardware on the computer

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Operating System (OS)
Thrashing

always occurs on large computers
None of these
is a natural consequence of virtual memory systems
can be caused by poor paging algorithms
can always be avoided by swapping

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Operating System (OS)
Which of the following refers to the associative memory?

the data are accessed sequentially
the address of the data is generated by the CPU
None of these
the address of the data is supplied by the users
there is no need for an address i.e. the data is used as an address

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