Operating System (OS)
Which of the following is the allocation method of a disk space ?

All of the listed here
Indexed allocation
Linked allocation
Contiguous allocation

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Operating System (OS)
Which of the following statement is true.

All of these
Seek analysis is used for analysing control-unit busy problems.
The LRU algorithm pages out pages that have been used recently
Thrashing is a natural consequence of virtual memory systems.
None of these

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Operating System (OS)
Trojan-Horse programs

None of these
usually are immediately discovered
are legitimate programs that allow unauthorized access
are hidden programs that do not show up on the system
do not usually work

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