Operating System (OS)
A disk scheduling algorithm in an operating system causes the disk arm to move back and forth across the disk surface in order to service all requests in its path. This is a

Scan
None of these
FIFO
First come first served
Shortest Seek Time First (SSTE)

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Operating System (OS)
System generation:

varies in difficulty between systems
None of these
requires extensive tools to be understandable
is always quite simple
is always very difficult

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Operating System (OS)
A relocate program form is one which

cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.
None of these
can itself performs the relocation of its address-sensitive portions.
All of these
consists of a program and relevant information for its relocation.

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