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

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Operating System (OS)
Which, of the following, is true for testing and debugging?

All of these
Testing and debugging indicate the same thing
None of these
Testing checks for logical errors in the programs, while debugging is a process of correcting those errors in the program
Testing detects the syntax errors in the program while debugging corrects those errors in the program

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