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OPERATING SYSTEM (OS)

Operating System (OS)
The total time to prepare a disk drive mechanism for a block of data to be read from it is

latency plus seek time plus transmission time
latency plus transmission time
None of these
latency
latency plus seek time

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Operating System (OS)
Part of a program where the shared memory is accessed and which should be executed invisibly is called

directory
semaphores
mutual exclusion
None of these
critical section

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Operating System (OS)
Indicate which, of the following, is not true about Nassi-Shneiderman charts

These charts cannot represent CASE constructs
These charts are type of graphical design tool
These charts can represent three fundamental control structures
All of these
None of these

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Operating System (OS)
What is the name of the operating system that reads and reacts in terms of actual time.

Real time system
Time sharing system
Quick response system
None of these
Batch system

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Operating System (OS)
An incremental backup

uses more tapes
None of these
saves all files
should be done each month
saves only files that have recently changed

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