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Operating System (OS)

Operating System (OS)
Underlined text, such as text and folder names is referred to as

Hyperlink
Source drive
None of these
Menu

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Operating System (OS)
Which is the layer of a computer system between the hardware and the user program

None
Operating system
Operating environment
System environment

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Operating System (OS)
Block caches or buffer caches are used

None of these
to handle interrupts
to improve disk performance
to speed up main memory read operation
to increase the capacity of the main memory

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Operating System (OS)
Which of the following is not a system tool ?

Doskey
Drive space
Disk defragment
Scandisk

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Operating System (OS)
Which of the following is true about pseudocode

An assembly language
A high-level language
None of these
A machine language
All of these

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Operating System (OS)
Supervisor state is

only allowed to the operating system
required to perform any I/O
never used
None of these
entered by programs when they enter the processor

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