Operating System (OS)
A page fault

is an access to a page not currently in memory
is a reference to a page belonging to another program
is an error is a specific page
None of these
occurs when a program accesses a page of memory

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Operating System (OS)
A real time operating system is most likely to be used for which of the following task?

Ensuring that system clock works correctly on server
Controlling the fuel injection system of an automobile engines
Managing the access to system files in a laptop computers
Controlling access to a shared printer in a network

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Operating System (OS)
What is the method of handling deadlocks?

Use a protocol to ensure that the system will never enter a deadlock state
Allow the system to enter the deadlock state and then recover
All of these
Pretend that deadlocks never occur in the system

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Operating System (OS)
The disadvantages of "Compile and Go" loading scheme is (are):

it is very difficult to handle multiple segments, especially if the source programs are in different languages, and to produce orderly modular programs.
it is necessary to retranslate the user's program deck every time it is run.
All of these
None of these
a portion of memory is wasted because the core occupied by the assembler is unavailable to the object program.

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Operating System (OS)
What hole will allocates in "Worst-Fit" algorithm of memory management?

It allocates the largest hole from the available memory holes
It allocates the smallest hole from the available memory holes
It allocates the smaller hole than required memory hole
It allocates the exact same size memory hole

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