Operating System (OS)
Supervisor state is

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

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

a portion of memory is wasted because the core occupied by the assembler is unavailable to the object program.
None of these
All of these
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.

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Operating System (OS)
A page fault

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

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