Operating System (OS)
Memory management is :

not used in modern operating system
not used on multiprogramming systems
replaced with virtual memory on current systems
None of these
critical for even the simplest operating systems

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Operating System (OS)
What is the meaning of "Hibernate" in Windows XP/Windows 7?

Shutdown the Computer terminating all the running applications
Restart the Computer in hibernate mode
Restart the Computer in safe mode
Shutdown the Computer without closing the running applications

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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
it is very difficult to handle multiple segments, especially if the source programs are in different languages, and to produce orderly modular programs.
All of these
it is necessary to retranslate the user's program deck every time it is run.

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