Operating System (OS)
Which of the following is not essential to shut down your computer?

Switch off monitor
Save all opened files
Cut off the power supply
Close all running applications

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

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

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

branches off to the interrupt service routine after completion of the current instruction
halts for a predetermined time
hands over control of address bus and data bus to the interrupting device
branches off to the interrupt service routine immediately
None of these

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