Operating System (OS)
Sleep is a good mode to use because

It consumes low battery when you start it again
It makes computer fresh after it wakes up
All of the listed here
It saves power which in true is saving money

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Operating System (OS)
The advantage of a command processor running only built-in commands is:

the command set being common across different hardware configurations
the processing is much faster than would other-wise be the case when user defined commands are used
flexibility to the users in running lists of commands by simply collecting them in named batch command files
None of these
users can create system programs and run them as commands

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Operating System (OS)
Addressing modes

are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
defines the fundamental method of determining effective operand addresses
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
All of these
None of these

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Operating System (OS)
Which of the following is not true about documentation?

None of these
All of these
Documentation gives better understanding of the problem
Documentation, of a system, should be as clear and direct as possible
Documentation increases the maintenance time and cost

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Operating System (OS)
Memory management is :

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

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