Operating System (OS)
Addressing modes

All of these
None of these
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.

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Operating System (OS)
The term "operating system" means

the way a computer operator works
conversion of high level language into machine code
None of these
a set of programs which controls computer working
the way a floppy disk drive operates

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Operating System (OS)
Identify false statement

You can find deleted files in recycle bin
You can right click and choose Empty Recycle Bin to clean it at once
You can increase free space of disk by sending files in recycle bin
You can restore any files in recycle bin if you ever need

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