Operating System (OS)
Whenever you move a directory from one location to another

The directory is moved the source file is not moved
All files inside the directory are moved
All the subdirectory inside that directory are moved
Both A and B

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Operating System (OS)
The Register - to - Register (RR) instructions

have both their operands in the main store.
which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.
None of these
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also
All of these

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Operating System (OS)
Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because

None of these
they are partly in primary memory and partly on disk
they are available on magnetic tapes
they are memory resident
they are initially stored on disk

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Operating System (OS)
The advantage(s) inherent to using high level languages is (are)

A greater degree of machine independence
Improved debugging capability, and superior documentation
None of these
Fewer people, less management and shorter transition in learning time
All of these

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