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Operating System (OS)

Operating System (OS)
The part of machine level instruction, which tells the central processor what has to be done, is

Operation code
Address
None of these
Locator
Flip-Flop

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Operating System (OS)
In which addressing mode the contents of a register specified in the instruction are first decremented, and then these contents are used as the effective address of the operands?

auto increment
indirect addressing
index addressing
auto decrement
None of these

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Operating System (OS)
Which is a permanent database in the general model of the compiler?

Literal Table
None of these
Source code
Identifier Table
Terminal Table

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Operating System (OS)
Which of the following is a program group?

Paint brush
Word pad
None of these
Accessories

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Operating System (OS)
To prevent the addition and deletion of files on a disk or tape we use

Create back up
Write protect
None of above
Format

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Operating System (OS)
Which of the following is an example of a real time operating system?

MS DOS
Windows XP
Process Control
Lynx

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