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Operating System (OS)

Operating System (OS)
Which is not an external command ?

Sys
None of the listed here
Edit
XCOPY

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Operating System (OS)
In which addressing mode the effective address of the operand is the contents of a register specified in the instruction and after accessing the operand, the contents of this register is incremented to point to the next item in the list?

auto increment
auto decrement
index addressing
None of these
indirect addressing

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

Write protect
Format
Create back up
None of above

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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?

None of these
auto decrement
index addressing
auto increment
indirect addressing

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Operating System (OS)
Which Operating System doesn't support long file names?

Windows NT
OS / 2
Windows 95
MS-DOS

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Operating System (OS)
Relocation bits used by relocating loader are specified (generated) by

Assembler or translator
Macro processor
Relocating loader itself
Linker
None of these

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