in CO and Architecture
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Brother what's your reason for option D. Mine was since nonmaskable interrupt are given to those events which are of extremely high priority which we cant ignore like power failure etc. So when that interrupt wil generate no other device will be serviced.
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brother those are two different catageories

1) An interrupt can Non-Maskable and Maskable

         every Maskable is either vectored or non-vectored

         every Non-Maskable is either vectored or non-vectored

2) An interrupt can vectored and non-vectored

         every vectored is either Maskable or Non-Maskable

         every non-vectored is either Maskable or Non-Maskable

 

Mine was since nonmaskable interrupt are given to those events which are of extremely high priority which we cant ignore like power failure etc. So when that interrupt wil generate no other device will be serviced.

yes, Mine also same 

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Yea... But they are asking about I/O device right
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