Question 18Asked in UGC NET Computer Science, December 2015 (Paper II & III, Selected Questions)
A CPU handles interrupt by executing interrupt service subroutine ................
ABy checking interrupt register after execution of each instruction
BBy checking interrupt register at the end of the fetch cycle
CWhenever an interrupt is registered
DBy checking interrupt register at regular time interval
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Correct answer: (A) By checking interrupt register after execution of each instruction
Explanation
A CPU handles interrupt by executing interrupt service subroutine by checking the interrupt register after finishing the executing of the current instruction.
From UGC NET Computer Science PYQ, December 2015 (Paper II & III, Selected Questions)