On receiving an interrupt from an I/O device,the CPU
CPU checks the status bit of interrupt at the completion of each current instruction running when there is a interrupt it service the interrupt using ISR.
so OPTION B)Branches off to the interrupt service routine after completion of the current instruction
ans is (b)
An interrupt service routine (ISR) is a software routine that hardware invokes in response to an interrupt. ISRs examine an interrupt and determine how to handle it. ISRs handle the interrupt, and then return a logical interrupt value.
Branches off to the interrupt service routine after completion of the current instructio