Which of the following statements is true with reference to an interrupt…
2025
Which of the following statements is true with reference to an interrupt occurred?
Answer: B. CPU completes the execution of current instruction. — When a hardware interrupt occurs, the processor completes the instruction currently being executed before branching to the Interrupt Service Routine (ISR).…
- A.
CPU immediately jumps to a new process without completing the current instruction.
- B.
CPU completes the execution of current instruction.
- C.
CPU completes execution of all instructions in current process before jumping to a new process.
- D.
None of these
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Correct answer: B
When a hardware interrupt occurs, the processor completes the instruction currently being executed before branching to the Interrupt Service Routine (ISR). This ensures system stability and data integrity. Therefore, the CPU does not abandon an instruction mid-execution.