Consider the following two lists : Which of the following is correct match ?
2022
Consider the following two lists :
Which of the following is correct match ?
- A.
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
- B.
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
- C.
(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
- D.
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
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Correct answer: D
Answer: Stack overflow → Internal interrupt; Timer → External interrupt; Invalid opcode → Machine check interrupt; Superior call → Software interrupt.
Stack overflow is an internal interrupt (exception) because it arises from erroneous program execution (e.g., excessive recursion or stack growth) and is handled by the processor as an exception.
Timer is an external interrupt since it is generated asynchronously by a hardware timer device outside the CPU.
Invalid opcode is detected by the CPU during instruction decode/execution and is treated as a machine-level fault in many architectures; such faults are classed as machine check interrupts.
Superior (supervisor) call is a software-generated interrupt used by a program to request privileged OS services, so it is a software interrupt.
Therefore the correct classification is: Stack overflow → Internal interrupt; Timer → External interrupt; Invalid opcode → Machine check interrupt; Superior call → Software interrupt.
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