List-I (Interrupt Aspect) A. Polling B. Vectored Interrupt C. Interrupt Service Routine D. Non-Maskable Interrupt List-II (System Resolution) Fast, automatic jump to a dedicated memory routing table Software loop queries every device sequentially to find source Code block executed to clear specific hardware requests Critical hardware signal that cannot be delayed by the CPU

A-2, B-1, C-3, D-4 Explanation: A. Polling -> 2: In polling, the CPU runs a software loop to sequentially query or check each I/O device to identify which one raised the interrupt request. B. Vectored Interrupt -> 1: In a vectored interrupt system, the interrupting device provides an interrupt vector (address or index) that allows the CPU to immediately jump to the corresponding address in an Interrupt Vector Table (IVT). C. Interrupt Service Routine -> 3: An Interrupt Service Routine (ISR) is the specific block of code (handler) executed by the CPU to service and handle hardware requests. D. Non-Maskable Interrupt -> 4: A Non-Maskable Interrupt (NMI) is a high-priority hardware interrupt signal (such as power failure or memory corruption) that the CPU cannot ignore, disable, or delay.

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

List-I (Interrupt Aspect)

A. Polling

B. Vectored Interrupt

C. Interrupt Service Routine

D. Non-Maskable Interrupt

List-II (System Resolution)

Fast, automatic jump to a dedicated memory routing table

Software loop queries every device sequentially to find source

Code block executed to clear specific hardware requests

Critical hardware signal that cannot be delayed by the CPU

Choose the correct answer: