List-I (Signal Scenario) A. Synchronous Signal (e.g., Div by Zero) B. Asynchronous Signal (e.g., Ctrl+C) C. Specific Signal Masking D. User-defined Signal handling List-II (OS Routing Action) Delivered strictly to the specific thread that caused the error Broadcasted across every active thread in the process Delivered only to a chosen thread designated to handle it Redirected via an explicit signal handler routine registered globally

A-1, B-2, C-3, D-4 Explanation: A. Synchronous Signal (e.g., Div by Zero) 1. Delivered strictly to the specific thread that caused the error Synchronous signals (jaise division by zero ya invalid memory access) usi execution thread se generate hote hain. Yeh strictly usi thread ko deliver hote hain jiss dwara error cause hua ho. B. Asynchronous Signal (e.g., Ctrl+C) 2. Broadcasted across every active thread in the process Asynchronous signals external events (jaise keyboard interrupt Ctrl+C ) dwara generate hote hain. Yeh signals pooray process ke saare active threads ko broadcast hote hain ya kisi non-blocked thread ko receive hote hain. C. Specific Signal Masking 3. Delivered only to a chosen thread designated to handle it Multiple threads apne individual signal mask set kar sakte hain. Jab baaki sabhi threads kisi sig

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

List-I (Signal Scenario)

A. Synchronous Signal (e.g., Div by Zero)

B. Asynchronous Signal (e.g., Ctrl+C)

C. Specific Signal Masking

D. User-defined Signal handling

List-II (OS Routing Action)

Delivered strictly to the specific thread that caused the error

Broadcasted across every active thread in the process

Delivered only to a chosen thread designated to handle it

Redirected via an explicit signal handler routine registered globally

Choose the correct answer: