Linux Concurrency Kernels List-I (Linux Lock Type) A. Mutexes B. Spinlocks C. Reader-Writer Spinlocks D. Seqlocks List-II (Operational Implementation behavior) Sleep-locks; task yields CPU if the resource is unavailable Short busy-wait loops; unusable in code that can sleep/yield Allows multiple concurrent reading cores, but isolates writers Uses a sequence counter; readers retry if a writer increments it

A-1, B-2, C-3, D-4 Explanation: A. Mutexes -> 1. Sleep-locks; task yields CPU if the resource is unavailable Linux me Mutexes sleep-locks ki tarah kaam karte hain. Agar resource available nahi hota, to task CPU ko yield kar deta hai aur sleep state me chala jata hai. B. Spinlocks -> 2. Short busy-wait loops; unusable in code that can sleep/yield Spinlocks short busy-wait loops ka use karte hain. Ye aise code me use nahi kiye ja sakte jo sleep ya yield kar sake. C. Reader-Writer Spinlocks -> 3. Allows multiple concurrent reading cores, but isolates writers Reader-Writer Spinlocks multiple cores ko ek saath read karne ki permission dete hain, lekin writers ko isolated (exclusive access) rakhte hain. D. Seqlocks -> 4. Uses a sequence counter; readers retry if a writer increments it Seqlocks ek sequence counter ka use karte

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

Linux Concurrency Kernels

List-I (Linux Lock Type)

A. Mutexes

B. Spinlocks

C. Reader-Writer Spinlocks

D. Seqlocks

List-II (Operational Implementation behavior)

Sleep-locks; task yields CPU if the resource is unavailable
Short busy-wait loops; unusable in code that can sleep/yield
Allows multiple concurrent reading cores, but isolates writers
Uses a sequence counter; readers retry if a writer increments it

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