List-I (Scheduling Bound) A. Process-Contention Scope B. System-Contention Scope C. Pthreads API mapping D. PCS Environment List-II (Scope of Competition) User-level threads compete for execution time within the same process Kernel threads compete globally against all processes on the system Implements scope rules using allocation flags (PTHREAD_SCOPE_SYSTEM) Managed entirely by user-space libraries without direct kernel control

A-1, B-2, C-3, D-4 Explanation: A. Process-Contention Scope 1. User-level threads compete for execution time within the same process Process-Contention Scope (PCS) me user-level threads ek hi process ke andhar available Lightweight Process (LWP) ya execution time ke liye aapas me compete karte hain. B. System-Contention Scope 2. Kernel threads compete globally against all processes on the system System-Contention Scope (SCS) me kernel-level threads poore system me sabhi processes aur threads ke sath globally CPU execution time ke liye compete karte hain. C. Pthreads API mapping 3. Implements scope rules using allocation flags (PTHREAD_SCOPE_SYSTEM) POSIX Threads (Pthreads) API scheduling contention scope ko define karne ke liye specific flags ka use karti hai, jaise PTHREAD_SCOPE_SYSTEM (SCS ke liye) aur PTHREAD_SCOPE_PR

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

List-I (Scheduling Bound)

A. Process-Contention Scope

B. System-Contention Scope

C. Pthreads API mapping

D. PCS Environment

List-II (Scope of Competition)

User-level threads compete for execution time within the same process

Kernel threads compete globally against all processes on the system

Implements scope rules using allocation flags (PTHREAD_SCOPE_SYSTEM)

Managed entirely by user-space libraries without direct kernel control

Choose the correct answer: