List-I (Model Type) A. Many-to-One B. One-to-One C. Many-to-Many D. Two-Level Model List-II (Limitation or Vulnerability) High kernel thread resource cost limits max creation size A single blocking call stalls all other threads in that block Complex design; multiplexes user threads onto equal/fewer targets Combines M:M with a premium 1:1 bypass route for vital threads

A-2, B-1, C-3, D-4 Explanation: A. Many-to-One 2. A single blocking call stalls all other threads in that block Iss model me saare user threads ek hi kernel thread se map hote hain. Agar ek bhi user thread blocking system call karta hai, toh poora process (aur uske baaki threads) block ho jata hai. B. One-to-One 1. High kernel thread resource cost limits max creation size Har user thread ke liye ek separate kernel thread create karna padta hai. High overhead aur system resources consume hone ke karan user threads ki maximum limit par restriction lagti hai. C. Many-to-Many 3. Complex design; multiplexes user threads onto equal/fewer targets Isme multiple user threads ko equal ya fewer kernel threads ke sath multiplex kiya jata hai, jisse iska kernel implementation aur scheduling design complex ho jata hai. D. Two-Level Mo

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

List-I (Model Type)

A. Many-to-One

B. One-to-One

C. Many-to-Many

D. Two-Level Model

List-II (Limitation or Vulnerability)

High kernel thread resource cost limits max creation size

A single blocking call stalls all other threads in that block

Complex design; multiplexes user threads onto equal/fewer targets

Combines M:M with a premium 1:1 bypass route for vital threads

Choose the correct answer: