List-I (OS Structure Design) A. Monolithic B. Microkernel C. Layered Approach D. Hybrid List-II (Architectural Highlight) Strictly ordered layers; layer N calls layer N-1 All services run in a single large kernel space Moves non-essential services into user space modules Combines speed of monolithic with security of microkernel

A-2, B-3, C-1, D-4 Explanation: A. Monolithic 2 : In a monolithic kernel structure, all operating system core services (such as memory management, file systems, process management, and drivers) run together inside a single large kernel space. B. Microkernel 3 : Moves non-essential services out of the kernel into user-space modules, leaving only core functionality (like IPC, basic memory management, and process scheduling) in kernel space. C. Layered Approach 1 : The OS is broken down into a series of strictly ordered levels or layers (from Layer 0 to Layer N), where each higher layer N only invokes operations provided by the lower layer N-1. D. Hybrid 4 : Combines concepts from both monolithic and microkernel designs to leverage the performance and speed of monolithic systems alongside the modularity and safety features

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

List-I (OS Structure Design)

A. Monolithic

B. Microkernel

C. Layered Approach

D. Hybrid

List-II (Architectural Highlight)

Strictly ordered layers; layer N calls layer N-1

All services run in a single large kernel space

Moves non-essential services into user space modules

Combines speed of monolithic with security of microkernel

Choose the correct answer: