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Question

Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.

(i) Kernel

(ii) Interface

(iii) Nucleus

(iv) Compiler

Codes:

This question was previously asked in
MH SET 2025 Paper 2 Sociology Question Paper (15-Jun-2025)
The correct answer is

(i) and (iii) are correct

An operating system always has a small resident core that stays loaded in main memory throughout the working session and provides the most fundamental services such as process scheduling, memory management, device handling and inter-process communication.

This resident core is called the Kernel, and in older or alternative terminology it is also referred to as the Nucleus. Both terms describe the same central component of the OS.

Interface is a user-facing shell or GUI, not the resident core. Compiler is a language translation utility that is loaded only on demand and is not part of the OS core.

Hence, the two correct fillers are Kernel and Nucleus.

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