Inner most layer of operating system which is always present in main memory is…
2021
Inner most layer of operating system which is always present in main memory is known as ______.
- A.
Hardware
- B.
User interface
- C.
Application program
- D.
Kernel
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Correct answer: D
The kernel is the core component of an operating system that resides permanently in main memory. It manages hardware resources and provides essential services for other software layers, making it the innermost layer.