Multiple choice

Which of the following is not a layer of Unix operating system?

  1. Kernal

  2. Service

  3. Shell

  4. User application

  5. Application software
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

It does not belong to the layer of Unix operating system. An application software is not necessary to run our computer. It is used for extra features like image editing etc.

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