Which statement best describes the purpose of having separate certified and working directories?

• A. It ensures impossible to save changes.
• B. It indicates the boot cfg location.
• C. It ensures only boot.cfg changed.
• D. It allows testing changes before committing.

Answer: (D)

The central idea is to keep experimental work separate from the trusted, deployed configurations so you can test safely before making permanent changes. The working directory acts as a draft space where you can modify files, run tests, and observe outcomes without touching the certified baseline. The certified directory holds validated, stable configurations that are considered ready for deployment. With this separation, you can explore and test changes—checking functionality, compatibility, and potential issues—without risking the production setup. Only after those tests pass would you promote or copy the changes into the certified area, ensuring that the system remains stable while updates are introduced in a controlled way. This is exactly what the approach aims to achieve: you test changes before committing them.