A new version of the operating system is being planned for installation into your department’s production environment. W

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A new version of the operating system is being planned
for installation into your department’s production environment.
What sort of testing would you recommend is done before your
department goes live with the new version? Identify each level or
type of testing and describe what is tested. Explain the rationale
for selecting and performing each level (type) of testing. Do not
confuse testing methodology with testing levels or type. You may
mention testing methods as part of your answer if you feel this is
important, however the focus of the question is on testing
levels.
Each testing level (type) you list should include a
description of why this is important when installing a new
operating system.
Answer: