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Which of the following troubleshooting methodology steps did the cloud engineer overlook?

A cloud engineer received a support call indicating web apps running on an IaaS server are unavailable.

The engineer took the following trouble-shooting steps:

– Hypothesized the server outage is considered to be the cause of the problem.

– Performed rollback of applied patches.

– Ensured all web apps are running correctly.

– Documented the incident.

Which of the following troubleshooting methodology steps did the cloud engineer overlook?
A . Establish the theory of probable cause.
B . Establish a plan of action and implement the solution.
C . Test the theory to determine the cause.
D . Verify system functionality.

Answer: C

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