A Cloud Engineer Received a Support Call Indicating Web Apps

Multiple Choice

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.