Which of the following are the FIRST actions to take when an administrator is troubleshooting aserver?（）A、Make one change at a time and test/confirm the change has resolved the problem.B、Verify full system functionality.C、Replicate the problem.D、Determine if a common element is causing multiple problems.E、Identify any changes to the server.
Which of the following are the FIRST actions to take when an administrator is troubleshooting aserver?（）
- A、Make one change at a time and test/confirm the change has resolved the problem.
- B、Verify full system functionality.
- C、Replicate the problem.
- D、Determine if a common element is causing multiple problems.
- E、Identify any changes to the server.
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