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多項(xiàng)選擇題

Which of the following are the FIRST actions to take when an administrator is troubleshooting a server?()

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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