单选题A server has failed after a tested and scheduled change control has been implemented. Which of the following is the FIRST thing the server technician should do？（）APerform a root cause analysis.BEscalate the problem.CNotify stakeholders.DEstablish a plan of action.
单选题
A server has failed after a tested and scheduled change control has been implemented. Which of the following is the FIRST thing the server technician should do？（）
A
Perform a root cause analysis.
B
Escalate the problem.
C
Notify stakeholders.
D
Establish a plan of action.
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