A customer reports their mail can send emails but not receive them. A technician arrives on-site to troubleshoot the issue. Which of the following troubleshooting steps should the technician do FIRST?
A. Identify changes to the server
B. Establish a theory of probable cause
C. Escalate the problem to a manager
D. Perform a root cause analysis
Answer: B. Establish a theory of probable cause
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Answer the following statement true (T) or false (F)