According to the troubleshooting methodology, which of the following steps will help a technician gather information about a network problem? (Select TWO).

According to the troubleshooting methodology, which of the following steps will help a technician gather information about a network problem? (Select TWO).
A . Test solutions.
B . Duplicate the problem
C . Establish a theory of probable cause
D . Question users
E . Implement preventive measures.
F . Document findings

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Answer: B,D