Which of the following is the data that needs to be collected and saved in the event of a failure? (Multiple Choice)

Which of the following is the data that needs to be collected and saved in the event of a failure? (Multiple Choice)
A . Equipment alarms and performance events
B . Running status data of the NE and the board
C . Operation log of the network management
D . Configuration data of the NE and the board

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Answer: ABCD