Data collection is very critical for the on-site maintenance engineer, not only can understand and handle the fault well, but also provide a basis for future processing. What kind of information needs to be collected when the EMS/EFS/EGS plates are used for data collection? (Multiple choice)

Data collection is very critical for the on-site maintenance engineer, not only can understand and handle the fault well, but also provide a basis for future processing. What kind of information needs to be collected when the EMS/EFS/EGS plates are used for data collection? (Multiple choice)
A . Public basic data that requires feedback, such as version and other basic information
B . EPL/EPLn business issues require feedback data such as the number of VCTRUNK, etc.
C . Data required for EVPL/EVPLn service issues, such as test frame feedback, etc.
D . Special configuration issues require feedback data such as Qos, etc.

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Answer: ABCD