The following is the network parameter planning of an engineer’s network management server, among which planning is correct? (Multiple choice)

The following is the network parameter planning of an engineer’s network management server, among which planning is correct? (Multiple choice)
A . Network management server host name: Server123-
B. Stand-alone system (Windows) IP address planning: IP address: 129.9.1.1/255.255.255.0; gateway: 123.9.1.254
C. A network server with 2000 equivalent network elements, the planned bandwidth value for managing network elements is 3.02Mbit/s
D. For a network with 2,000 equivalent network elements, a collection period of 15 minutes, and 7 days of performance data retention, the planned performance database size is 80GB

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Answer: BCD