A Catalyst 2950 needs to be reconfigured. What steps will ensure that the old configuration is erased?（）
- A、Erase flash.
- B、Restart the switch.
- C、Delete the VLAN database.
- D、Erase the running configuration.
- E、Erase the startup configuration.
- F、Modify the configuration register.
正确答案:B,C,E
答案解析:有
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