【单选题】
AA018  内燃机车的辅助装置包括()部分。
A、2
B、5
C、7
D、9
A、2
B、5
C、7
D、9
A、Port security is implemented on the fa0/1 interface. B、MAC address 0000.00aa.aaaa does not need to be learned by this switch. C、Only MAC address 0000.00aa.aaaa can source frames on the fa0/1 segment. D、Frames with a Layer 2 source address of 0000.00aa.aaaa will be forwarded out fa0/1. E、MAC address 0000.00aa.aaaa will be listed in the MAC address table for interface fa0/1 only.