The RSTP protocol provides a variety of protection functions. For example, when the edge terminal port is configured in the protection state, the processing method of the edge port after receiving the BPDU message is:

The RSTP protocol provides a variety of protection functions. For example, when the edge terminal port is configured in the protection state, the processing method of the edge port after receiving the BPDU message is:
A . Forward BPDU messages as required
B .  Obtain relevant information after the BPDU message
C .  Close the port
D .   Directly discard the BPDUmessage

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Answer: C