问题:
A . Router C will use ICMP to inform Host 1 that Host 2 cannot be reached
B . Router C will use ICMP to inform Router B that Host 2 cannot be reached
C . Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached
D . Router C will send a Destination Unreachable message type
E . Router C will send a Router Selection message type
F . Router C will send a Source Quench message type
● 参考解析
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