多选题Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true? （）ARouter C will use ICMP to inform Host 1 that Host 2 cannot be reached.BRouter C will use ICMP to inform Router B that Host 2 cannot be reached.CRouter C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.DRouter C will send a Destination Unreachable message type.ERouter C will send a Router Selection message type.FRouter C will send a Source Quench message type.
多选题
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true? （）
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.
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