<br>Host TestKing1 is trying to communicate with Host TestKing2. The e0 interface on TestKingC is down.<br>Which of the following are true? (Choose two)<br>A. TestKingC will use ICMP to inform Host 1 that Host 2 cannot be reached.<br>B. TestKingC will use ICMP to inform TestKingB that Host 2 cannot be reached.<br>C. TestKingC will use ICMP to inform Host 1, TestKingA, and TestKingB that Host 2 cannot be reached.<br>D. TestKingC will send a Destination Unreachable message type.<br>E. TestKingC will send a Router Selection message type.<br>F. TestKingC will send a Source Quench message type.<br>Answer: B, D<br>我觉得应该选A啊?<br>