多項(xiàng)選擇題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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2.多項(xiàng)選擇題Which two statements about the use of VLANs to segment a network are true?()

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5.多項(xiàng)選擇題Which two benefits are provided by creating VLANs?()

A. added security
B. dedicated bandwidth
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