Host 1 sends a request for a file to remote sever1. Which destination address does Host 1 place f the packet containing the request（）。A、The Mac address of the NIC in Sever1B、The IP address of Server 1.C、The MAC address of the s0/0/0 interface of router R2D、The IP address of the s0/0/0 interface of router R1E、The IP address of the Fa0/0 interface of router R1
Host 1 sends a request for a file to remote sever1. Which destination address does Host 1 place f the packet containing the request（）。
- A、The Mac address of the NIC in Sever1
- B、The IP address of Server 1.
- C、The MAC address of the s0/0/0 interface of router R2
- D、The IP address of the s0/0/0 interface of router R1
- E、The IP address of the Fa0/0 interface of router R1
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多选题When an IPv6 enabled host boots, it sends a router solicitation (RS) message. An IPv6 router responds with a router advertisement (RA). Which two items are c ontained in the RA?（）Aany route advertisements it has receivedBprefixes for the linkCkeepalive timersDIPv6 address for the hostErequest for the local host IP addressFlifetime of the prefix
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问答题将下列的环境变量表示的含义写出来 1.REMOTE_ADDR 2.REQUEST_METHOD 3.REMOTE_HOST