【导读】
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1. [多选题]The Ezonexam network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? (Choose two)
A. ARP
B. CDP
C. DHCP
D. DNS
E. ICMP
2. [单选题]哪个命令可以成功测试网络：()
A. Router>ping192.5.5.0
B. Routerping192.5.5.30
C. Router>ping192.5.5.256
D. Routerping192.5.5.255
