多选题A 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? （）AARPBCDPCDHCPDDNSEICMP
多选题
A 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? （）
A
ARP
B
CDP
C
DHCP
D
DNS
E
ICMP
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