【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]配置路由器时，封装PPP协议的命令是：()
A. encap ppp
B. ppp
C. group ppp
D. int ppp
3. [多选题]在配置帧中继子接口时，在物理接口上应该配置的内容是：()
A. 配置IP地址
B. 封装帧中继协议
C. 指定子接口类型
D. 设定子接口
E. 配置密码
