A.172.16.36.0
B.172.16.48.0
C.172.16.64.0
D.172.16.0.0

A、CDP
B、HSRP
C、TFTP
D、TELNET

A.127.0.0.1
B.192.168.0.5
C.223.0.0.1
D.224.0.0.5
E.255.255.255.255

A.RIP
B.BGP
C.OSPF
D.EIGRP

A.ARP
B.FTP
C.RARP
D.ICMP
E.IGMP