【多选题】
Which two protocols use UDP as a transport protocol by default?()
A、Telnet
B、ICMP
C、DHCP
D、RIP
A、Telnet
B、ICMP
C、DHCP
D、RIP
A、AH provides data integrity. B、AH is identified by IP protocol 50. C、AH is identified by IP protocol 51. D、AH cannot work in conjunction with ESP