A. IPv6 prefixes B. link-local addresses C. solicited node multicast addresses D. IPv6 prefixes and topology information
A. An IPv4-compatible tunnel is a static tunnel, but an 6to4 tunnel is a semiautomatic tunnel. B. The deployment of a IPv4-compatible tunnel requires a special code on the edge routers, but a 6to4 tunnel does not require any special code. C. An IPv4-compatible tunnel is typically used only between two IPv6 domains, but a 6to4 tunnel is used to connect to connect two or more IPv6 domains. D. For an IPv4-compatible tunnel, the ISP assigns only IPv4 addresses for each domain, but for a 6to4 tunnel, the ISP assigns only IPv6 addresses for each domain.
A.configure a hard-to-guess VTP domain name B.use a hard-to-guess VTP password C.use VTP transparent mode D.implement VTP version 3