A.Router(config)#password-encryption B.Router(config)#service password-encryption C.Router#service password-encryption D.Router# password-encryption
A.ipv6 host B.ipv6 unicast-routing C.ipv6 local D.ipv6 neighbor
A.complicated header B.plug-and-play C.no broadcasts D.checksums E.optional IPsec F.autoconfiguration