A.0 B.1 C.255 D.256
A.6to4 B.6over4 C.ISATAP D.6PE E.GRE
A. Both support normal and extended VLAN ranges. B. ISL is a Cisco proprietary encapsulation method and 802.1Q is an IEEE standard. C. ISL encapsulates the original frame. D. Both support native VLANs. E. 802.1Q does not encapsulate the original frame.