WhichofthesestatementsbestdescribesthemajordifferencebetweenanIPv4－compatibletunnelanda6to4tunnel?()A.AnIPv4-compatibletunnelisastatictunnel，butan6to4tunnelisasemiautomatictunnel.B.ThedeploymentofaIPv4-compatibletunnelrequiresaspecialcodeontheedgerouters，
题目
WhichofthesestatementsbestdescribesthemajordifferencebetweenanIPv4－compatibletunnelanda6to4tunnel?()
A.AnIPv4-compatibletunnelisastatictunnel，butan6to4tunnelisasemiautomatictunnel.
B.ThedeploymentofaIPv4-compatibletunnelrequiresaspecialcodeontheedgerouters，buta6to4tunneldoesnotrequireanyspecialcode.
C.AnIPv4-compatibletunnelistypicallyusedonlybetweentwoIPv6domains，buta6to4tunnelisusedtoconnecttoconnecttwoormoreIPv6domains.
D.ForanIPv4-compatibletunnel，theISPassignsonlyIPv4addressesforeachdomain，butfora6to4tunnel，theISPassignsonlyIPv6addressesforeachdomain.
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参考答案和解析
参考答案：C