单项选择题
A. Easy VPN
B. GRE tunneling
C. Virtual Tunnel Interfaces
D. Dynamic Multipoint VPN
E. Group Encrypted Transport VPN
单项选择题 Inabasee-Commercemoduledesign，whichroutingstatementiscorrect？（）
单项选择题 LafeyetteProductionsislookingforanewISPthathasimprovedavailability，load balancing，and catastropheprotection.WhichtypeofISPconnectivitysolutionwouldbebest？（）
单项选择题 WhichofthefollowingistheprimaryconsiderationtoscaleVPNs？（）