单项选择题
A.A
B.B
C.C
D.D
单项选择题 WhichstatementcorrectlydescribesIPsecVPNbackuptechnology？（）
多项选择题 YouneedtoconfigureaGREtunnelonaIPSecrouter.WhenyouareusingtheSDMtoconfigureaGREtunneloverIPsec，whichtwoparametersarerequiredwhendefiningthetunnelinterfaceinformation？（）
多项选择题 Refer to the exhibit. Which two statements about the AAA configuration are true？（）
