A.PKI B.AH C.ESP D.PPP
A.安全參數(shù)索引(SPI) B.IP源地址 C.安全協(xié)議號(AH或ESP) D.IP目的地址
A.數(shù)據(jù)機密性(Confidentiality) B.數(shù)據(jù)完整性(Data Integrity) C.抗DDoS(Distributed Deny of Service) D.身份驗證(Data Authentication)