A.數(shù)據(jù)傳輸泄密 B.數(shù)據(jù)傳輸丟失 C.數(shù)據(jù)交換失敗 D.數(shù)據(jù)備份失敗
A.SSL B.IARA C.RA D.數(shù)字證書
A.X.500 B.X.509 C.X.519 D.X.505