单项选择题
Which one of the following items may be added to a password stored in MD5 to make it more secure？（）
A.Ciphertext B.Salt C.Cryptotext D.Rainbow table
单项选择题 Whichitemisthegreatmajorityofsoftwarevulnerabilitiesthathavebeendiscovered？（）
单项选择题 Whichstatementistrueaboutvishing？（）
单项选择题 RefertoCiscoIOSZone-BasedPolicyFirewall，wherewilltheinspectionpolicybeapplied？（）
