单项选择题
Which of the following technologies can be used as a means to isolate a host OS from some types of security threats？（）
A.Intrusion detection B.Virtualization C.Kiting D.Cloning
单项选择题 WhichofthefollowingdescribesastaticNAT？（）
单项选择题 WhichofthefollowingencryptionmethodsisoftenusedalongwithL2TP？（）
单项选择题 Whichofthefollowingspecifiesasetofconsistentrequirementsforaworkstationorserver？（）
