单项选择题
Which of the following describes a static NAT？（）
A.A static NAT uses a one to many mapping. B.A static NAT uses a many to one mapping. C.A static NAT uses a many to many mapping. D.A static NAT uses a one to one mapping.
单项选择题 WhichofthefollowingencryptionmethodsisoftenusedalongwithL2TP？（）
单项选择题 Whichofthefollowingspecifiesasetofconsistentrequirementsforaworkstationorserver？（）
