单项选择题
A.A
B.B
C.C
D.D
单项选择题 PriortoapplyingSCREENoptionstodroptraffic，youwanttodeterminehowyourconfigurationwillaffect traffic.Whichmechanismwouldyouconfiguretoachievethisobjective？（）
单项选择题 WheredoyouconfigureSCREENoptions？（）
单项选择题 AnattackersendsalowrateofTCPSYNsegmentstohosts，hopingthatatleastoneportreplies.Which typeofanattackdoesthisscenariodescribe？（）
