单项选择题
A.8 B.16 C.24 D.32
A.SYN Flooding攻击 B.DDoS攻击 C.Ping of Death攻击 D.Land攻击
A.set spantree portfast 3/2 enable B.set spantree backbonefast enable C.set spantree uplinkfast enable D.set spantree portfast bpdu-filter enable