多项选择题
A.Lower power consumption B.Lower maintenance cost C.Simplified configuration D.Deterministic performance E.Longer uptime
WiththeDSCPvaluefo"101110"，whatdoesthe"11"inbits1and2in...
单项选择题With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）
A.AF Class B.Drop Probability C.CS（Class Selector Value ） D.PHB （Per-Hop Behavior ） E.IP Precedence F.Queue Depth
SONET’sthreelayersare（）.A.SectionB.LineC.FrameD.PathE.D...
多项选择题SONET’s three layers are（）.
A.Section B.Line C.Frame D.Path E.DS1
WhichofthefollowingdescriptionsaboutIPspoofingiscorrect...
单项选择题Which of the following descriptions about IP spoofing is correct？（）
A.IP source address is forged B.IP destination address is forged C.IP TCP source port is forged D.IP TCP destination port is forged E.None of above
