多项选择题
A.EtherChannel technology helps aggregate traffic grouping multiple，full-duplex point-to-point linkstogether
B.EtherChannel technology is based on the 802.1 IEEE stand
C.EtherChannel can aggregate up to 800 Mbps，8 Gbps，or Gbps of aggregate bandwidth for a Fast EtherChannel，Gigabit EtherChannel，or 10 Gigabit EtherChannel connection respectively
D.EtherChannel is defined for Rapid Spanning Tree for faster convergence
单项选择题 RFC3270describesDifferentiatedServices（Diff-Serv）overMulti-ProtocolLabelSwitching（MPLS）networks.WhichmodelaltersDifferentiatedServices（Diff-Serv）codepointssetindifferentDifferentiatedServices（Diff-Serv）domain？（）
多项选择题 Identifythedifferencesofoption10A，asopposedtooption10C，forinterASvpnofferings.Foroption10A（）.
单项选择题 WhichoptiondescribestheincorrectusageoftheLabelDistributionmethod？（）