多项选择题
A. Ethernet Private Line
B. Ethernet Wire Service
C. Ethernet Relay Service
D. Ethernet Multipoint Service
E. Ethernet Relay Multipoint Service
多项选择题 WhichthreeoftheseMetroEthernetservicesmaptoE-Lineservicesthataredefinedbythe MEF？（）
单项选择题 WhichoftheseisabenefitofusingNetworkAdmissionControlinsteadofCiscoIdentityBased NetworkingServices？（）
单项选择题 InwhichNASoperatingmodeareACLfilteringandbandwidththrottlingonlyprovidedduring postureassessment？（）