单项选择题
When an MPLS Layer 2 VPN runs in the hub-and-spoke model， where is QoS implemented？（）
A.hub and spoke
B.PE
C.CE
D.hub
E.spoke
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相关考题
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多项选择题
Allsecuredomainrouters（SDRs）havesharedattributeandresources.WhichthreeresourcesaresharedallSDRs？（）
A.privilege-level configuration
B.fabric cards
C.SNMP traps
D.admin- level configuration
E.exec- level configuration -
单项选择题
WhichstatementaboutVPLSistrue？（）
A.All CE devices emulate a bridge
B.All provider devices emulate a bridge
C.Hierarchical VPLS reduces signaling overhead
D.Each PE device emulates a bridge
E.Each CE device emulates a bridge -
单项选择题
Whatmethodofstreaminglivevideoistheleasttaxingonbandwidthinalargeenterpriseenvironment？（）
A.TCP
B.UDP
C.HTTP
D.Multicast
