多项选择题
Which two of these are characteristics of MPLS VPNs?（）
A. Layer 3 MPLS VPNs can forward only IP packets
B. Layer 2 MPLS VPNs can forward any network protocol
C. MPLS label paths are automatically formed based on Layer 2 frames
D. Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames
E. In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies
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相关考题
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单项选择题
Which of these technologies is characterized as being a multipoint Layer 2 VPN that connects two or more customer devices using Ethernet bridging techniques?（）
A.DPT
B.MPLS
C.VPLS
D.CWDM
E. DWDM
F. SONET/SDH -
多项选择题
Which two of these are characteristics of Metro Ethernet? （）
A. class of service
B. bandwidth profiles
C. user-network interface
D. Ethernet LAN circuit attributes
E. Ethernet virtual circuit attributes -
多项选择题
Which two of these Metro Internet services map to E-LAN services that are defined by the MEF?（）
A. Ethernet Private Line
B. Ethernet Wire Service
C. Ethernet Relay Service
D. Ethernet Multipoint Service
E. Ethernet Relay Multipoint Service
