多項選擇題Which two restrictions must the Enterprise Campus network designer consider when evaluatingWAN connectivity options？ （）

A. OSPF over multicast EMS or VPLS network may not have consistent broadcast or multicastperformance
B. IP multicast is not supported over Lover 3 MPLS VPN； instead a Layer 2 MPLS WN must beutilized with service provider support
C. QoS requirements with MPLS-VPN must be implemented by the service provider
D. Hierarchical VPLS designs are the least scalable
E. IGMP snooping is not on option with VPLS or EMS； instead administrative scoping or allowingsufficient bandwidth for unnecessary multicast traffic at the edge links is required


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1.單項選擇題Which technology is an example of the need for a designer to clearly define features and designedperformance when designing advanced WAN services with a service provider？（）

A. FHRP to remote branches.
B. Layer 3 MPLS VPNs routing.
C. Control protocols （for example Spanning Tree Protocol） for a Layer 3 MPLS service.
D. Intrusion prevention， QoS， and stateful firewall support network wide.

2.多項選擇題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. MPL S 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

3.單項選擇題Which virtualization technology allows multiple physical devices to be combined into a singlelogical device？（）

A. device visualization
B. device clustering
C. server visualization
D. network visualization

4.多項選擇題When designing the IP routing for the Enterprise Campus network， which of these following twoiBGB considerations should be taken into account？（）

A. iBGB dual horning with different iSPs puts the Enterprise at the risk of becoming a transitnetwork
B. iBGP requires a full mesh of eBGP peers
C. Routers will not advertise iBGP learned routers to other iBGP peers.
D. The use of route reflections or Confederation eliminate any full mesh requirement while helpingto scale iBGP
E. iGBP peers do not add any information to the AS path