單項選擇題Which of the following is true concerning best design practices at the switched Access layer of thetraditional layer2 Enterprise Campus Network?()

A. Cisco NSF with SSO and redundant supervisors has the most impact on the campus in theAccess layer
B. Provides host-level redundancy by connecting each end device to 2 separate Access switches 
C. Offer default gateway redundancy by using dual connections from Access switches toredundant Distribution layer switches using a FHRP
D. Include a link between two Access switches to support summarization of routing information


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1.單項選擇題Which of these recommendations is most appropriate for the core layer in the Cisco Campus Architecture?()

A. Utilize Layer 3 switching
B. Utilize software accelerated services
C. Aggregate end users and support a feature-rich environment
D. Perform packet manipulation and filtering at the core layer
E. Use redundant point to-point Layer 2 interconnections when where is a link or node failure.

2.單項選擇題There are 3 steps to confirm whether a range of IP address can be summarized. When of thefollowing is used in each of these 3 steps?()

A. The first number in the contiguous block of addresses
B. The last number in the contiguous block of addresses
C. The size of the contiguous block of addresses
D. The subnet mask of the original network address

3.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

4.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.

5.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