Which three Layer 2 access designs have all of their uplinks in an active state？（）

A. Flex Links
B. loop free U
C. looped square
D. looped triangle
E. loop-tree inverted U

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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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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.

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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

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Which three Layer 2 access designs have all of their uplinks in an active state？ （）

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Which three Layer 2 access designs have all of their uplinks in an active state？（）