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单选题
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 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 layerB、 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 FHRPD、 Include a link between two Access switches to support summarization of routing information
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