Which of the following is true concerning best design practices at the switched Access layer of the traditional layer2 Enterprise Campus Network?

A.
Cisco NSF with SSO and redundant supervisors has the most impact on the campus in the Access 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 to redundant Distribution layer switches using a FHRP

D.
Include a link between two Access switches to support summarization of routing information

Explanation: