A network engineer designing an access layer that requires all uplinks to be active, furthermore, VLANs must span across the entire switch block. Which two design fulfill this requirement?

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A network engineer designing an access layer that requires all uplinks to be active, furthermore, VLANs must span across the entire switch block. Which two design fulfill this requirement?

A. Layer 2 Flex Links
B. Layer 2 loop-free inverted
C. Layer 2 loop square
D. Layer 2 loop-free U

Correct Answer: BC