Designing Cisco Network Service Architectures (ARCH, legacy) — Question 5

A network engineer is designing an access layer that requires all uplinks to be active. Furthermore, VLANs must span across the entire switch block. What design fulfills this requirement?

Answer options

• A. Layer 2 looped triangle
• B. Layer 2 looped square
• C. Layer 2 loop-free U
• D. Layer 2 loop-free inverted U

Correct answer: D

Explanation

The correct answer, D (Layer 2 loop-free inverted U), provides an active path for all uplinks while ensuring that VLANs can span across the entire switch block without creating loops. Options A and B introduce loops which can lead to broadcast storms, while C does not ensure all uplinks are active.