A proposed Interconnect design uses one physical link and one attachment, while the application requires resilience to a single connection failure. Which approach best fits?

1. Review dynamic routing mode and regional applicability of learned routes.
2. Add the documented redundant connections and attachments for the required availability topology.
3. Evaluate Cross-Cloud Interconnect and its supported locations and provider connections.
4. Evaluate Network Connectivity Center with suitable hub and spoke resources.