Your GKE app must call a legacy REST service deployed in two GKE clusters in different regions. You need a resilient connection and must run health checks on a separate port. Which actions should you take? (Choose two.)

Traffic Director with sidecar proxies provides a robust service mesh solution for connecting services across multiple GKE clusters in different regions, offering advanced traffic management, load balancing, and resilience features like automatic failover. This setup allows for health checks to be performed on a separate port. When using sidecar proxies, the health checks originate from these proxies, not directly from the application or the Traffic Director control plane. Therefore, the legacy service firewall must be configured to permit traffic from the proxy IP ranges for health checks to succeed. A proxyless Traffic Director configuration is not suitable here because it requires the application to integrate directly with xDS APIs, which is unlikely for a "legacy REST service.