You have an Azure Load Balancer (LB2) with backend pools shown in the exhibit; VM scale set VMSS1 exists but LB2 is not sending traffic to all VMSS1 instances. What two actions will ensure LB2 distributes traffic to every instance in VMSS1? (Choose two.)

To ensure LB2 distributes traffic to every instance in VMSS1, you need to configure both a load-balancing rule and a health probe. A load-balancing rule defines how incoming traffic is distributed to the backend pool instances, specifying the frontend IP configuration, ports, and the backend pool to use. Without a rule, the load balancer doesn't know which traffic to direct to VMSS1. A health probe monitors the health of the backend instances. If an instance is deemed unhealthy, the load balancer stops sending new connections to it. If no health probe is configured, the load balancer might not accurately assess instance health, potentially leading to traffic not being sent to all available instances, or sending traffic to unhealthy ones. Adding a network interface to VMSS1 is incorrect because VMSS instances already have network interfaces. Assigning a public IP address to each VMSS1 instance is incorrect as a public IP is typically assigned to the load balancer's frontend, not individual backend instances, for this scenario.