Which three elements must be configured for a Load Balancer to accept incoming traffic?

For a Load Balancer to effectively accept incoming traffic, certain critical configurations need to be in place. The correct answer highlights the necessity of having a backend set with servers, a security list, and a listener, and here’s why each component is essential:

1. Backend Set with Servers: The backend set is fundamental as it defines the group of servers that will handle the incoming requests. This set specifies the instance pool or the servers that will process the traffic routed by the Load Balancer. Without a backend set configured, the Load Balancer would have no targets to direct traffic to, rendering it ineffective.

2. Security List: The security list is crucial in defining the network access controls to ensure that traffic can flow to and from the Load Balancer, as well as to the backend servers. Proper configuration of these rules enables the Load Balancer to accept incoming traffic and pass it along to the backend servers without hindrance. If the security list does not allow traffic on the required ports, the Load Balancer will not be able to function properly.

3. Listener: The listener is responsible for monitoring traffic on a specified port and protocol (e.g., HTTP, HTTPS) and for directing that traffic to the appropriate backend