The correct answer is D.

Network load balancer (layer 3 and 4)
A network load balancer distributes traffic based on IP address and destination ports. It handles only layer 4 (TCP) traffic; it’s not built to handle anything at layer 7, such as content type, cookie data, custom headers, user location, or application behavior. A network load balancer is a context-less load distribution. It handles only the network-layer information contained within the packets.


Application load balancer (layer 7)
An application load balancer distributes traffic based on multiple variables, from the network layer to the application layer. An application load balancer is a context-aware load distribution that directs requests based on any single variable as easily as requests based on a combination of variables. Applications are load balanced based on their behaviour.

An application load balancer works on layer 7, so it supports both HTTP and HTTPS. It can distribute HTTP and HTTPS traffic based on host-based or path-based rules. It also has a configurable range of health check status codes. The following diagram shows a logical representation of an application load balancer in Oracle Cloud Infrastructure (OCI)....