Final answer:
The key point about a client-server model is the division of tasks between servers, which provide services or resources, and clients, which request them. The complexity of such systems sometimes requires the use of powerful computers and standards like the ODD protocol for model descriptions.
Step-by-step explanation:
The key point about a client-server model is that it is a distributed approach where a server machine provides resources or services to one or more clients. Clients make requests to the server which processes these requests and returns the required information or results. This model is inherently based on the concept of dividing tasks between the providers of a resource or service, known as servers, and service requesters, known as clients.
Individual-based models (IBMs) are more complex and require powerful computers due to their ability to simulate complex systems with many interacting components. While IBMs offer detailed insights, they are harder to analyse, understand, and communicate compared to simpler models. The ODD (Overview, Design concepts, and Details) protocol was developed as a standard for model descriptions to alleviate these issues.