What characterizes a Fat Client in computing?

A Fat Client is characterized by a client-centric model where the software is fully installed on each client device. This means that the client has the necessary processing power, storage, and resources to run applications independently, without relying heavily on a server for computation. As a result, Fat Clients can perform complex tasks, manage their own data, and provide a richer user experience by handling more processing on the client side.

The motivation behind using Fat Clients typically includes enhanced performance for resource-intensive applications, greater functionality during offline mode, and reduced latency since actions can often be performed locally without constant server communications.

In contrast to this, the other options describe different computing architectures. A thin client, for example, relies on a server for most processing and generally has less local capability. The web-based model mentioned does not require installations and would typically be considered a thin client approach. Lastly, a mobile application that functions offline may have aspects of a Fat Client, but it specifically targets mobile devices and does not encompass the full range of capabilities typically associated with a traditional Fat Client in computing. Thus, the defining characteristic that accurately describes a Fat Client is the complete installation of software on each client device, allowing for independent operation.