What characterizes an Ad Hoc Network?

An Ad Hoc Network is characterized by its ability to enable direct communication between wireless devices without the need for a centralized management structure or permanent installation infrastructure. In this type of network, devices communicate with one another based on a spontaneous connection, which allows for quick setup and flexibility. This is particularly useful in scenarios where a traditional network setup is impractical, such as in temporary situations like meetings, events, or outdoor activities where devices need to share data rapidly without the overhead of a centralized system.

The other options describe network types that involve infrastructure or centralized resource management, which contrasts sharply with the nature of an Ad Hoc Network.