Which network structure provides direct connections from every device to every other device?

A mesh network is the correct answer because it offers a topology where each device (or node) is connected to every other device directly. This structure enables data to take multiple paths from source to destination, ensuring redundancy and reliability. If one connection fails, data can still find an alternative route through the other connected devices. This characteristic is particularly beneficial in environments requiring high availability and resilience, such as in military and telecommunications applications.

In contrast, other network topologies like star, tree, and ring networks do not provide this direct interconnectivity. A star network features a central hub that all devices connect to, which means devices can only communicate through the hub rather than directly with each other. A tree network combines multiple star networks into a hierarchical structure but still relies on central devices for communication and does not allow direct connections across all devices. A ring network connects devices in a circular structure, where each device communicates with two others, but again lacks direct inter-device connections, as data must travel around the ring to reach its destination. This distinction underscores the unique advantages of a mesh network in terms of connectivity and fault tolerance.