For what purpose do devices need to communicate over a network?

Devices need to communicate over a network primarily to route packets to their destination. This is fundamental to how networking functions, as data is broken down into smaller units known as packets before being transmitted over the network. Each of these packets contains information about the source, destination, and the data being transmitted. Routers and switches work together to ensure that these packets are sent through the most efficient path to reach their intended recipient.

This routing process is critical for effective communication between devices, as it allows them to share resources, access information, and complete tasks that require connectivity. Without the ability to route packets accurately, devices would not be able to exchange data effectively, leading to failures in communication and functionality across the network.

In contrast, while storing data securely, running software applications, and analyzing traffic performance are important aspects of network management and usage, they are not the primary reason devices need to communicate over a network. Effective packet routing underpins all of these activities, demonstrating the essential role it plays in network communication.