Which component of a network primarily interacts with users?

The correct answer is endpoint devices because they are the primary means through which users access and interact with the network. Endpoint devices include computers, smartphones, tablets, and other devices that allow users to send and receive data, access applications, and communicate over the network. These devices serve as the interface between the user and the various services provided by the network.

In contrast, while switches and routers are essential network components that manage data traffic and facilitate connectivity, they operate in the background and do not directly engage with users. A switch connects devices within a local area network, directing data packets to their intended destinations, whereas a router connects multiple networks and manages traffic between them, enabling communication between devices on different networks.

Firewalls serve a critical security purpose by monitoring and controlling incoming and outgoing network traffic based on predetermined security rules. However, they also do not have direct interaction with users. Their role is to protect networks from unauthorized access and potential threats, ensuring secure operations but not functioning as user interface devices.

Thus, endpoint devices are the correct choice, as they embody the user's direct engagement with the network infrastructure.