Which devices are known to use IP addresses to control network traffic?

The devices known to use IP addresses to control network traffic are routers and Layer 3 switches. Routers are fundamental networking devices that operate at Layer 3 (the network layer) of the OSI model. They analyze incoming IP packets, determine the best path for them across networks, and forward them to their destination based on their IP address.

Layer 3 switches also function at the network layer and provide similar capabilities as routers. They can make forwarding decisions based on IP addresses while also leveraging their abilities to switch within the local area network (LAN) at much higher speeds. This dual functionality enables them to manage traffic efficiently in a network that may require both high-speed switching for local devices and routing capabilities for connecting to remote networks.

In contrast, the other options consist of devices that primarily operate at lower layers of the OSI model. Access Points connect wireless clients to a wired network but do not typically use IP addresses for traffic control, as they primarily function at Layer 2. Hubs broadcast packets to all ports without any intelligence regarding IP addressing. Modems and repeaters primarily work at Layers 1 (physical layer) and 2 (data link layer), respectively, and do not engage in routing or switching based on IP addresses. Finally,