Which network device operates at the Data Link layer and uses MAC addresses to forward frames only to the intended recipient's port, rather than broadcasting to all ports?

A Switch operates at the Data Link layer (Layer 2), maintaining a MAC address table so it can intelligently forward each incoming frame only to the port connected to its intended recipient, improving efficiency and reducing collisions. A Hub, by contrast, simply broadcasts incoming data to all connected ports regardless of the destination. A Router operates at the Network layer using IP addresses to route between different networks. A Repeater only regenerates and amplifies a signal, and a Gateway connects networks that use different protocols or architectures.