Which device in a data center connects multiple devices and manages data traffic?

In a data center, the network switch is crucial for connecting multiple devices, such as servers, storage units, and networking equipment, while efficiently managing the data traffic between them. Unlike simpler devices, the network switch operates at the data link layer (Layer 2) of the OSI model and uses MAC addresses to forward data packets only to the specific device intended to receive them. This targeted data transmission enhances network efficiency and reduces unnecessary traffic, as opposed to broadcasting data to all connected devices.

The design of network switches allows them to handle numerous simultaneous connections, which is important in a data center environment where many devices interact and require quick communication. Their ability to segment networks into virtual LANs (VLANs) further contributes to optimized performance and enhanced security by isolating traffic within designated groups.

In contrast, routers, while they do connect devices and manage traffic, primarily operate at the network layer (Layer 3) and are more focused on directing data between different networks rather than managing traffic within a single local area network (LAN). Firewalls serve a different primary function, focusing on monitoring and controlling incoming and outgoing network traffic based on security rules. Hubs, being more basic forms of connectivity, operate by broadcasting data to all devices regardless of the intended