Which device type plays a critical role in forwarding data only to the specified device?

Which device type plays a critical role in forwarding data only to the specified device?

• A. Router
• B. Hub
• C. Switch
• D. Repeater

Answer: (C)

A switch plays a critical role in forwarding data specifically to the intended device within a network. This device operates at the data link layer of the OSI model and utilizes MAC addresses to determine the correct destination for each data packet it receives. When data is sent to a switch, it processes the packet and looks up the MAC address of the destination device in its MAC address table. By doing so, it can intelligently direct the packet only to the specific port that corresponds with the destination device, rather than broadcasting it to all devices on the network. This targeted approach enhances the efficiency of the network by reducing unnecessary traffic and collisions, unlike devices such as a hub, which indiscriminately sends incoming data to all connected devices. Routers, while they do direct traffic efficiently across different networks, focus on forwarding data based on IP addresses rather than MAC addresses. Repeaters simply regenerate and amplify signals to extend the range of a network but do not perform any filtering or forwarding based on the devices involved. Therefore, the switch is recognized as the device that best fits the role of forwarding data only to the specified device.

A switch plays a critical role in forwarding data specifically to the intended device within a network. This device operates at the data link layer of the OSI model and utilizes MAC addresses to determine the correct destination for each data packet it receives. When data is sent to a switch, it processes the packet and looks up the MAC address of the destination device in its MAC address table. By doing so, it can intelligently direct the packet only to the specific port that corresponds with the destination device, rather than broadcasting it to all devices on the network.

This targeted approach enhances the efficiency of the network by reducing unnecessary traffic and collisions, unlike devices such as a hub, which indiscriminately sends incoming data to all connected devices. Routers, while they do direct traffic efficiently across different networks, focus on forwarding data based on IP addresses rather than MAC addresses. Repeaters simply regenerate and amplify signals to extend the range of a network but do not perform any filtering or forwarding based on the devices involved. Therefore, the switch is recognized as the device that best fits the role of forwarding data only to the specified device.