Which device is primarily responsible for connecting multiple networks?

Which device is primarily responsible for connecting multiple networks?

• A. A hub
• B. A switch
• C. A router
• D. A modem

Answer: (C)

The device primarily responsible for connecting multiple networks is a router. Routers serve a critical function in networking by directing data packets between different networks. They analyze the destination IP addresses of data packets and determine the most efficient route for that information to travel. This ability to manage traffic between networks is what sets routers apart, enabling them to connect distinct local area networks (LANs) or wide area networks (WANs) and even route traffic over the internet. While devices like hubs and switches operate within a single network, they do not facilitate connections between different networks. Hubs simply transmit data to all ports, lacking the intelligence to direct traffic, while switches improve upon that by directing data to specific devices within the same network based on MAC addresses. Modems, on the other hand, are designed to convert digital signals to analog for transmission over phone lines or coaxial cables, and although they enable internet connectivity, they do not directly connect multiple networks as routers do. Thus, a router is the device that effectively bridges different networks, making it essential for network interoperability.

The device primarily responsible for connecting multiple networks is a router. Routers serve a critical function in networking by directing data packets between different networks. They analyze the destination IP addresses of data packets and determine the most efficient route for that information to travel. This ability to manage traffic between networks is what sets routers apart, enabling them to connect distinct local area networks (LANs) or wide area networks (WANs) and even route traffic over the internet.

While devices like hubs and switches operate within a single network, they do not facilitate connections between different networks. Hubs simply transmit data to all ports, lacking the intelligence to direct traffic, while switches improve upon that by directing data to specific devices within the same network based on MAC addresses. Modems, on the other hand, are designed to convert digital signals to analog for transmission over phone lines or coaxial cables, and although they enable internet connectivity, they do not directly connect multiple networks as routers do. Thus, a router is the device that effectively bridges different networks, making it essential for network interoperability.