Which device is primarily used to connect multiple networks?

Which device is primarily used to connect multiple networks?

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

Answer: (B)

A router is primarily used to connect multiple networks, which is fundamental to its function in networking. Unlike switches that operate within a single network to manage data packets between devices on that network, routers facilitate communication between different networks, such as a local area network (LAN) and the internet. They determine the best path for data to travel, manage traffic between networks, and can provide features like network address translation (NAT) and firewall capabilities. While other devices play specific roles in networking—such as hubs which connect multiple devices within the same network segment, and modems which convert digital signals from a computer to analog for transmission over telephone lines—none serve the primary purpose of connecting distinct networks like a router does. This network connectivity and routing capability make routers essential components in both small-scale and large-scale networking environments.

A router is primarily used to connect multiple networks, which is fundamental to its function in networking. Unlike switches that operate within a single network to manage data packets between devices on that network, routers facilitate communication between different networks, such as a local area network (LAN) and the internet. They determine the best path for data to travel, manage traffic between networks, and can provide features like network address translation (NAT) and firewall capabilities.

While other devices play specific roles in networking—such as hubs which connect multiple devices within the same network segment, and modems which convert digital signals from a computer to analog for transmission over telephone lines—none serve the primary purpose of connecting distinct networks like a router does. This network connectivity and routing capability make routers essential components in both small-scale and large-scale networking environments.