Which networking device is responsible for forwarding data packets between networks?

Which networking device is responsible for forwarding data packets between networks?

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

Answer: (C)

The router is the networking device specifically designed to forward data packets between different networks. It operates at the network layer of the OSI model and uses routing tables to determine the best path for transmitting data from a source to a destination across interconnected networks. This capability allows routers to effectively manage traffic and ensure that packets reach their intended destinations, even if those destinations are on separate networks. Unlike other devices, such as hubs, switches, and modems, routers engage primarily in directing traffic rather than merely connecting devices or converting signals. Hubs, for instance, operate at a lower level and simply transmit incoming data packets to all other ports without any filtering. Switches, while more intelligent than hubs, work within a single network and are responsible for directing data within that local area network, rather than between different networks. Modems, on the other hand, are used for modulating and demodulating signals for transmitting data over telephone lines or cable systems and do not perform the packet routing functions that routers do. Therefore, the router’s ability to assess and determine the best routes for data packets makes it the essential device for inter-network communication.

The router is the networking device specifically designed to forward data packets between different networks. It operates at the network layer of the OSI model and uses routing tables to determine the best path for transmitting data from a source to a destination across interconnected networks. This capability allows routers to effectively manage traffic and ensure that packets reach their intended destinations, even if those destinations are on separate networks.

Unlike other devices, such as hubs, switches, and modems, routers engage primarily in directing traffic rather than merely connecting devices or converting signals. Hubs, for instance, operate at a lower level and simply transmit incoming data packets to all other ports without any filtering. Switches, while more intelligent than hubs, work within a single network and are responsible for directing data within that local area network, rather than between different networks. Modems, on the other hand, are used for modulating and demodulating signals for transmitting data over telephone lines or cable systems and do not perform the packet routing functions that routers do.

Therefore, the router’s ability to assess and determine the best routes for data packets makes it the essential device for inter-network communication.