Which device best fits the term gateway in networking as translator?

• A. Router
• B. Gateway
• C. Switch
• D. Bridge

Answer: (B)

The main idea here is that a gateway acts as a translator between different networks. A gateway is the device that connects networks that don’t share the same protocols or data formats and can perform the translation so information from one side can be understood on the other. In practice, this means protocol conversion, data formatting adjustments, or address mapping to enable communication across diverse network environments.

That’s why the gateway is the best fit for the role described. A router’s job is to move packets between networks using IP routing; it doesn’t inherently translate protocols or formats between different networks. A switch concentrates on forwarding frames within a single local area network based on MAC addresses, not on bridging dissimilar networks. A bridge links similar network segments at Layer 2 and also doesn’t perform cross-network translation. So the translator function points squarely to the gateway.