What function does a router perform in a network?

• A. Monitors network traffic
• B. Directs data between networks
• C. Stores backup copies of files
• D. Transmits television signals

Answer: (B)

A router primarily functions to direct data packets between different networks. This means that when data needs to travel from one network to another—such as from a home network to the internet—the router makes decisions about the best path for that data to take based on various factors like traffic conditions, network layouts, and routing protocols. This routing capability is crucial for ensuring that data reaches its intended destination efficiently and accurately.

Additionally, routers can connect multiple devices within a local network and manage traffic between them, ensuring that devices can communicate with both each other and the outside world. They also often include features for managing security, such as firewalls, and may provide wireless connectivity. This direct data management function distinguishes routers from other devices, such as monitors, storage solutions, or television transmission devices, which serve entirely different purposes in a technology ecosystem.