What is the role of a router in a network?

What is the role of a router in a network?

• A. Transfers data between devices
• B. Stores computer addresses
• C. Copies all packets to all devices
• D. Analyzes each packet to determine destination

Answer: (A)

The key idea is how data moves across networks. A router sits at the boundary between networks and directs packets toward their destination, effectively transferring data from one device to another across different networks. It looks at the destination address in each packet and uses its routing information to send the packet to the next hop, continuing until it reaches the target. This is why this option fits best: it captures the fundamental role of a router—moving data between devices on separate networks. It doesn’t primarily store computer addresses (that’s not its main job), it doesn’t copy every packet to all devices (that would be broadcasting and inefficient), and while it does use addresses to decide where to send packets, the broader, simplest description is that it transfers data between devices across networks.

The key idea is how data moves across networks. A router sits at the boundary between networks and directs packets toward their destination, effectively transferring data from one device to another across different networks. It looks at the destination address in each packet and uses its routing information to send the packet to the next hop, continuing until it reaches the target.

This is why this option fits best: it captures the fundamental role of a router—moving data between devices on separate networks. It doesn’t primarily store computer addresses (that’s not its main job), it doesn’t copy every packet to all devices (that would be broadcasting and inefficient), and while it does use addresses to decide where to send packets, the broader, simplest description is that it transfers data between devices across networks.