What devices connect networks and can create subnets to isolate broadcast domains?

Routers are crucial devices in networking that connect multiple networks and facilitate communication between them. They play a significant role in managing traffic between different subnets, which are subdivisions of a larger network. By creating subnets, routers help isolate broadcast domains, meaning that broadcast messages sent within one subnet do not propagate to others. This isolation helps to reduce network congestion and enhances security by limiting the scope of broadcasts.

In essence, routers utilize IP addresses to determine the best path for data packets to travel across interconnected networks and to different subnets. This capability of routing traffic and managing different network segments is what makes routers essential for building efficient and effective network architectures.