AVIXA Recognized AV Technologist Test

Which device connects different types of networks?

1. Network interface card

2. Switch

3. Hub

4. Bridge

The correct answer is: Bridge

The device that connects different types of networks is a bridge. Bridges are designed to filter and forward data between different network segments, allowing them to interoperate even if they use different protocols or technologies. This functionality enables efficient communication and data transfer between disparate networks, whether they are based on different standards, such as Ethernet and Wi-Fi, or separate departmental networks within a larger organization. Bridges work at the data link layer (Layer 2) of the OSI model, helping to minimize collisions and enhance bandwidth in local area networks (LANs) by segmenting traffic. They can also operate at the network layer (Layer 3) when they perform functions such as protocol conversion, thus facilitating communication even across different network types. In contrast, devices like network interface cards, switches, and hubs serve different roles. Network interface cards are used to connect individual computers to a network. Switches manage data traffic within the same network by directing packets to their specific destination while keeping traffic segregated for efficiency. Hubs are basic connectivity devices that connect multiple computers in a network but do not manage traffic effectively, sending incoming data to all ports, which can lead to congestion. Thus, while each device serves an important role, the bridge is uniquely tasked with connecting