What is the role of a digital bridge in networking?

The role of a digital bridge in networking is to connect two or more network segments, allowing them to communicate effectively. A digital bridge operates at the data link layer of the OSI model, where it manages data traffic between network segments, making decisions about whether to forward or filter frames based on the MAC addresses. This functionality is essential for creating larger networks, as it helps to reduce collisions and increase the overall efficiency of data transmission throughout the interconnected segments.

In contrast, other options describe different networking equipment and roles. Amplifying signal strength is typically done by repeaters or amplifiers, not bridges. Converting analog signals to digital is the primary function of a modem, which translates data formats rather than connecting segments. Filtering out unwanted frequencies is a characteristic associated with filters or certain networking devices such as switches that may manage traffic, but it does not describe the primary function of a digital bridge. Therefore, connecting network segments is the key function that defines the role of a digital bridge.