Which of the following best describes a bridge's function in RouterOS?

• A. It forwards frames at layer 2 within the same broadcast domain.
• B. It routes IP packets between networks.
• C. It assigns IP addresses dynamically.
• D. It filters traffic using firewall rules.

Answer: (C)

A bridge in RouterOS operates at Layer 2, joining multiple network interfaces into a single broadcast domain and forwarding frames based on MAC addresses learned from traffic on each port. This means devices connected to different ports can communicate as if they’re on the same switch, without routing IP packets between networks. The bridge doesn’t assign IP addresses—that’s the job of DHCP or static configuration. It also isn’t primarily about routing IP traffic between networks or filtering traffic with firewall rules; those are router and firewall functions, respectively. Because a bridge’s essential role is to forward frames at the data link layer within one broadcast domain, that description best captures its function.