What device logically separates a single network into multiple segments or collision domains in Ethernet networks?

What device logically separates a single network into multiple segments or collision domains in Ethernet networks?

• A. Bridge
• B. Switch
• C. Router
• D. Hub

Answer: (A)

Separating a single Ethernet network into multiple collision domains is accomplished by devices that segment traffic between different network segments. A bridge connects two or more segments and uses a MAC address table to forward frames only to the segment where the destination resides, so each connected segment effectively becomes its own collision domain. This reduces contention because devices on one side don’t contend with devices on the other side. A hub lacks this capability and simply repeats signals to all ports, keeping one shared collision domain. A router operates at a higher level and also separates broadcast domains, while switches (modern bridges with more ports and speed) perform the same collision-domain segmentation across multiple ports.

Separating a single Ethernet network into multiple collision domains is accomplished by devices that segment traffic between different network segments. A bridge connects two or more segments and uses a MAC address table to forward frames only to the segment where the destination resides, so each connected segment effectively becomes its own collision domain. This reduces contention because devices on one side don’t contend with devices on the other side. A hub lacks this capability and simply repeats signals to all ports, keeping one shared collision domain. A router operates at a higher level and also separates broadcast domains, while switches (modern bridges with more ports and speed) perform the same collision-domain segmentation across multiple ports.