In a switch, if a port receives a broadcast frame, what happens?

In a switch, if a port receives a broadcast frame, what happens?

• A. The switch evaluates the frame and drops it
• B. The switch floods the frame out of all ports
• C. The switch forwards the frame to the destination MAC
• D. The switch creates a new MAC entry

Answer: (B)

When a switch receives a broadcast frame, it floods the frame out of all its ports, except for the port that originally received the frame. This occurs because broadcast frames are designed to be sent to all devices on the same local area network (LAN) segment. The switch does not know which specific device will receive the broadcast, so it sends the frame out to all connected devices to ensure it reaches its intended recipients. This flooding helps ensure that all devices on the network segment receive the broadcast message, which is critical for services that rely on broadcasting, such as ARP (Address Resolution Protocol). By broadcasting to all ports, the switch effectively ensures that no device on the network misses important information that may be communicated via broadcast. The design of switches promotes efficient handling of broadcast frames without requiring a specific address to deliver the data, making flooded broadcasts a fundamental part of LAN operations.

When a switch receives a broadcast frame, it floods the frame out of all its ports, except for the port that originally received the frame. This occurs because broadcast frames are designed to be sent to all devices on the same local area network (LAN) segment. The switch does not know which specific device will receive the broadcast, so it sends the frame out to all connected devices to ensure it reaches its intended recipients.

This flooding helps ensure that all devices on the network segment receive the broadcast message, which is critical for services that rely on broadcasting, such as ARP (Address Resolution Protocol). By broadcasting to all ports, the switch effectively ensures that no device on the network misses important information that may be communicated via broadcast.

The design of switches promotes efficient handling of broadcast frames without requiring a specific address to deliver the data, making flooded broadcasts a fundamental part of LAN operations.