By default, how long will a dynamic MAC address remain in the MAC address table when there is no activity?

By default, how long will a dynamic MAC address remain in the MAC address table when there is no activity?

• A. 3 minutes
• B. 5 minutes
• C. 10 minutes
• D. 15 minutes

Answer: (B)

A dynamic MAC address will remain in the MAC address table for 5 minutes by default if there is no network activity associated with that address. This timeout period is designed to ensure that the MAC address table is refreshed regularly, allowing the switch to learn new addresses and remove those that are no longer in use. When a device communicates on the network, its MAC address is added to the switch’s MAC address table, which optimizes the switching process. However, if the device is inactive, the switch won't receive any frames to maintain the entry. After 5 minutes of inactivity, the entry times out and is removed from the table to free up resources for new entries. This helps maintain efficient operation of the switch and allows it to adapt to changes in the network topology.

A dynamic MAC address will remain in the MAC address table for 5 minutes by default if there is no network activity associated with that address. This timeout period is designed to ensure that the MAC address table is refreshed regularly, allowing the switch to learn new addresses and remove those that are no longer in use.

When a device communicates on the network, its MAC address is added to the switch’s MAC address table, which optimizes the switching process. However, if the device is inactive, the switch won't receive any frames to maintain the entry. After 5 minutes of inactivity, the entry times out and is removed from the table to free up resources for new entries. This helps maintain efficient operation of the switch and allows it to adapt to changes in the network topology.