What port security configuration allows MAC addresses to be dynamically learned and added to the configuration on a switch?

What port security configuration allows MAC addresses to be dynamically learned and added to the configuration on a switch?

• A. Static secure MAC address
• B. Sticky secure MAC address
• C. Dynamic secure MAC address
• D. Permanent secure MAC address

Answer: (B)

Sticky secure MAC address configuration allows MAC addresses to be dynamically learned and added to the configuration on a switch. When you enable sticky MAC address learning on a switchport, the switch can learn the MAC addresses of the devices that connect to that port and retain these addresses even after a reboot. As a result, when a device with a new MAC address connects to that port again, the switch will not automatically allow it; the previously learned addresses will still be stored, providing a level of security by only allowing known devices. In contrast, static secure MAC addresses require manual configuration of each MAC address on the switch, while dynamic secure MAC addresses refer to those learned through the normal operations of the switch, but they are not saved after a reboot. Permanent secure MAC addresses are similar to static but indicate that the MAC address is retained even after a switch reboot without requiring a dynamic learning process. Thus, sticky secure MAC addresses uniquely combine dynamic learning with persistent storage of MAC addresses, making them ideal for scenarios where you want flexibility in additions while maintaining security.

Sticky secure MAC address configuration allows MAC addresses to be dynamically learned and added to the configuration on a switch. When you enable sticky MAC address learning on a switchport, the switch can learn the MAC addresses of the devices that connect to that port and retain these addresses even after a reboot. As a result, when a device with a new MAC address connects to that port again, the switch will not automatically allow it; the previously learned addresses will still be stored, providing a level of security by only allowing known devices.

In contrast, static secure MAC addresses require manual configuration of each MAC address on the switch, while dynamic secure MAC addresses refer to those learned through the normal operations of the switch, but they are not saved after a reboot. Permanent secure MAC addresses are similar to static but indicate that the MAC address is retained even after a switch reboot without requiring a dynamic learning process. Thus, sticky secure MAC addresses uniquely combine dynamic learning with persistent storage of MAC addresses, making them ideal for scenarios where you want flexibility in additions while maintaining security.