CompTIA Network+ Exam Review

Answer - A - To restrict hosts from accessing the network if their MAC address is not approved, you should use the Port Security feature on the switch.

Key Takeaway: The Port Security feature on a switch stores the MAC address on a switch and allows only those MAC address to communicate on that port. If any other MAC address tries to communicate through the port, port security will disable the port. In the simplest form, Port Security requires an already-enabled switch port and the port-security Interface Mode command to be entered.