Answer: B - To be able to restrict other servers using the designated port, configure the MAC address of the server as a static entry associated with port Fa0/1 and reject traffic with a source MAC address other than that of the server.
Key Takeaway: Static entry is used to ensure that only a certain device, for example, a server, is plugged into a particular switch port. This is done by configuring the MAC address of the server as a static entry associated with the switch port. By doing this and specifying the MAC address of the server, he can block all incoming packets that do not have a source address specified.