Refer to the exhibit.

Some 2950 series switches are connected to the conference area of the corporate headquarters
network. The switches provide two to three jacks per conference room to host laptop connections
for employees who visit the headquarters office. When large groups of employees come from
other locations, the network administrator often finds that hubs have been connected to wall jacks
in the conference area although the ports on the access layer switches were not intended to
support multiple workstations.
What action could the network administrator take to prevent access by multiple laptops through a
single switch port and still leave the switch functional for its intended use?

A.
Configure static entries in the switch MAC address table to include the range of addresses used
by visiting employees.

B.
Configure an ACL to allow only a single MAC address to connect to the switch at one time.

C.
Use the mac-address-table 1 global configuration command to limit each port to one source
MAC address.

D.
Implement Port Security on all interfaces and use the port-security maximum 1 command to
limit port access to a single MAC address.

E.
Implement Port Security on all interfaces and use the port-security mac-address sticky
command to limit access to a single MAC address.

F.
Implement Port Security at global configuration mode and use the port-security maximum 1
command to allow each switch only one attached hub.

Explanation: