You are the network administrator of a small Layer 2 network with 50 users. Lately, users have been complaining that the network is very slow. While troubleshooting, you notice that the CAM table of…

Question

Exhibit

Options

• AUpgrade the switches
• BConfigure BPDU guard
• CConfigure VLAN access lists
• DConfigure port security
• EConfigure Dynamic ARP inspection

• A
  5% (2)
• B
  3% (1)
• C
  11% (4)
• D
  78% (29)
• E
  3% (1)

Explanation

Enabling Port Security Port security is either autoconfigured or enabled manually by specifying a MAC address. If a MAC address is not specified, the source address from the incoming traffic is autoconfigured and secured, up to the maximum number of MAC addresses allowed. These autoconfigured MAC addresses remain secured for a time, depending upon the aging timer set. The autoconfigured MAC addresses are cleared from the port in case of a link-down event. When you enable port security on a port, any dynamic CAM entries that are associated with the port are cleared. If there are any currently configured static or permanent CAM entrie on that same port, you may not be able to enable the port-security on that port. If this is the case, clear the configured static and permanent earl entries on that port and then enable port-security. To enable port security, perform this task in privileged mode:

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