Refer to the exhibit. 
What type of attack is being defended against？ （）

A. The traffic will be forwarded to the router processor for further processing.
B. The traffic will be dropped.
C. The traffic will be forwarded to the TCAM for further processing.
D. The traffic will be forwarded without further processing.

A. The first address learned on the port will be removed from the secure address list and be  replaced with the new address.
B. All secure addresses will age out and be removed from the secure address list. This will cause  the security violation counter to increment.
C. The packets with the new source addresses will be dropped until a sufficient number of secure  MAC addresses are removed from the secure address list.
D. The interface will be placed into the error-disabled state immediately， and an SNMP trap  notification will be sent.

A. Interface FastEthernet 0/1 was configured with the switchport port-security aging command.  
B. Interface FastEthernet 0/1 was configured with the switchport port-security protect command.  
C. Interface FastEthernet 0/1 was configured with the switchport port-security violation restrict  command.
D. When the number of secure IP addresses reaches 10， the interface will immediately shut down. 
E. When the number of secure MAC addresses reaches 10， the interface will immediately shut  down and an SNMP trap notification will be sent.