Implementing Cisco IP Switched Networks (CCNP SWITCH, legacy) — Question 114

An enterprise network has port security sticky enabled on all access ports.
A network administrator moves a PC from one office desk to another.
After the PC is moved, the network administrator clears the port security on the new network switch port connecting to the PC, but the port keeps going back into err-disabled mode. Which two factors are possible causes of this issue? (Choose two)

Answer options

• A. Port security sticky exists on the new network switch port.
• B. Port security sticky is disabled on the new network switch port.
• C. Port security must be disabled on all access ports.
• D. Port security is still enabled on the older network switch port.
• E. Port security sticky is still enabled on the older network switch port.

Correct answer: A, E

Explanation

The correct answers are A and E because port security sticky being enabled on the new port (A) would cause it to recognize the previous MAC address and enter err-disabled mode if it doesn't match. Additionally, if port security sticky is still enabled on the older port (E), the switch may still be holding onto that configuration, leading to potential conflicts when the PC is moved.