A home user reports to a network technician that the Internet is slow. The network administrator discovers that
multiple unknown devices are connected to the access point. Which of the following is the MOST likely cause?

A.
An evil twin has been implemented.

B.
A successful WPS attack has occurred.

C.
The user is experiencing ARP poisoning.

D.
The user is connected to a botnet.

Explanation:
https://en.wikipedia.org/wiki/Wi-Fi_Protected_Setup