What does the yellow shield with the exclamation mark indicate?

Refer to the exhibit.

What does the yellow shield with the exclamation mark indicate?
A . The network uses open authentication and no encryption.
B . The network uses an unsupported channel.
C . The signal is too distorted to connect.
D . The AP that is transmitting this SSID uses the wrong RF domain.
E . This is the ad-hoc network.

View Answer

Answer: A