You are sitting in an airport preparing to use a free WLAN. When you look at the connections in your Windows 7 wireless client, you see a network name and three boxes with a yellow shield.
What does this mean?
A. You cannot connect to this WLAN.
B. An open ad hoc network is nearby.
C. The WLAN in the airport is open.
D. A secure ad hoc network is nearby.
E. A secure WLAN is in the airport.
F. You must provide a username and password to access the WLAN in the airport.