Many of the corporate users work from a coffee shop during their lunch breaks. The coffee shop only has an open wireless network. Which of the following should the administrator recommend to users to secure their wireless communications at the coffee shop?
A. Enable the host-based firewall on each of the laptops
B. Use a VPN after connecting to the coffee shop wireless
C. Edit the SSID connection information and change ‘open’ to ‘shared’
D. Connect to the open SSID then switch on WPA2 encryption
