Signs and symptoms of E. coli O157:H7 infection typically begin three or four days after exposure to the bacteria, though you may become ill as soon as one day after to more than a week later. Signs and symptoms include:
WPA - Wi-Fi Protected Access. Definition: WPA is a security technology for Wi-Fi wireless computer networks. WPA improves on the authentication and encryption features of WEP (Wired Equivalent Privacy). In fact, WPA was developed by the networking industry in response to the weaknesses of WEP.
The person who set up your network usually keeps the WEP key or WPA/WPA2 preshared key/passphrase. If your wireless network was set up by your Internet Service Provider (ISP), then you might find the information in the documentation they provided. See the documentation that came with your access point (wireless router).