A:
WEP and WPA (and WPA2) are wireless security standards that routers use to protect wireless transmissions to and from wireless network devices (like laptops, tablets, smartphones and network printers). As you are trying to connect your printer to your network, you need to know the WEP, WPA or WPA2 wireless password (security key)that you've previously established on your router - it's that wireless password that you're being asked for on the printer setup screen. If you don't know that password, you may find it printed on a label on the router, or, if you've previously connected a wireless device to your network, you may be able to look the required password up on that device. Otherwise, you'll need to configure your router with a wireless password (exact procedure differs from router to router), and then use that to connect your printer.