The 802 refers to Wireless 802.11 with suffix letters of a, b, g, n, ac or ax with corresponding increases of speed with ax being newest and fastest....
I believe that the HP Laptop 17-by3xxx in coolnewyorker's specs is a Modern Standby device, supporting S0 sleep rather than the older S3 sleep. Only...
No, being in sleep mode will not harm the battery at all. The only negative on the battery is that you are still consuming a small amount of battery...