IP Cable is also referred to as EtherNet Cable. Perhaps you’re reading up on an ‘IP Camera’ (or perhaps ‘IP POE Camera’). The IP refers to ‘Internet Protocol’ and the camera basically connects to the internet through a cable (whereas POE stands for Power Over Ethernet). Manufacturers will often use the IP to differentiate the ones that can connect directly into an ethernet connection from those that send their signal out over a BNC coaxial cable. These two aren’t compatible (at least, without adapters). An ethernet cable comes in a multitude of types, like CAT 5, CAT 5e, CAT 6, CAT 7,  Cat 8 etc… Each cable type has different bandwidths and prices to match. We consider CAT 6 to be the best price point. They offer speeds of up to a gigabit and at a fair price. For the vast majority of people, CAT 6 is the fastest cable they’ll ever use, at least for the foreseeable future.