An Ethernet cable carries the broadband signals between your modem, router, computer and other wired internet-capable devices. Ethernet cable is widely used in commerce, resident and industry.
CAT5e is little interference with other electrical cables or devices and is enough for home users.
CAT6 and CAT6A is significantly faster than a CAT5 or CAT5e. CAT6 or CAT6A are suitable for whose who are dealing with a high power network that requires this high speed every day.
Cat7 are meant for long-distance that offers 10 gigabits per second of speed across distances up to 100 meters. It is shielded which means there is almost no possibility of electrical interference with the cable.