You can tell the CAT level (or category) of a cable by looking for imprinted markings along the length of the cable. Look for the number preceded by 'CAT.' That is the category of the cable.
Cat, stand for category. A category 5 cable may be used as ethernet cables, telephone cords, or tv video. Each category of cable pertains to the level of cable. For example the category 1 is the most primitive.
There is the USB cable and the twisted pair cable (Cat 5 and Cat 6) for networking.
Cat 2 cable was rated at 4 or 16 mbps whereas cat 3 cable would be rated at 10 mbps. Since 10baseT networks with Ethernet ran at 10 mbps this meant that cat 2 cable would not be useable in those networks. The minimum category cable for those networks had to be at least a cat 3 cable.
Cat-5 has 4 pairs and 8 wires
Cat-5 has 4 pairs and 8 wires
Ethernet cable of cat 5e or cat 6 connected to modem or router
The maximum length of a cat 5 e cable with out a repeater is 100meters
Cat 5, Cat 5e, Cat 6, Cat7
A Cat 5 cable is an Ethernet cable, used in computer networks. Cat 5 cables are designed for high signal integrity, and can carry two separate telephone lines.
cat A
The modern Ethernet cable is a Category 5 UTP cable, with an RJ 45 connector.
Cat-5 cable, sometimes called Ethernet cable, is short for Category 5 cable, a current industry standard for network and telephone wiring. Cat-5 cable is unshielded wire containing four pairs of 24-gauge twisted copper pairs, terminating in an RJ-45 jack. If a wire is certified as Cat-5 and not just a twisted pair wire, it will have "Cat-5" printed on the shielding.