The standard connector for Ethernet cable is called the RJ45 by everybody. The fact this not actually and RJ45 but is in fact a 8P8C in irrelevant to common usage.
cat5, cat5e, and cat6 are common specifications for unshielded twisted pair used in Ethernet cabling.
Cat5e is useful for distances of up to 100 meters ( you can get a bit more distance out of it) and speeds of up to 1gigabit per second. While cat6 can handle speeds of up to 10 gigabits per second there is no real use for cat6 outside of data centers or as backbone in large environments as the 10Gb equipment is frightfully expensive and a very very fast internet connection of 20 megabits per second is 500 times slower.
This is probably too much information but there you go. f:)
RJ-45
An RJ-45 connector is the the connector at the end of a Cat-# cable (also known as a lan cable/network cable).
Cat.5
Network/Ethernet connectors typically use an RJ-45 connector. An RJ-45 plug is similar to a Phone plug, except that the RJ-45 plug had 8 contact points. RJ-45 plugs are most commonly found at the end of CAT-5e or CAT-6 cable for a network.
UTP most commonly used network cableCat 5 and Cat 6 network cables (also called 10BaseT) use an RJ-45 connector. Older thinwire ethernet (10Base2) uses BNC coaxial connect. Original thickwire ethernet used a special thicker cable with a proprietary AUI connector. The old IBM Token Ring system also used its own special cabling and connectors.
An RJ45 connector and a PCI NIC card are 2 completely different things. An RJ45 (Technically an 8P8C) is the connector at the end of a CAT cable which plugs into a NIC card. Unless you are thinking RJ11, which has nothing to do with CAT cables. An RJ11 is the name of the cable used for single-line dialup modems and telephones, in which case, the connector is called a 6P4C connector.
UTP most commonly used network cableCat 5 and Cat 6 network cables (also called 10BaseT) use an RJ-45 connector. Older thinwire ethernet (10Base2) uses BNC coaxial connect. Original thickwire ethernet used a special thicker cable with a proprietary AUI connector. The old IBM Token Ring system also used its own special cabling and connectors.
No, 10Base5 uses coaxial cable (RG-6) with an F connector
The modern Ethernet cable is a Category 5 UTP cable, with an RJ 45 connector.
UTP or STP Cat 5 cable uses an RJ-45 connector.
An RJ45 connector has 8 conductors. it has the naming convention of 8P8C (8positions 8conductors).
UTP most commonly used network cableCat 5 and Cat 6 network cables (also called 10BaseT) use an RJ-45 connector. Older thinwire ethernet (10Base2) uses BNC coaxial connect. Original thickwire ethernet used a special thicker cable with a proprietary AUI connector. The old IBM Token Ring system also used its own special cabling and connectors.