T568A and T568B. Pg. 799. A+ 8th edition Jean Andrews
It's usually CAT-5 or CAT-5e.
The older method was by firewire. Most commonly these days is by USB or using a crossover cable. A crossover cable is basically an Ethernet cable terminated to T568A standards on one end and T568B standards on the other end. For the end user, they make user-friendly software to help configure the connections as well.
t568a
It's usually CAT-5 or CAT-5e.
Crossover Cable (T568A on one end, T568B on the other)
When wiring one end of an Ethernet cable with T568A and the other end with T568B, the wire pairs that get switched are the orange and green pairs. This crossover arrangement is typically used to connect two networking devices directly without the need for a crossover cable.
You can find the answer here: http://brainreactor.ru/2010/01/cisco-ccna-exploration-network-fundamentals-final-exam-part-5/
To create a Crossover Cable, wire one connecter to the T568A Network Standard and wire the other connector to the T568B Network Standard, so the cable 'crosses over', A becomes B and visa versa.
This is a cross-over cable. But specifically, the orange and green pairs are only affected with relation to pin changes.
1-white/green 2- green 3-white/orange1-white/green 2- green 3-white/orange 4-blue 5 white/blue 6-orange 7-white/brown
T-568A and T-568B are two types of wiring for the connectors on ethernet cables. Both standards work fine, but you can not intermix the two types of connectors on a single cable. You can have mixed cables on a network as long as each individual cable is wired the same on both ends. (Example, one patch cable uses t568a on both ends, a different cable uses t568b on both ends, and a third uses a matching, but different color pinout) Some cable is labeled 568a or 568b. This means that the 4 twisted pairs (for a total of 8 little cables) inside the jacketed ethernet cable is made for a certain type of connection. For example, cat 6 cable is higher quality, rated for up to 10GB network use. There are more twists per inch of those little wire pairs inside the jacket of the cable to help reduce crosstalk and interference. I have some cat 6 cable labeled 568b, and of the 4 twisted pairs, some have more twists then others. corresponding to what the data pairs are in the cable. I assume this is a cost cutting measure as more twists means more wire inside of those ethernet cables. Better quality cable should have equal amounts of twists per inch so that either 568a or 568b connections can be used without having to worry about what the cable specifies.