I am trying to understand the way the network cable connected to a RJ45 is suppose to be connected.
Now I know how to to connect it parallel or crossed and that crossed is needed for a direct connection between two computerese, or for connecting between older switches and/or hubs.
I have read and seen that to connect computerese in a 100Mb network you only need a 4 wire cable (pins 1 2 3 6) but the protocol calls for a full connection that you need all 8 wires. I have seen printers that need all 8 wires to be connected to run in full duplex (on a 100mb net) even though the computer sending the data only has 4 wires.
Another question is I understand that a cat5 cable is only good for a network up to 100mb. Now knowing that to connect a gig network you need all 8 wires and also a ground\earth wire inside. When the network is working at a gig speed it means that the speed between the bytes is 1Ghz and does not slow down the speed of the bytes just the time between sending the packets.
So you need a cat7 wire and not cat5 because the bytes are slowed down till it is sent correctly.?
Sorry - This may not be written up correctly but I am trying to understand how it works.