You want to create a rollover cable that has an RJ$45$ connector on both ends. How should you connect the wires within the connectors?

answer

Connect pin $1$ to pin $8,$ pin $2$ to pin $7,$ pin $3$ to pin $6,$ and pin $4$ to pin $5.$

Connect each pin on one end to the same pin on the other end $($pin $1$ to pin $1,$ pin $2$ to pin $2,$ etc.$).$

Use the T$568$A standard on one end and the T$568$B standard on the other end.

Connect pin $1$ to pin $3$ and pin $2$ to pin $6.$