If we want to connect two PCs directly together, which type of UTP cable we should use ?

when we are connecting two PC'S then we use Crossover cable

We will use Crossover cable. When we have devices with same group like PC, Routers etc. We use cross cable. Connecting PC to switch or Router to switch involves straight cable. Rollover is a console cable.

you should use crossover. T568A<----->T568B

In this case you should use Crossover Cable.

Normally when you want to connect to similar devices (for example two router) you should use Crossover cable.

Connect two PCs direct together with ....Crossover Cable

you should use cross over cable, the new Network interface cards "NIS" have auto MDI feature which can check your cable type and adjust the interface upon the cable type so you can use straight throw cables to connect tow PCs only if your NIC support auto MDI feature.

cable that is used to connect to similar device is crossover

We can connect same device by using Crossover Cable

You should use Crossover Cable

a Straight-throw Cable can be use to create connection between two computer.