1. Cross Cable:-

                    A crossover cable is a type of cable installation that is used for the interconnection of two similar devices. It is enabled by reversing the transmission and receiving pins at both ends, so that output from one computer becomes input to the other, and vice versa.

Crossover cables are used when:

1. Connecting a computer to a computer

2. Connecting a router to a router

3. Connecting a switch to a switch

4. Connecting a hub to a hub and

5. Connecting a router to a PC because both devices have the same components