UTP Ethernet cable: Cable is the most important unit of the network structure and organization. Cable quality and connections are main factor of the reducing time spend and solve the network problems.

Nowadays, UTP copper cable is widely used in the Ethernet network. This cable divided into the many types, which is including CAT3, CAT5, CAT5e and CAT6. There are all consist of same 8 wires and use RJ45 connector. Network UTP cables are usually straight and crossover connect.

Cable tester: A cable tester is an electronic device used to verify the electrical connections in a signal cable or other wired assembly. Basic cable testers are continuity testers that verify the existence of a conductive path between ends of the cable, and verify the correct wiring of connectors on the cable. More advanced cable testers can measure the signal transmission properties of the cable such as its resistance, signal attenuation, noise and interference.