Objective 5.3: Given a scenario, utilize the appropriate hardware tools
these are used to check the quality of the cable, how many wires that fully connected, a light will indicate how many wires are working 我TM也不知道这个东西怎么写！~
This is used to check the connectivity of a fibre optic cable and the quality of the connection, by sending timed signals.
It is used to connect the network cables to a RJ-45 network connector. It punches down the cable to ensure a connection and then cuts off the excess wires.