crimper
twisted pair and attach connector to it and squeez it
stripper
takes of that protective wiring
multi meter
measures power
tone gen and probe
identify where there is break in the signal with tone generator and makes a signal and then probe listen for it
cable tester
test if it works
loopback plug
take a signal from device and ech it back to that device
punchdown wires
for category ethernet cables fingers are too big
wifi analyzer
software to measure the strength