Which of the following tools would the technician MOST likely use to find this cable?

The technician is troubleshooting a connection issue between the switch and the wall jack. The user is plugged into the jack; however, there is no connection. The technician goes into the switch room to see if the cable is plugged into the switch, but none of the cables are labeled.

Which of the following tools would the technician MOST likely use to find this cable?
A . WiFi analyzer
B . Loopback plug
C . Multimeter
D . Tone generator

Answer: D