When working with hardware, you may need to test the operation and functionality of the physical ports on a computer. What tool allows you to run diagnostics software to test the physical operation of computer ports?
B) Torx screwdriver
C) Loopback plug
D) Crossover cable
The answer: C) Loopback plug
A loopback plug will take the signal from a physical port and loop it back into a computer. Diagnostics software will send signals out of the port and look for the same signal to arrive back into the computer.
Want to know more? Watch “The CompTIA A+ Toolbag.”|
Every CompTIA A+ technology professional needs a tool bag with the right mix of diagnostic tools, specialty tools, and cleaning products. In this video, we’ll walk you through the must-have tools that you’ll need for everyday troubleshooting and preventive maintenance.