loopback
CompTIA Network+ N10-005: 4.2 – Loopback plugs
One of the easiest ways to diagnose a piece of hardware or a network connection is with a loopback plug. In this video, you’ll learn about loopback plugs and how they can be used in many troubleshooting situations.
CompTIA A+ 220-702: 3.1 – Troubleshooting TCP/IP Settings
The TCP/IP protocol is the foundation of today’s network connectivity. In this video, you’ll learn about the TCP/IP settings and some of the loopback and automatic addressing functionality of the protocol.
CompTIA A+ 220-702: 1.4 – The A+ Toolbag
A well-equipped toolbag is an important part of any CompTIA A+ certified professional. In this video, you’ll learn which tools can help you with your day-to-day installation and troubleshooting tasks.