Physical Layer, Transmission Media and Cabling

What this page covers

The resources here follow the physical layer from the signal to the wall socket. Some look at media types: guided (wired) and unguided (wireless) transmission, coaxial cable, twisted pair and fiber optics. Others go into practical work, such as wiring standards, connectors, installation tools and testing.

Where to start

Begin with the mind map TRANSMISSION MEDIA. It lays out guided and unguided media on one screen, so you can see how the pieces fit. Then open Categories of twisted-pair cable to compare cable ratings, and Distribution Cables for indoor fiber cable.

If you want flashcards next, Physical Network Medias compares coaxial, twisted pair and fiber optic cable side by side. The deck Chapter 3: Fiber Optic Application covers terms such as PON, LAN, WAN, media converters and the last mile.

Using quizzes and maps together

Read a map first, then test yourself. After the twisted-pair map, try 5 Cable Installation, which asks about minimum bend radius for twisted-pair and optical fiber cable. After the fiber material, try Quiz Chapter 3 - Fiber Optic Application. For field-style questions on testers and cross connect colors, use Technician Quiz part 1.

Write down the questions you miss, go back to the matching map, and try the quiz again a day later. A few resources also suit people preparing for CCNA or CompTIA Network+, such as CCNA5 Chapter 4 Exam Practice.

Where it sits

This unit belongs to the strand Physical Layer and Data Communications, within the subject Networks and telecommunications. It is the hands-on end of that strand, where signals meet real cable.

Next step

Choose one map, take one quiz, and see which topic needs another look. Then make your own notes or flashcards for the gaps.