Chapter 4: Layer 1 - Electronics and Signals

Outline:

Chapter Review
Chapter Overview
4.1 Basics of Electricity
4.1.1 A helium atom
4.1.2 Creating stable atoms
4.1.3 Static electricity
4.1.4 Electrical current including insulators, conductors, and semiconductors
4.1.5 Electrical measurement terms
4.1.6 Analogy for voltage, resistance, and current
4.1.7 Graphing AC and DC voltage
4.1.8 Constructing a simple series electrical current
4.1.9 Purpose of grounding networking equipment
4.2 Basics of Digital Multimeters
4.2.1 Safe handling and use of the multimeter
4.2.2 Using a multimeter to make resistance measurements
4.2.3 Using a multimeter to make voltage measurements
4.2.4 Measuring simple series circuit
4.2.5 Constructing a simple electrical communication system
4.3 Basics of Signals and Noise in Communications Systems
4.3.1 Comparing analog and digital signals
4.3.2 Using analog signals to build digital signals
4.3.3 Representing one bit on a physical medium
4.3.4 Network signal propagation
4.3.5 Network attenuation
4.3.6 Network reflection
4.3.7 Noise
4.3.8 Dispersion, jitter, and latency
4.3.9 Collision
4.3.10 Messages in terms of bits
4.4 Basics of Encoding Networking Signals
4.4.1 Historical examples of encoding
4.4.2 Modulation and encoding
Chapter Summary

Chapter Quiz