Contents : 1. Introduction 1.1. Uses of Computer Networks 1.2. Network Hardware 1.3. Network Software 1.4. Reference Models 1.5. Example Networks 1.6. Network Standarization 1.7. Metric Units 1.8. Outline of the Rest of the Book 1.9. Summary 2. The Physical Layer 2.1. The Theoritical Basis for Data Communication 2.2. Guided Transmission Media …