The Physical Layer: Foundation of Connectivity
Introduction to the Physical Layer: Foundation of Connectivity; Fundamental Functions of the Physical Layer; Key Components in Physical Layer Operations; Understanding Physical Topologies; Guided Transmission Media; Twisted-Pair Cables: UTP vs. STP; Coaxial Cable Structure and Applications; Fiber Optic Technology: Single-mode and Multi-mode; Unguided Transmission Media; The Wireless Spectrum: Radio, Microwave, and Infrared; Data Encoding Principles; Common Encoding Schemes: NRZ, Manchester, RZ; Digital Modulation: ASK, FSK, PSK; Signal Characteristics: Bandwidth, Data Rate, Noise, Attenuation; Reflect and Discuss: Impact on Network Performance
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