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Note for Data Communication and Computer Network - DCCN By amIndian

  • Data Communication and Computer Network - DCCN
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Note for Data Communication and Computer Network - DCCN By amIndian

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Amindian
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William Stallings Data and Computer Communications 7th Edition Chapter 4 Transmission Media

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Overview • Guided - wire • Unguided - wireless • Characteristics and quality determined by medium and signal • For guided, the medium is more important • For unguided, the bandwidth produced by the antenna is more important • Key concerns are data rate and distance

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Design Factors • Bandwidth —Higher bandwidth gives higher data rate • Transmission impairments —Attenuation • Interference • Number of receivers —In guided media —More receivers (multi-point) introduce more attenuation

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Electromagnetic Spectrum

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