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-handwriting Q1. Describe the functions of each layers of OSI model. Q2. Explain Types of digital-to-analog conversion. Q3. List different types of coding schemes. Q4.

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Q1. Describe the functions of each layers of OSI model. Q2. Explain Types of digital-to-analog conversion. Q3. List different types of coding schemes. Q4. Explain with diagram Manchester and differential Manchester schemes. Q5. Describe causes of signal impairments. Q6. What is difference between guided media and unguided media, give examples Q7. The power of a signal is 10 mW and the power of the noise is 1/1W; what are the values of SNR and SNRdB

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