Question: Attempt all questions Q1: What is the difference between simplex, half duplex and full duplex communication modes? Give examples of each mode of communication.

Attempt all questions Q1: What is the difference between simplex, half duplex and full duplex communication modes? Give examples of each mode of communication. (5) b. According to you, which network device is the most important? And why? (2) Q2. Write a note on any two layers (of your choice) of OSI model. (4) 03. What is the difference between frequency, amplitude and phase of the signal? Elaborate with examples/drawing. (6) Q4. Apply Unipolar, RZ, NRZ-L, NRZ-I, Manchester and Differential Manchester on the following digital data. (12) Data 00111010011 b. Apply HDB3 and B8ZS on following data. Data = 11110000100000000110000 Thoond (3+3)

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