What do you understand by The Hidden Node Problem? Describe 2 different spatial configurations which exemplify this issue. What is the 4B/5B encoding for the 3-byte (ASCII) string “Sun”? What is the 16-bit internet checksum for the 3-byte binary message 00110001 00110010 00110011? Suppose a message is 11011000. What is the CRC checksum using the polynomial corresponding to 1011 to give a 3-bit answer? (Show the solution steps, not just the answer). What is Time Domain Reflectometry?

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