[Solved] Long preamble used in Berkeley MAC (B-MAC) has long preamble consist of

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Q.	Long preamble used in Berkeley MAC (B-MAC) has long preamble consist of
A.	application data
B.	other payloads
C.	has fixed length and may carry sender, receiver, and packet size information
D.	has variable length and may carry sender, receiver, and packet size information
Answer» D. has variable length and may carry sender, receiver, and packet size information

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