Question: (10 Marks) Q3: MAC protocols and wireless concepts 1) Explain four sources of energy wastage. ( 2 Marks) 2) Describe the exposed node problem, and

(10 Marks) Q3: MAC protocols and wireless concepts 1) Explain four

(10 Marks) Q3: MAC protocols and wireless concepts 1) Explain four sources of energy wastage. ( 2 Marks) 2) Describe the exposed node problem, and how RTS/CTS handshake can reduce that problem.( 3 Marks) Here 3) What is adaptive listing in S-MAC? And what is the purpose of it? ( 3 Marks) 4) Explain the pros and cons of increasing the transmission power of the sensor nodes on the MAC performance. (2 Marks) ce . 3

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