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Please answer the following questions about collisions in media access for fixed and wireless network. a) What is CSMA? b) Why collision can still happen

Please answer the following questions about collisions in media access for fixed and wireless network. a) What is CSMA? b) Why collision can still happen when CSMA is adopted by nodes? c) What is CSMA/CD and CSMA/CA? d) Why CSMA/CD is not suitable for wireless network?

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