Question: Question 3 In the polling protocol, the primary station usually send a select frame when Ob. a. It has data for a specific secondary station.
Question 3 In the polling protocol, the primary station usually send a select frame when Ob. a. It has data for a specific secondary station. It got a negative acknowledgment from a secondary station. It waits a data frame from another primary station. . Od. It searches for data to be sent from secondary stations
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