Microsoft Azure Data Fundamentals DP-900 Practice Question
You stream sensor events into Azure Stream Analytics and need a query that continuously calculates the average temperature over the most recent five-second period, refreshing the value every second. Which type of temporal window should you use in the query?
A hopping window lets you specify both a window length and a hop size. Setting a five-second window length with a one-second hop creates overlapping windows: each new window starts one second after the previous one, but still covers the last five seconds of data. This produces a new, updated average every second. Tumbling windows are non-overlapping, so results would appear only once every five seconds. Sliding windows emit results only when events enter or leave the window, so they do not guarantee output on a fixed schedule. Session windows group bursts of activity separated by idle gaps and are not appropriate for fixed-interval aggregation.
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Microsoft Azure Data Fundamentals DP-900
Describe an analytics workload
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