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Exam Certified Data Engineer Professional topic 1 question 182 discussion

Actual exam question from Databricks's Certified Data Engineer Professional
Question #: 182
Topic #: 1
[All Certified Data Engineer Professional Questions]

The data engineering team has configured a Databricks SQL query and alert to monitor the values in a Delta Lake table. The recent_sensor_recordings table contains an identifying sensor_id alongside the timestamp and temperature for the most recent 5 minutes of recordings.

The below query is used to create the alert:



The query is set to refresh each minute and always completes in less than 10 seconds. The alert is set to trigger when mean (temperature) > 120. Notifications are triggered to be sent at most every 1 minute.

If this alert raises notifications for 3 consecutive minutes and then stops, which statement must be true?

  • A. The total average temperature across all sensors exceeded 120 on three consecutive executions of the query
  • B. The average temperature recordings for at least one sensor exceeded 120 on three consecutive executions of the query
  • C. The source query failed to update properly for three consecutive minutes and then restarted
  • D. The maximum temperature recording for at least one sensor exceeded 120 on three consecutive executions of the query
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Suggested Answer: B 🗳️
by e904bf4 at Dec. 6, 2024, 7:29 p.m.

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Thameur01
2 months ago
Selected Answer: B
B, because avg temp is calculated by sensor_id and not total
upvoted 1 times
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Ayomidetolu_A
2 months, 1 week ago
Selected Answer: B
B is the correct answer
upvoted 1 times
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e904bf4
2 months, 1 week ago
Selected Answer: B
B is correct
upvoted 1 times
...
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