DP-750 Certification Practice Question #74

Question

You are scheduling a Lakeflow Job using the **Advanced** schedule type with the **Show Cron Syntax** option enabled. Databricks uses Quartz cron syntax, where the six fields are, in order: `seconds minutes hours day-of-month month day-of-week`, and `?` marks an unspecified day field. The job must run **every day at exactly 09:46:00** in the `America/Los_Angeles` time zone. You define the schedule in JSON for the Databricks CLI: ```json { "schedule": { "quartz_cron_expression": "", "timezone_id": "America/Los_Angeles", "pause_status": "UNPAUSED" }, "max_concurrent_runs": 1 } ``` Which value should replace `` so the job runs daily at 09:46:00 local time?

Accepted Answer

Quartz cron reads `seconds minutes hours day-of-month month day-of-week`. For 09:46:00 daily, seconds = 0, minutes = 46, hours = 9, day-of-month = `*`, month = `*`, day-of-week = `?` (you must use `?` in one day field when the other is `*`). That yields `0 46 9 * * ?`. Option B (`46 9 0 ...`) would fire at 00:09:46; C (`0 9 46 ...`) uses an invalid hour of 46; D (`9 46 0 ...`) reverses the fields to 00:46:09 with the `?`/`*` placement swapped. Databricks enforces a minimum 10-second interval between scheduled runs regardless of the cron expression.

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