Multiple choice technology mainframe For how long a job can be executed continously in a mainframe ? 24Hrs. 1 week. No limit. 248 Days. Reveal answer Fill a bubble to check yourself D Correct answer Explanation Mainframe jobs can run continuously for maximum 248 days. This is a system limitation due to how job start time is tracked internally. Options of 24 hours, 1 week, or no limit are all incorrect.