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How does the FIFO scheduler execute the jobs?

You have a cluster running with the FIFO scheduler enabled. You submit a large job A to the
cluster which you expect to run for one hour. Then, you submit job B to the cluster, which you
expect to run a couple of minutes only. Let’s assume both jobs are running at the same priority.
How does the FIFO scheduler execute the jobs? (Choose 3)

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A.
The order of execution of tasks within a job may vary.

B.
When a job is submitted, all tasks belonging to that job are scheduled.

C.
Given jobs A and B submitted in that order, all tasks from job A will be scheduled before all
tasks from job B.

D.
Since job B needs only a few tasks, if might finish before job A completes.

Explanation:
http://seriss.com/rush-current/rush/rush-priority.html#FIFO%20Scheduling (see fifo
scheduling)

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