What is the purpose of REGION key word ?
-
specifies the amount of space required by a step
-
specifies the amount of space required by a job
-
both of the above
-
none of the above
The REGION parameter specifies the amount of virtual storage (region) required for execution. It can be coded on both JOB statement (applies to all steps in job) and EXEC statement (applies to specific step). When specified on both, EXEC-level REGION overrides JOB-level for that step. Therefore, REGION can specify space required by either a job or a step.
The REGION keyword in the relevant job-control language reserves memory space, and it can be specified at either the job level or the step level, so it serves both purposes depending on where it's coded. That's why the option covering only jobs or only steps is incomplete, and 'both of the above' captures its full scope.