Multiple choice technology mainframe Which program support to run REXX in batch environment? IRXJCL IKJEFT01 IKJEFT1B IREXJCL Reveal answer Fill a bubble to check yourself A,B,C Correct answer Explanation In the mainframe z/OS environment, REXX execs can be executed in batch using IRXJCL (the dedicated REXX interpreter batch utility) or via the TSO terminal monitor programs IKJEFT01 and IKJEFT1B.