Multiple choice technology mainframe When to use DISP=MOD? For both sequential and partitioned datasets to be extended or created. Only for existing datasets to be extended. For all secured sequential datasets to be extended. Only for sequential datasets to be extended or created. Reveal answer Fill a bubble to check yourself D Correct answer Explanation DISP=MOD is used exclusively for sequential datasets to extend existing data or create new datasets. It cannot be used with partitioned datasets (PDS), which is why options mentioning partitioned datasets are incorrect.