Multiple choice technology mainframe What is the TSO command to display the Last 30 used datasets TSO DS dslist Display ds All of the above Reveal answer Fill a bubble to check yourself B Correct answer Explanation In ISPF/TSO, the dslist command (often accessed via option 3.4) displays a list of datasets. Typing RECALL or accessing the personal dataset list displays recently used datasets, but dslist is the closest valid command among the options.