SYSDSN(dataset name) instruction helps to ?
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Defines the dataset name in system Catalog
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Uncatalog the dataset name given
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Tells if a dataset name exists
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none
Reveal answer
Fill a bubble to check yourself
C
Correct answer
Explanation
SYSDSN is a TSO/E REXX function that checks whether a dataset exists in the system. It returns 0 if the dataset exists, and a non-zero value if it does not exist. Option C correctly describes this purpose.
AI explanation
The SYSDSN function (used in CLIST/REXX under TSO) checks the system catalog and returns a status indicating whether a given dataset name exists (and its state, such as cataloged or not found). It's a query/inquiry function, not one that creates, catalogs, or uncatalogs a dataset itself.