Multiple choice technology mainframe

DD names for FB and VB input files are

  1. INPF,INPV

  2. INPFB,INPVB

  3. INFN,INVN

  4. none of the above
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C Correct answer
Explanation

The DD (Data Definition) names for FB (Fixed Block) and VB (Variable Block) input files are INFN and INVN respectively in this specific mainframe environment.

AI explanation

Marked correct: INFN, INVN. DD (Data Definition) names in JCL are arbitrary labels chosen by the programmer/shop standard to identify a dataset to a program — there is no universal IBM standard mapping 'FB input' to 'INFN' and 'VB input' to 'INVN'. This only makes sense as the answer if it matches a specific course's example JCL/program that the question was drawn from, which isn't included here. Without that context, none of the listed name pairs is inherently more 'correct' than another, since DD names are program-specific conventions, not a language rule.

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