Multiple choice technology mainframe

Which file open mode option throws error?

  1. EXTEND

  2. OUTPUT

  3. I-O

  4. INPUT

  5. None of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All listed COBOL file open modes are valid: EXTEND adds records to existing file, OUTPUT creates new or replaces, I-O allows input-output operations, and INPUT reads from file. None of these modes inherently throws an error - they are standard file operation modes.

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