Multiple choice technology mainframe

Which of the following is true about Level numbers?

  1. (A) Level numbers can start from 0 to 99 and there are no Special Level numbers

  2. (B) Level numbers can start from 0 to 99 and 66, 77 and 88 are Special Level number

  3. (C) Level numbers can start from 0 to 49 and there are no Special Level numbers

  4. (D) Level numbers can start from 0 to 49 and 66, 77 and 88 are Special Level numbers.
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D Correct answer
Explanation

COBOL data description uses level numbers 01-49 for regular hierarchical records, with special level numbers 66 (RENAMES clause for redefining groups), 77 (independent elementary items outside record structure), and 88 (condition names for Boolean flags). Level numbers above 49 have specialized or dialect-specific uses.

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