30 Best IBM Mainframe Interview Questions and Answers

List of top 30 most frequently asked ibm mainframe interview questions and answers pdf download free

IBM Mainframe Interview Questions and Answers List

  1. Name the divisions in a COBOL program.
  2. What are the different data types available in COBOL?
  3. What does the INITIALIZE verb do?
  4. What is 77 level used for ?
  5. What is 88 level used for ?
  6. What is level 66 used for ?
  7. What does the IS NUMERIC clause establish ?
  8. How do you define a table/array in COBOL?
  9. Can the OCCURS clause be at the 01 level?
  10. What is the difference between index and subscript?
  11. What is the difference between SEARCH and SEARCH ALL?
  12. What should be the sorting order for SEARCH ALL?
  13. What is binary search?
  14. My program has an array defined to have 10 items. Due to a bug, I find that even if the program access the 11th item in this array, the program does not abend.
  15. How do you sort in a COBOL program? Give sort file definition, sort statement syntax and meaning.
  16. How do you define a sort file in JCL that runs the COBOL program?
  17. How many Sections are there in Data Division?
  18. Give the format of USING and GIVING in SORT statement. What are the restrictions with it?
  19. What is the difference between performing a SECTION and a PARAGRAPH?
  20. What is the use of EVALUATE statement?
  21. What are the different forms of EVALUATE statement?
  22. How do you come out of an EVALUATE statement?
  23. In an EVALUATE statement, can I give a complex condition on a when clause?
  24. What is a scope terminator? Give examples.
  25. How do you do in-line PERFORM?
  26. When would you use in-line perform?
  27. What is the difference between CONTINUE & NEXT SENTENCE ?
  28. What does EXIT do ?
  29. Can I redefine an X(100) field with a field of X(200)?
  30. Can I redefine an X(200) field with a field of X(100) ?

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