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Mainframe Interview Questions
  1. What is the difference between LINK and XCTL?
  2. What is the difference between the MRO & ISC?
  3. What happens when a CICS command contains the NOHANDLE option?
  4. What is Quasi-reentrancy?
  5. How are VSAM Files Read in CICS pgms?
  6. What are the differences between Temporary Storage Queue (TSQ) and Transient Data Quene (TDQ)?
  7. What is the CICS command that is used to access current date and time?
  8. What is MDT?
  9. What is the CICS LOAD command?
  10. What is a cursor in CICS SQL processing?
  11. How do you handle errors in CICS pgms?
  12. Explain the various ways data can be passed between CICS programs?
  13. What is CEDF?
  14. What is a clustered index?
  15. What is the difference between static and dynamic SQL?
  16. How do you retrieve the data from a nullable column?
  17. What is a DBRM, PLAN?
  18. What is the difference between HIDAM and HDAM databases?
  19. What is Mainframe Testing?
  20. What is the self-referencing constraint?
  21. Explain lock contention?
  22. What is the difference between version control and debugging tools?
  23. Explain the difference among the EXEC LINK, EXEC XCTL, and Cobol II static call statements in CICS?
  24. Name some commands used for CICS file browsing.?
  25. How will you access a VSAM File using an alternate index?
  26. What is the primary objective of CICS?
  27. How does DB2 store NULL physically?
  28. What is DCLGEN?
  29. What are the two types of transient data queues?
  30. What does EIB mean?
  31. What is SPUFI?
  32. What is the COMMAREA(communications area)?
  33. What do the keywords MAPONLY and DATAONLY mean?
  34. What is ASRA ABEND in CICS?
  35. What are the differences between DFHCOMMAREA and TSQ?
  36. What is an alias?
  37. Which command is used to release a record on which exclusive control is gained?
  38. What are the different types of Table spaces?
  39. How to establish dynamic cursor position on a map?
  40. How do you make your BMS maps case sensitive?
  41. What is EIB? How it can be used?
  42. What is the significance of RDO?
  43. What is the difference between pseudo-conversational and conversational?
  44. When are scope terminators compulsory?
  45. What are different ways of Initiating Transaction in CICS?