Collection of Mainframe COBOL Interview Questions expected in a Mainframe Interview.
Professionals are invited to share the answers.
- Explain the guidelines that should be followed to write a structured COBOL program?
- Explain what is the difference between a DYNAMIC and STATIC call in COBOL ?
- Explain in detail what is the point of the REPLACING option of a copy statement ?
- What is the default value(s) for an INITIALIZE and what keyword allows for an override of the default ?
- In a COBOL II PERFORM statement, when is the conditional tested, before or after the perform execution.
- Under what conditions a scope terminator mandatory in COBOL ?
- Explain in brief what is LENGTH in COBOL II ?
- Explain in detail what is the difference between a binary search and a sequential search?What are the pertinent COBOL ?
- What is AMODE(24), AMODE(31), RMODE(24) and RMODE(ANY) (applicable to only MVSESA Enterprise Server) ?
- In an EVALUTE statement is the order of the WHEN clauses significant ?
- Explain in detail call by context by comparing it to other calls ?
- What was removed from COBOL in the COBOL II implementation ?
- What is the importance of ‘above the line’ and ‘below the line’ in COBOL?
- What COBOL construct is the COBOL II EVALUATE meant to replace ?
- Explain the difference between NEXT SENTENCE and CONTINUE ?
- What is an in line PERFORM?
- How can you submit a job from COBOL programs ?
- Explain in detail what is a bind?
- How do you set a return code to the JCL from a COBOL program ?
- What is SSRANGE and NOSSRANGE in COBOL?
- Explain how do you define a sort file in JCL that runs the COBOL program ?
- What is binary search. Explain in detail how it helps in a search ?
- What is the Importance of GLOBAL clause According to new standards of COBOL ?
- Difference between next and continue clause ?
- What is the difference between external and global variables ?
- How is sign stored in a comp-3 field in COBOL?
- How is sign stored in Packed Decimal fields and Zoned Decimal fields in COBOL?
- What do you do to resolve SOC-7 error in COBOL?
- Can I redefine an X(100) field with a field of X(200) ?
- What is the difference between CONTINUE & NEXT SENTENCE ?
- When would you use in-line perform in COBOL?
- Explain what happens when we move a comp-3 field to an edited in COBOL?
- How many bytes does a S9(7) COMP-3 field occupy ?
- What are the differences between COBOL and COBOL II ?
- Can you call an OS VS COBOL program from a VS COBOL II program?
- What are the steps you go through while creating a COBOL program executable ?
- What are the differences between OS VS COBOL and VS COBOL II ?
- What is a scope terminator? Can you provide some examples ?
- What should be the sorting order for SEARCH ALL in COBOL?
- What is the difference between SEARCH and SEARCH ALL ?
- How do you come out of an EVALUATE statement in a COBOL program?
- Explain in detail what is the use of EVALUATE statement in COBOL?
- What is the difference between performing a SECTION and a PARAGRAPH ?
- How do you define a sort file in JCL that runs the COBOL program ?
- How do you sort in a COBOL program Give sort file definition, sort statement syntax and meaning ?
- What is an explicit scope terminator ?
- Explain the difference between index and subscript in COBOL?
- What does the IS NUMERIC clause establish in COBOL?
- Explain in detail what are the different data types available in COBOL ?
- Can you tell me what are the divisions in a COBOL program ?
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