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Mainframe JCL and COBOL Quiz
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Which of the following files can be OPENed in all the 4 modes? The four modes are INPUT, I-O, OUTPUT and EXTEND
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A
All of the above
💡 Explanation:
In COBOL, INDEXED, RELATIVE, and SEQUENTIAL files can all be opened in any of the four open modes: INPUT, OUTPUT, I-O, and EXTEND, depending on the processing requirements.