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Which calls are not mandatory to be executed before an MQPUT call has to be executed?

  1. MQOPEN

  2. MQCLOSE

  3. MQCONN

  4. MQPUT1
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B,D Correct answer
Explanation

Before calling MQPUT, you MUST establish a connection (MQCONN) and open the queue (MQOPEN). These are prerequisites. However, MQCLOSE is called AFTER operations complete, not before, and MQPUT1 is an alternative single-call API that doesn't need to precede MQPUT. Therefore, MQCLOSE and MQPUT1 are not mandatory pre-conditions for MQPUT.

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