IBM C9050-042 : Developing with IBM Enterprise PL/I

C9050-042 real exams

Exam Code: C9050-042

Exam Name: Developing with IBM Enterprise PL/I

Updated: Aug 16, 2026

Q & A: 140 Questions and Answers

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IBM C9050-042 Exam Syllabus Topics:

SectionObjectives
Topic 1: PL/I Language Fundamentals- Data types and declarations
  • 1. Arrays and structures
    • 2. Fixed and floating-point data types
      - Basic syntax and program structure
      • 1. Program compilation and execution flow
        • 2. Identifiers, keywords, and operators
          Topic 2: IBM Enterprise PL/I Features- Enterprise extensions
          • 1. Built-in functions and system interfaces
            • 2. Error handling and exception control
              Topic 3: Debugging and Optimization- Debugging techniques
              • 1. Runtime diagnostics and tracing
                • 2. Performance tuning basics
                  Topic 4: Program Control and Logic- Control statements
                  • 1. Conditional logic (IF, SELECT)
                    • 2. Loops and iteration
                      Topic 5: File Handling and Data Management- Sequential and indexed file processing
                      • 1. File input/output operations
                        • 2. Record handling and buffers

                          IBM Developing with IBM Enterprise PL/I Sample Questions:

                          1. What happens to STATIC variables declared in a procedure when the procedure is called recursively?

                          A) The values of STATIC variables from the previous invocation are saved and are available when the
                          current invocation ends.
                          B) STATIC variables are allocated and initialized at each new invocation.
                          C) The values of STATIC variables from the previous invocation are lost.
                          D) STATIC variables are allocated only once and can, therefore, be used for communication between
                          invocations.


                          2. Which of the following is NOT a characteristic of the RANDOM builtin function?

                          A) The values generated by RANDOM are uniformly distributed between 0 and 1, where 0 < random() < 1.
                          B) RANDOM can be called with an optional SEED to avoid getting repeatable results.
                          C) RANDOM can be called with an optional upper bound.
                          D) RANDOM can be called without any parameters.


                          3. In which of the following examples will a dummy argument be passed?

                          A) PGM: PROC OPTIONS(MAIN);
                          DCL (X,Y) FIXED BIN;
                          CALL C (X,Y);
                          B) DCLA EXT ENTRY;
                          DCL (X,Y) FIXED BIN;
                          CALL A(X,Y);
                          C) DCL A EXT ENTRY (FIXED, BINARY);
                          DCL (X,Y) FIXED BIN;
                          CALL A(X,Y);
                          D) PROC (A,B);
                          DCL (A,B) BIN FIXED;
                          END C;
                          END PGM;
                          E) DCL A EXT ENTRY (FIXED BINARY);
                          DCL (X,Y) FIXED BIN;
                          CALL A(X,Y);


                          4. In a multithreading environment, when can a deadlock occur between two threads, if at all?

                          A) It can neveroccur.
                          B) When they have both locked a resource that the other one requires
                          C) When they are operating synchronously
                          D) When both access the same memory area


                          5. Given the following pseudocode example, at which label should an unconditional COMMIT be placed
                          assuming there is a one-to-many relationship between FIL01 and FIL02 and FlL01 contains several
                          thousand records?
                          Read record from file FIL01
                          1 . DO while there are records in FIL01 IF record in FIL01 specifies update THEN DO for all records
                          matching in FIL02 Update record in FIL02 with information from FIL01 end DO
                          2 . end IF
                          3 . Read next record in FIL01
                          4 . end DO

                          A) 1
                          B) 2
                          C) 4
                          D) 3


                          Solutions:

                          Question # 1
                          Answer: D
                          Question # 2
                          Answer: C
                          Question # 3
                          Answer: C
                          Question # 4
                          Answer: B
                          Question # 5
                          Answer: B

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