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

C9050-042 real exams

Exam Code: C9050-042

Exam Name: Developing with IBM Enterprise PL/I

Updated: Aug 19, 2026

Q & A: 140 Questions and Answers

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IBM C9050-042 Exam Syllabus Topics:

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

                          IBM Developing with IBM Enterprise PL/I Sample Questions:

                          1. A mainframe project is behind schedule and a project leader has only one copy of a PC-based PL/I
                          compiler available for distribution to team members who are all eager to use it. Optimally, to whom should
                          it be provided first?

                          A) The person in the critical path
                          B) The person who does the most PL/I development
                          C) The project leader and her manager
                          D) The person who makes the greatest demand


                          2. Which of the following compiler options should be checked first when addressing performance issues in a
                          PL/I program?

                          A) OPT and DEFAULT
                          B) ARCH and MAXSTMT
                          C) ATTRIBUTES and LIST
                          D) RENT and MAXMEM


                          3. Given the lollowing declarations, what statement will raise STRINGSIZE condition if enabled?
                          DCLA_STR CHAR (100) VARYING;
                          DCLB_STR CHAR(10) STATIC;
                          DCL C_STR CHAR (100);

                          A) SUBSTR(C_STR, 92) = B_STR;
                          B) C_STR = A_STR;
                          C) C_STR = B_STR;
                          D) A_STR = B_STR;


                          4. Requirement:
                          The function LEAPYEAR evaluates a given 4-digit number and returns '1'B if it is a leap year, '0'B if it is
                          not. This function is supposed to work for the years 2004 to 2015.
                          Leap years occur every four years, except for years ending in 00 that are not divisible by 400. Which of
                          the following solutions meets the requirement and does NOT need to be changed if the requirement
                          changes to: The function is supposed to work for the years 1900 to 3000.

                          A) LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));
                          DCL YEAR PlC '9999';
                          DCL (MOD,VERIFY) BUILTIN;
                          SELECT;
                          WHEN (VERIFY(YEAR,'0l23456789') ^= 0) RETURN('0'B);
                          WHEN (MOD(YEAR,100) = 0)RETURN('0'B);
                          WHEN (MOD(YEAR,4) = 0)RETURN('1'B);
                          OTHERRETURN('0'B);
                          END;
                          END LEAPYEAR;
                          B) LEAPYEAR:PROC(YEAR) RETURNS(BIT(1));
                          DCL YEAR PlC '9999';
                          DCL (MOD,VERIFY) BUILTIN;
                          SELECT;
                          WHEN (VERIFY(YEAR '0123456769') ^= 0) RETURN('0'B); WHEN (MOD(YEAR,100) = 0)
                          RETURN('0'B);
                          WHEN (MOD(YEAR,400) = 0) RETURN('1'B);
                          WHEN (MOD(YEAR,4) = 0) RETURN('1'B);
                          OTHERRETURN('0'B);
                          END;
                          END LEAPYEAR;
                          C) LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));
                          DCL YEAR PlC '9999';
                          DCL VERIFY BUILTIN;
                          IFVERIFY(YEAR,0123456789)^= 0 THEN RETURN('0'B);
                          SELECT(YEAR);
                          WHEN (2004) RETURN('1'B);
                          WHEN (2008) RETURN('1'B);
                          WHEN (2012) RETURN('1'B);
                          OTHER RETURN('0'B);
                          END;
                          END LEAPYEAR;
                          D) LEAPYEAR:PROC(YEAR) RETURNS(BIT(1));
                          DCL YEAR PlC '9999';
                          DCL (MOD,VERIFY) BUILTIN;
                          SELECT;
                          WHEN (VERIFY(YEAR '0123456789') ^= 0) RETURN('0'B);
                          WHEN (MOD(YEAR,400) = 0) RETURN('l'B); WHEN (MOD(YEAR,100) = 0) RETURN('0'B);
                          WHEN (MOD(YEAR,4) = 0) RETURN('1'B); OTHER RETURN('0'B);
                          END;
                          END LEAPYEAR;


                          5. Which of the following declarations uses the LEAST memory?
                          DCL 1 S1 ALIGNED,
                          2 A CHAR(3),
                          2 B BIN FIXED(31),
                          2 C DEC FIXED(5),
                          2 D BIN FIXED(15);
                          DCL 1 S2 UNALIGNED,
                          2 A CHAR(3),
                          2 B BIN FIXED(31),
                          2 C DEC FIXED(5),
                          2 D BIN FIXED(15);
                          DCL 1 S3 ALIGNED,
                          2 B BIN FIXED(31),
                          2 A CHAR(3),
                          2 D BIN FIXED(15),
                          2 C DEC FIXED(5);
                          DCL 1 S4 ALIGNED,
                          2 D BIN FIXED(15),
                          2 A CHAR(3),
                          2 B BIN FIXED(31),
                          2 C DEC FIXED(5);

                          A) S1
                          B) S3
                          C) S2
                          D) S4


                          Solutions:

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

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