IBM C9050-042 - Developing with IBM Enterprise PL/I
- Exam Code: C9050-042
- Exam Name: Developing with IBM Enterprise PL/I
- Updated: Oct 29, 2026
- Q & A: 140 Questions and Answers
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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: File Processing and Database Connectivity | 20% | - Data manipulation and transaction control - Sequential and VSAM file processing - Database connectivity and SQL integration |
| Topic 2: Performance and Optimization | 15% | - Compiler options and runtime tuning - I/O and processing performance - Memory and storage efficiency |
| Topic 3: Debugging, Testing and Maintenance | 15% | - Unit testing and code validation - Debugging techniques and tools - Compilation and listing analysis |
| Topic 4: Advanced PL/I Concepts | 25% | - Error and exception handling - Structures and records - Object-oriented features in PL/I - Pointers and dynamic memory allocation - Strings and arrays |
| Topic 5: PL/I Language Fundamentals | 25% | - I/O operations and file handling - Procedures and functions - Syntax and data types - Control structures - Variables, constants, and expressions |
IBM Developing with IBM Enterprise PL/I Sample Questions:
Question #1
Given the following declarations, which is the WORST way of setting D from 5?
DCL 1 S,
2 A(100) CHAR(1),
2 B(100) CHAR(2),
2 C(100) CHAR(3);
S = "; DCL D CHAR(600);
DCLI BIN FIXED(31);
- A. D = STRING(S);
- B. D = STRING(A) !! STRING(S) !! STRING(C);
- C. DO I = 1 TO 100;
SUBSTR(D,I,1) = S.A(l);
SUBSTR(D,1 01 + ((I-1) *2),2) = S.B(I);
SUBSTR(D,301 + ((I-1) *3),3) = S.C(I);
END; - D. CALL PLIOVER(ADDR(D)ADDR(S),600);
Correct Answer: C 🗳️
Question #2
Which of the following is NOT a builtin subroutine which supports Logical Unit of Work?
- A. PLILUW
- B. PLICKPT
- C. PLIREST
- D. PLICANC
Correct Answer: A 🗳️
Question #3
In the following example, what value will be written to SYSPRINT, if anything, by the PUT statement in
PGM_A?
PGM_A: PROC;
DCL INPARM CHAR (12) INIT('FIRST CALL? ');
DCL P_OUT PTR;
DCL OUTPARM CHAR (10) BASED (P_OUT);
DCL PGM_B ENTRY (CHAR(12),PTR) EXTEPNAL;
CALL PGM_B (INPARM,P_OUT);
IF OUTPARM = 'YES' THEN
DO;
INPARM = 'FOLLOW ON';
CALL PGM_B (INPARM,P_OUT);
END;
ELSE
DO;
INPARM = 'NORMAL CALL';
CALL PGM_B (INPARM,P_OUT);
END;
PUT SKIP LIST(OUTPARM);
END;
PGM_B: PROC(INPARM,P_OUT);
DCL INPARM CHAR (12);
DCL P_OUT PTR;
DCL OUTPARM CHAR (12) STATIC INIT(");
P_OUT = ADDR(OUTPARM);
IF INPARM = 'FIRST CALL? ' THEN
OUTPARM = 'YES'; ELSE
IF OUTPARM = " THEN
OUTPARM = 'FIRST CALL';
END;
- A. The results are unpredictable.
- B. blanks
- C. 'FIRST CALL'
- D. 'YES'
Correct Answer: D 🗳️
Question #4
Which of the following will definitely NOT cause an unresolved external entry?
- A. The main procedure name matching the binder or load module 'name'
- B. An incorrect DECLARE for the external entry
- C. A mismatch in names between the CALL and the actual procedure
- D. Missing library at link time
Correct Answer: A 🗳️
Question #5
Requirement:
If the value of the numeric variable I is 1 it needs to be changed to 2 and vice versa. In all other cases it
must remain unchanged. Which of the following solutions meets the requirement and does not require
essential structural modifications when the requirement is changed to the following: If the value of the
numeric variable I is 512 it needs to be changed to 731 and if the value is 814 it needs to be changed to 5.
In all other cases it must be set to 111.
- A. lF I = 1 ! 1 = 2
THEN I = 3 - I; - B. DCL ONETWO(2) BIN FIXED(15) INIT(2,1);
IF I = 1! I = 2
THEN I = ONETWO(I); - C. SELECT (I);
WHEN(1) I = 2;
WHEN(2) I = 1;
OTHER;
END; - D. IF I = 1 THEN I = 2;
IF I = 2 THEN I = 1;
Correct Answer: C 🗳️
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