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Real IBM C9050-042 practice exam questions for easy pass!
Last Updated: Sep 30, 2026
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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: PL/I Language Fundamentals | 25% | - I/O operations and file handling - Syntax and data types - Procedures and functions - Variables, constants, and expressions - Control structures |
| Topic 2: File Processing and Database Connectivity | 20% | - Data manipulation and transaction control - Sequential and VSAM file processing - Database connectivity and SQL integration |
| Topic 3: Performance and Optimization | 15% | - I/O and processing performance - Compiler options and runtime tuning - Memory and storage efficiency |
| Topic 4: Advanced PL/I Concepts | 25% | - Error and exception handling - Strings and arrays - Pointers and dynamic memory allocation - Structures and records - Object-oriented features in PL/I |
| Topic 5: Debugging, Testing and Maintenance | 15% | - Compilation and listing analysis - Unit testing and code validation - Debugging techniques and tools |
IBM Developing with IBM Enterprise PL/I Sample Questions:
Requirement:
All the characters of the CHAR(3) variable X must be tested to be numeric. Which of the following
solutions meets the requirement and does not require essential structural modifications when the
requirement is changed to the following: The first character of the CHAR(3) variable X must be tested to
be uppercase alphabetic, while the two other characters must be tested to be numeric.
- A. DCL Y PIC'999';
DCL SWITCH BIT(1) INIT('1'B);
ON CONVERSION BEGIN;
SWITCH =
ONSOURCE = '000';
END;
Y = X;
IF SWITCH
THEN ... ; /*NUMERIC*/ - B. DCL ALPHA CHAR(26) VALUE('ABCDEFGHIJKLMNOPQRSTUVWXYZ');
DCL NUM CHAR(10) VALUE('0123456789');
IF TRANSLATE(X,(26)'A'!I(10)'9'ALPHA!!NUM) = '999'
THEN ... ; /*NUMERIC*/ - C. IFX >= '000' & X <= '999'
THEN ... /*NUMERIC*/ - D. DCL NUM CHAR(10) VALUE('0l 23456789');
IF VERIFY(X,NUM) = 0
THEN ... /*NUMERIC*/
Correct Answer: B 🗳️
In which of the following groups of compiler options could all the options specified cause the compiler to
generate code which requires more time at execution?
- A. OPTIMIZE(2),DEFAULT(REORDER,NOLAXDCL,NOLAXCTL),STORAGE,MMTEMP(1000)
- B. ATTRIBUTES(FULL),XREF(FULL),DEFAULT(EVENDEC,DUMMY(UNALIGNED)),OFFSET
- C. APCH(5),BIFPREC(31),NOTESTMTUNE(5),NOSERVICE
- D. OPTIMIZE(0),NOREDUCE,PIREFIX(SIZE,SUBSCRIPTRANGE)
Correct Answer: D 🗳️
Assuming there is no information about the duration or each table update and the programs are running in
a multitasking environment, which of the following options will best minimize the chance for deadlocks?
- A. Program A updates Table A, Table B and Table C in the specified order, and Program B updates Table
C, Table B and Table A in the specified order. - B. All programs update Table A, Table B and Table C in the same order.
- C. Program A updates Table A, Table B and Table C in the specified order, and Program B updates Table
B, Table C and Table A in the specified order. - D. Programs update table A, Table B and Table C in random order.
Correct Answer: B 🗳️
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. C_STR = B_STR;
- B. SUBSTR(C_STR, 92) = B_STR;
- C. C_STR = A_STR;
- D. A_STR = B_STR;
Correct Answer: B 🗳️
In the following example how many lines, if any, will be printed?
GRAPH: PROC OPTIONS(MAIN);
DCL I FIXED BIN(31);
DCL POINTS FIXED BIN(31);
CALL INIT_POINTS;
DO I = 1 TO 100;
GET LIST(POINTS);
CALL PLOT_NEXT(POINTS);
END;
INIT_POINTS: PROC;
DCL I FIXED BIN(31);
DCL POINTS(1000) FIXED BIN (31);
DCL BAR CHAR (100) INIT((100)'*') STATIC;
DO I 1 TO 10;
POINTS(I) = I;
PUT SKIP LIST (POINTS(I),SUBSTR(BAR,1,I));
END;
RETURN;
PLOT_NEXT: ENTRY(I);
POINTS(I) = I;
PUT SKIP LIST(POINTS(I),SUBSTR(BAR,1 I));
END;
END GRAPH;
- A. 100
- B. It is unpredictable as the program will fail.
- C. 110
- D. 10
Correct Answer: B 🗳️
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