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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Performance and Optimization | 15% | - I/O and processing performance - Compiler options and runtime tuning - Memory and storage efficiency |
| File Processing and Database Connectivity | 20% | - Data manipulation and transaction control - Database connectivity and SQL integration - Sequential and VSAM file processing |
| PL/I Language Fundamentals | 25% | - I/O operations and file handling - Variables, constants, and expressions - Procedures and functions - Control structures - Syntax and data types |
| Debugging, Testing and Maintenance | 15% | - Unit testing and code validation - Compilation and listing analysis - Debugging techniques and tools |
| Advanced PL/I Concepts | 25% | - Object-oriented features in PL/I - Strings and arrays - Error and exception handling - Pointers and dynamic memory allocation - Structures and records |
IBM Developing with IBM Enterprise PL/I Sample Questions:
Given the following code, what measure will improve stability?
S1: PROC (I) RETURNS(CHAR(10));
DCL I BIN FIXED (15);
DCL T (-1:1) CHAR(10) INIT('NOTFOUND' ,'OK'.'ENDFILE');
RETURN(T(l)); END S1;
- A. Check the length of the RETURN value.
- B. Check, if the value of I is nositive.
- C. Check, if the value of I is within T's bounds.
- D. Check I for valid numeric data.
Correct Answer: C 🗳️
Which of the following is NOT a builtin subroutine which supports Logical Unit of Work?
- A. PLIREST
- B. PLILUW
- C. PLICKPT
- D. PLICANC
Correct Answer: B 🗳️
Which compiler option causes the compiler to flag any IF, WHILE, UNTIL and WHEN clauses that do not
have the attributes BIT(1) NONVARYING?
- A. RULES(NOLAXWHILE)
- B. RULES(NOLAXUNTIL)
- C. RULES(NOLAXIF)
- D. RULES(NOLAXWHEN)
Correct Answer: C 🗳️
Which of the following is LEAST likely to be performed by an online application?
- A. Transaction processing
- B. Checkpoint/restart logic
- C. End user interaction
- D. Sorting
Correct Answer: B 🗳️
When a program reads a variable record format dataset via LOCATE mode, what happens?
- A. READ pointer points to the length bytes in the buffer.
- B. READ pointer points to first data byte in the buffer.
- C. The ENDFILE condition is never raised.
- D. READ data is placed in specified area.
Correct Answer: B 🗳️
