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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Debugging, Testing and Maintenance | 15% | - Debugging techniques and tools - Unit testing and code validation - Compilation and listing analysis |
| File Processing and Database Connectivity | 20% | - Sequential and VSAM file processing - Data manipulation and transaction control - Database connectivity and SQL integration |
| Advanced PL/I Concepts | 25% | - Strings and arrays - Structures and records - Object-oriented features in PL/I - Error and exception handling - Pointers and dynamic memory allocation |
| PL/I Language Fundamentals | 25% | - Procedures and functions - Variables, constants, and expressions - I/O operations and file handling - Control structures - Syntax and data types |
| Performance and Optimization | 15% | - Compiler options and runtime tuning - I/O and processing performance - Memory and storage efficiency |
IBM Developing with IBM Enterprise PL/I Sample Questions:
In which of the following cases is a performance analyzer tool NOT useful?
- A. To time and tune programs
- B. To locate program hangs and deadlocks
- C. To identify the code causing a storage overlay
- D. To show the frequency and duration of function calls
Correct Answer: C 🗳️
An external subroutine procedure requires 10 variables belonging to an input file and 10 variables
belonging to an output file. What is best practice in passing these variables to the procedure?
- A. Integrate the 10 variables belonging to the input file in one structure and the 10 variables belonging to
the output file in another one and pass the addresses of them as parameters to the procedure. - B. Integrate the 20 variables in one structure and pass the address of the structure in the parameter list.
- C. Pass the 20 variables individually in the parameter list.
- D. Declare the 20 variables EXTERNAL in both the calling program and in the procedure called and pass
no variable in the parameter list.
Correct Answer: A 🗳️
Which of the following is NOT part of the PL/I code review?
- A. Attendance of people with technical expertise
- B. Training course for the program's author
- C. Decision whether the review object is a appropriate solution
- D. Documentation of results of the review
Correct Answer: B 🗳️
A compiler listing annotated with execution counts per statement helps identify all of the following
EXCEPT
- A. Unexecuted statements and procedures
- B. Potentially miscoded conditions in IFs, WHEREs, WHILEs, and UNTILs
- C. Calls to library routines
- D. Opportunities for code optimization
Correct Answer: C 🗳️
Which of the following would a non-technical manager be LEAST interested in regarding migration to
Enterprise PL/I?
- A. Which Enterprise compiler options should be specified
- B. Whether training programs would be needed
- C. Amount of computer resources needed for the conversion
- D. How many programs would be affected and the effort required
Correct Answer: A 🗳️
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