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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced PL/I Concepts | 25% | - Pointers and dynamic memory allocation - Object-oriented features in PL/I - Strings and arrays - Error and exception handling - Structures and records |
| Topic 2: PL/I Language Fundamentals | 25% | - I/O operations and file handling - Procedures and functions - Variables, constants, and expressions - Control structures - Syntax and data types |
| Topic 3: Debugging, Testing and Maintenance | 15% | - Debugging techniques and tools - Unit testing and code validation - Compilation and listing analysis |
| Topic 4: File Processing and Database Connectivity | 20% | - Sequential and VSAM file processing - Database connectivity and SQL integration - Data manipulation and transaction control |
| Topic 5: Performance and Optimization | 15% | - I/O and processing performance - Memory and storage efficiency - Compiler options and runtime tuning |
IBM Developing with IBM Enterprise PL/I Sample Questions:
What characterizes the hierarchical data model with respect to data access?
- A. Data access can only be sequential.
- B. Data access supports tables.
- C. Data access supports parent-child relationships.
- D. Data access can only be via an index.
Correct Answer: C π³οΈ
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 project leader and her manager
- B. The person who makes the greatest demand
- C. The person who does the most PL/I development
- D. The person in the critical path
Correct Answer: D π³οΈ
What is the output of the following program?
DCL A AREA(8000);
DCL 1 STR1 BASED(P),
2 STR1_LGTH BIN FIXED(31),
2 STR_CHAR CHAR(ALLOC_LGTH REFER(STR1_LGTH));
DCL ALLOC_LGTH BINFIXED(31);
DCL I FIXED BIN(31);
DCL P PTR;
ALLOC_LGTH = 100;
DO I = 1 TO 10;
ALLOC STR1 IN(A);
END;
PUT SKIP LIST(CSTG(A));
- A. 1016
- B. 1040
- C. 8000
- D. 1056
Correct Answer: D π³οΈ
A file containing FIXED BINARY fields that is written by a PL/I program on Intel Architecture is to be read
by PL/I programs on Intel Architecture and on the mainframe. What must be changed in the program
which reads the file on Intel architecture, if anything, for it to work correctly when it run s on the
mainframe?
- A. The program must declare the FIXED BINARY fields with the attribute LITTLEENDIAN.
- B. Nothing needs to be changed.
- C. The program must declare the FIXED BINARY fields with the attribute NATIVE.
- D. The program must declare the FIXED BINARY fields with the attribute BIGEND IAN.
Correct Answer: A π³οΈ
Lt there is a direct read access to a data object with a unique key (e.g., DB2-SELECT, IMS-GU, ...),
which of the following return codes is possible?
- A. OK, end file, database not available
- B. OK, duplicate key, database not available
- C. OK, end file, not found
- D. OK, not found, database not available
Correct Answer: D π³οΈ
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