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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| File Processing and Database Connectivity | 20% | - Sequential and VSAM file processing - Database connectivity and SQL integration - Data manipulation and transaction control |
| PL/I Language Fundamentals | 25% | - Variables, constants, and expressions - Procedures and functions - Syntax and data types - I/O operations and file handling - Control structures |
| Advanced PL/I Concepts | 25% | - Error and exception handling - Object-oriented features in PL/I - Structures and records - Strings and arrays - Pointers and dynamic memory allocation |
| Debugging, Testing and Maintenance | 15% | - Unit testing and code validation - Compilation and listing analysis - Debugging techniques and tools |
| Performance and Optimization | 15% | - Memory and storage efficiency - I/O and processing performance - Compiler options and runtime tuning |
IBM Developing with IBM Enterprise PL/I Sample Questions:
1. Which software quality describes the ability of software to cooperate with other applications?
A) Interoperability
B) Reusability
C) Scalability
D) Portability
2. Which of the following is a best practice to make debugging easier?
A) Use the runtime option STORAGE(00,,00,0K)
B) Have the calling program test the return code after the call.
C) CALL PLIDUMP('TFCHAB','Spot Dump'); at key points in the program logic.
D) Use a variable updated with the program name.
3. 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 BIGEND IAN.
D) The program must declare the FIXED BINARY fields with the attribute NATIVE.
4. Given the following code, which procedure call would cause the "Pointer corrupted!" message to be output
provided that the PL/I compile time option CHECK(STORAGE) has been specified?
DCLX FIXED BIN(31) BASED (P);
DCL Y CHAR (5) BASED (P);
DCL P POINTER;
SUB: PROCEDURE (P);
DCL P POINTER;
if CHECKSTG(P) THEN PUT ('Pointer 0k!');
ELSE PUT ('Pointer corrupted!');
END;
A) ALLOCATEY;
Y = 'ABCDE';
CALL SUB (ADDR(X));
B) P = ALLOCATE (100);
Y = 'ABCDE';
CALL SUB (ADDR(X));
C) ALLOCATEX;
Y = 'ABCD';
CALL SUB (P);
D) ALLOCATEY;
Y = 'ABCDE';
CALL SUB (P);
5. When a program reads a variable record format dataset via LOCATE mode, what happens?
A) READ pointer points to first data byte in the buffer.
B) The ENDFILE condition is never raised.
C) READ data is placed in specified area.
D) READ pointer points to the length bytes in the buffer.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: A |
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