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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced PL/I Concepts | 25% | - Error and exception handling - Pointers and dynamic memory allocation - Strings and arrays - Structures and records - Object-oriented features in PL/I |
| Topic 2: File Processing and Database Connectivity | 20% | - Sequential and VSAM file processing - Database connectivity and SQL integration - Data manipulation and transaction control |
| Topic 3: Performance and Optimization | 15% | - Memory and storage efficiency - I/O and processing performance - Compiler options and runtime tuning |
| Topic 4: PL/I Language Fundamentals | 25% | - Procedures and functions - Syntax and data types - I/O operations and file handling - Control structures - Variables, constants, and expressions |
| Topic 5: Debugging, Testing and Maintenance | 15% | - Unit testing and code validation - Debugging techniques and tools - Compilation and listing analysis |
IBM Developing with IBM Enterprise PL/I Sample Questions:
Input to a SORT routine requires the starting position of each field to be sorted. Which of the following
calculates a value of 5 for field B?
DCL 1 S,
2 A CHAR(4),
2 B BIN FIXED(31);
- A. POINTERDIFF(ADDR(S), ADDR(S.B))
- B. POINTERDIFF(ADDR(S.B),ADDR(S)) + 1
- C. POINTERDIFF(ADDR(S), ADDR(S.B)) + 1
- D. POINTERDIFF(ADDR(S.B), ADDR(S))
Correct Answer: B 🗳️
What are the requirements on data to apply parallelization in a program?
- A. It should be partition able.
- B. It should follow the Object model.
- C. It should follow the Hierarchical model.
- D. It should follow the Relational model.
Correct Answer: A 🗳️
Given the following declarations, a list of 100 elements must be created so that the element created last
can be accessed as the first element of the list. A new element is always inserted in front of the element
created before. The variable NEXT in the last element should contain the value NULL. Which of the
following pieces of code implements this?
DCL 1 NODE BASED (ANCHOR).
2 NEXT POINTER,
2 DATA FIXED BIN(31);
DCL ANCHOR POINTER;
DCL P POINTER INIT (NULL());
DCL I FIXED BIN(31);
- A. DO I = 1 TO 100; ALLOCATE NODE; NODE.DATA = I; NODE.NEXT = P; P = ANCHOR; END;
- B. I = 1 TO 100; ALLOCATE NODE; NODE.DATA = I; NODE.NEXT = P; ANCHOR = P; END;
- C. DO I = 1 TO 100; P = ANCHOR; ALLOCATE NODE; NOTE.DATA = I; NODE.NEXT = P; END;
- D. DO I = 1 TO 100; NODE.DATA = I; NODE.NEXT = P; ALLOCATE NODE; P = ANCHOR; END;
Correct Answer: A 🗳️
Which software quality describes the ability of software to cooperate with other applications?
- A. Interoperability
- B. Scalability
- C. Portability
- D. Reusability
Correct Answer: A 🗳️
PL/I programs which have been written under Intel architecture are now to be recompiled and run on the
mainframe. What will happen to the programs during compilation and execution?
- A. They will not compile correctly on mainframe because ASCII has no NOT sign.
- B. They will not run correctly because the byte order on mainframe is bigendian.
- C. They can be recompiled unchanged and will run correctly.
- D. They may have to be changed before they run correctly on the mainframe.
Correct Answer: D 🗳️
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