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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Advanced PL/I Concepts | 25% | - Structures and records - Strings and arrays - Object-oriented features in PL/I - Pointers and dynamic memory allocation - Error and exception handling |
| Performance and Optimization | 15% | - Compiler options and runtime tuning - I/O and processing performance - Memory and storage efficiency |
| PL/I Language Fundamentals | 25% | - Syntax and data types - I/O operations and file handling - Procedures and functions - Control structures - Variables, constants, and expressions |
| Debugging, Testing and Maintenance | 15% | - Unit testing and code validation - Debugging techniques and tools - Compilation and listing analysis |
| File Processing and Database Connectivity | 20% | - Sequential and VSAM file processing - Database connectivity and SQL integration - Data manipulation and transaction control |
IBM Developing with IBM Enterprise PL/I Sample Questions:
1. Given the following code, which set of statements will insert the new element into the doublylinked list
after the element pointed to by P?
DCL1X BASED,
2 FORWARD POINTER,
2 BACKWARD POINTER,
2 DATA FIXED BIN (31);
ALLOC X SET(Q);
A) Q->FORWARD = P-> FORWARD;
Q->BACKWARD = P;
P->FORWARD->BACKWARD = P;
P->FORWARD = Q;
B) P->FORWARD->BACKWARD = Q;
P->FORWARD = Q;
Q->FORWARD = P->FORWARD;
Q->BACKWARD = P;
C) Q->FORWARD = P;
Q->BACKWARD = P->BACKWARD;
P->FORWARD = Q
P->BACKWARD = Q;
D) Q->FORWARD = P->FORWARD;
Q->BACKWARD = P;
P->FORWARD = Q;
P->FORWARD->BACKWARD = Q;
2. 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 person who does the most PL/I development
B) The project leader and her manager
C) The person who makes the greatest demand
D) The person in the critical path
3. Which of the following may be an advantage of the BEGIN OPTIONS (INLINE) statement?
A) The program uses less stack storage.
B) The program uses less heap storage.
C) The code runs faster because more variables will be optimized in the BEGINblock.
D) The program runs faster because all variables declared inside the BEGIN block are already allocated
when the block containing the BEGINblock is entered.
4. What will be printed to SYSPRINT after the following statements?
DCLZZ9 PlC 'ZZ9' INIT(-1);
DCL A CHAR(10) INIT(LOW(10));
DCL B CHAR(10) INIT('PL/l');
SELECT;
WHEN(A = LOW(12))PUT('CASE 1');
WHEN(SUBSTR(B11.3) = 'PL/I') PUT('CASE 2');
WHEN(ZZ9 < 0)PUT('CASE 3');
OTHERPUT('CASE 4');
END;
A) CASE 4
B) CASE 3
C) CASE 2
D) CASE 1
5. Given the following code, what measure will NOT improve stability?
S1: PROC (X,Y,Z);
DCL X DEC FIXED (5);
DCL Y PlC '99999';
DCL Z DEC FIXED (5);
Z = X + Y;
END;
A) Check X for valid packed data.
B) Check Z for valid packed data.
C) Check Y for valid numeric data.
D) Check result overflow.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: A | Question # 5 Answer: B |







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