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IBM C9050-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Debugging, Testing and Maintenance | 15% | - Unit testing and code validation - Debugging techniques and tools - Compilation and listing analysis |
| Topic 2: File Processing and Database Connectivity | 20% | - Database connectivity and SQL integration - Data manipulation and transaction control - Sequential and VSAM file processing |
| Topic 3: Performance and Optimization | 15% | - Compiler options and runtime tuning - Memory and storage efficiency - I/O and processing performance |
| Topic 4: Advanced PL/I Concepts | 25% | - Structures and records - Error and exception handling - Object-oriented features in PL/I - Strings and arrays - Pointers and dynamic memory allocation |
| Topic 5: PL/I Language Fundamentals | 25% | - I/O operations and file handling - Syntax and data types - Control structures - Variables, constants, and expressions - Procedures and functions |
IBM Developing with IBM Enterprise PL/I Sample Questions:
1. A dummy argument is NOT created when a routine is called in which of the following situations?
A) With a constant as parameter
B) Where the attributes(s) of the arguments and parameters are the same
C) With the attributes(s) of the arguments and parameters are not the same
D) Using SUBSTR as one of the arguments
2. What happens after executing the following code?
DCL OUTFILE FILE RECORD OUTPUT;
DCLP PTR;
DCL I BIN FIXED(31);
DCL A BIN FIXED(31) BASED(P);
DO I = 1 TO 10;
LOCATE A FILE(OUTFILE) SET(P);
A = I;
END;
CLOSE FILE(OUTFILE);
A) 10 records will be written with first record value undefined.
B) 9 records will be written with value 1 to 9.
C) 9 records will be written with value 2 to 10.
D) 10 records will be written with value 1 to 10.
3. The following program was written to copy a dataset with record length of 100 to another dataset. If this
requirement has not been fulfilled, which is the most likely reason?
DCL DDIN FILE RECORD INPUT;
DCL DDOUT FILE RECORD OUTPUT;
DCL INSTRUC CHAR(100);
DCL EOF_IN BIT(1) INIT('0'B);
ON ENDFILE(DDIN) EOF_IN = '1'B;
DO UNTIL (EOF_IN);
READ FILE (DDIN) INTO(INSTRUC);
WRITE FILE(DDOUT) FROM(INSTRUC);
END;
A) The code does not fulfill the requirement because the input structure is the same as the output
structure.
B) The code does not fulfill the requirement because too many records will be written to the output
dataset.
C) The code fulfills the requirement.
D) The code does not fulfill the requirement because the OPEN statements are missing.
4. Given the following pseudocode example, at which label should an unconditional COMMIT be placed
assuming there is a one-to-many relationship between FIL01 and FIL02 and FlL01 contains several
thousand records?
Read record from file FIL01
1 . DO while there are records in FIL01 IF record in FIL01 specifies update THEN DO for all records
matching in FIL02 Update record in FIL02 with information from FIL01 end DO
2 . end IF
3 . Read next record in FIL01
4 . end DO
A) 1
B) 2
C) 3
D) 4
5. What will be printed, if anything, to SYSPRINT after the following statements are executed?
CALL REVERSEIT('PL/I');
(SUBSCRIPTRANGE,SIZE,STRINGSIZE):
REVERSEIT:PROC(31);
DCL(I,J) BIN FIXED(31);
DCL (S,T) CHAR(100) VARYING;
T = S;
J = 0;
I = 0;
DO I = LENGTH(S) TO 1;
J = J + 1;
SUBSTR(T,J,1) = SUBSTR(S,I,1);
END;
PUT(T);
END;
A) 'I/LP'
B) SUBSCRIPTRANGE error will be raised.
C) 'PL'I'
D) STRINGSIZE error will be raised.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: B | Question # 4 Answer: B | Question # 5 Answer: C |


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