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IBM C9050-042 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: PL/I Language Fundamentals | - Data types and declarations
|
| Topic 2: IBM Enterprise PL/I Features | - Enterprise extensions
|
| Topic 3: Debugging and Optimization | - Debugging techniques
|
| Topic 4: Program Control and Logic | - Control statements
|
| Topic 5: File Handling and Data Management | - Sequential and indexed file processing
|
IBM Developing with IBM Enterprise PL/I Sample Questions:
1. What happens to STATIC variables declared in a procedure when the procedure is called recursively?
A) The values of STATIC variables from the previous invocation are saved and are available when the
current invocation ends.
B) STATIC variables are allocated and initialized at each new invocation.
C) The values of STATIC variables from the previous invocation are lost.
D) STATIC variables are allocated only once and can, therefore, be used for communication between
invocations.
2. Which of the following is NOT a characteristic of the RANDOM builtin function?
A) The values generated by RANDOM are uniformly distributed between 0 and 1, where 0 < random() < 1.
B) RANDOM can be called with an optional SEED to avoid getting repeatable results.
C) RANDOM can be called with an optional upper bound.
D) RANDOM can be called without any parameters.
3. In which of the following examples will a dummy argument be passed?
A) PGM: PROC OPTIONS(MAIN);
DCL (X,Y) FIXED BIN;
CALL C (X,Y);
B) DCLA EXT ENTRY;
DCL (X,Y) FIXED BIN;
CALL A(X,Y);
C) DCL A EXT ENTRY (FIXED, BINARY);
DCL (X,Y) FIXED BIN;
CALL A(X,Y);
D) PROC (A,B);
DCL (A,B) BIN FIXED;
END C;
END PGM;
E) DCL A EXT ENTRY (FIXED BINARY);
DCL (X,Y) FIXED BIN;
CALL A(X,Y);
4. In a multithreading environment, when can a deadlock occur between two threads, if at all?
A) It can neveroccur.
B) When they have both locked a resource that the other one requires
C) When they are operating synchronously
D) When both access the same memory area
5. 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) 4
D) 3
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: B |




