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IBM C9050-042 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: File Handling and Data Management | - Sequential and indexed file processing
|
| Topic 2: Debugging and Optimization | - Debugging techniques
|
| Topic 3: IBM Enterprise PL/I Features | - Enterprise extensions
|
| Topic 4: PL/I Language Fundamentals | - Data types and declarations
|
| Topic 5: Program Control and Logic | - Control statements
|
IBM Developing with IBM Enterprise PL/I Sample Questions:
Question 1
Which of the following is a best practice to make debugging easier?
A. Use a variable updated with the program name.
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 the runtime option STORAGE(00,,00,0K)
Question 2
Which of the following compile list sections would be used to find the location of a static variable in a
dump?
A. Source Listing
B. Attribute/Xref Table
C. Storage Offset Listing
D. Table of Offsets and Statement Numbers
Question 3
A module which is serially reusable has which of the following characteristics?
A. Must contain the necessary logic to reset control variables and data areas at entry or exit and a second
task may not enter the module until the first task has finished
B. All or part of it may be replaced at any time by the operating system
C. Is designed for concurrent execution by multiple tasks
D. Is intended for single use only and must be refreshed from disk before it can be invoked again
Question 4
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. DO I = 1 TO 100; NODE.DATA = I; NODE.NEXT = P; ALLOCATE NODE; P = ANCHOR; END;
C. DO I = 1 TO 100; P = ANCHOR; ALLOCATE NODE; NOTE.DATA = I; NODE.NEXT = P; END;
D. I = 1 TO 100; ALLOCATE NODE; NODE.DATA = I; NODE.NEXT = P; ANCHOR = P; END;
Question 5
Which code should NOT be split out into separate subroutines?
A. Dead code in a program.
B. Redundant code in a group otprograms.
C. Redundant code in a program.
D. Code which must be available on different platforms.
Solutions:
| Question 1 Answer: C | Question 2 Answer: C | Question 3 Answer: A | Question 4 Answer: A | Question 5 Answer: A |








