- Exam Code: C9050-042
- Exam Name: Developing with IBM Enterprise PL/I
- Certification Provider: IBM
- Corresponding Certification:IBM Certified Application Developer
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IBM C9050-042 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: IBM Enterprise PL/I Features | - Enterprise extensions
|
| Topic 2: Debugging and Optimization | - Debugging techniques
|
| Topic 3: PL/I Language Fundamentals | - Data types and declarations
|
| Topic 4: File Handling and Data Management | - Sequential and indexed file processing
|
| Topic 5: Program Control and Logic | - Control statements
|
IBM Developing with IBM Enterprise PL/I Sample Questions:
Prerequisite:
A sorted input dataset with record length 100 contains at least one record for all the values '1', '2', '3' in
the first byte. The applied sort criteria is 1,100,ch,a.
Requirements:
1 .) All records with '1' in the first byte must be ignored.
2 .) All records with '2' in the first byte must be written to the output dataset.
3 .) If there is a '3' in the first byte, the program must not read more records.
4 .) The program must not abend or loop infinitely.
If the following code does not fulfill the requirements above, which would be the reason, if any?
DCL DDIN FILE RECORD INPUT;
DCL DDOUT FILE RECORD OUTPUT;
DCL 1 INSTRUC,
3 A CHAR(1),
3 * CHAR(99);
DCL EOF_IN BIT(1) INIT('0'B);
DCL (Z1,Z2,Z3,ZO) BIN FIXED(31) INIT(0);
ON ENDFILE(DDIN) EOF IN = '1'B;
READ FILE(DDIN) INTO (INSTRUC);
IF EOF_IN THEN LEAVE;
SELECT(INSTRUC .A);
WHEN('1') DO;
Z1 += Z1;
ITERATE LAB;
END;
WHEN('3') DO;
Z3 = Z3 + 1;
LEAVE;
END;
WHEN('2') DO;
Z2 = Z2 + 1;
WRITE FILE(DDOUT) FROM(INSTRUC);
END;
OTHER DO;
ZO = ZO + 1;
PUT SKIP LIST(INSTRUC.A);
END; END;/*SELECT*/
END;/*LOOP*/
- A. The code does not fulfill the requirement, because the program will loop infinitely.
- B. The code fulfills the requirement.
- C. The code does not fulfill the requirement, because not all records with '2' in the first byte will be written
to the output dataset. - D. The code does not fulfill the requirement, because the READ iteration will not be left when the first
record with '3' in the first byte appears.
Correct Answer: D 🗳️
Which of the following structures will NOT contain padding btes if the PL/I default for alignment is applied?
- A. DCL 1 A,
2 B FIXED BIN(31),
2 C CHAR (2) VAR ALIGNED,
2 D FIXED BIN(31),
2 E FIXED DEC (1),
2 F CHAR (3) YAP; - B. DCL 1 A,
2 B FIXED BIN(31),
2 C CHAR (2) VAP,
2 D FIXED BIN(31),
2 E FIXED DEC (1),
2 F CHAR (3) VAR ALIGNED; - C. DCL 1 A,
2 B FIXED BIN(31),
2 C CHAR (2) VAR,
2 D FIXED BIN(31),
2 E FIXED DEC (1),
2 F FLOAT DEC (6); - D. DCL 1 A ALIGNED,
2 B FIXED BIN(31),
2 C CHAR (2) VAR,
2 D FIXED BIN(31),
2 E FIXED DEC (1),
2 F CHAR (3) VAR,
Correct Answer: A 🗳️
A given PL/I program has a big nesting depth. Which of the following measures will help to reduce the
nesting depth in most cases?
- A. Avoiding OTHER clauses
- B. Avoiding ELSE clauses
- C. Using SELECT constructs instead of If-THEN-ELSE
- D. Using DO-WHILE as the only loop technique
Correct Answer: C 🗳️
What characterizes the relational model with respect to data storage?
- A. Data is stored in hierarchies.
- B. Data is stored in segments.
- C. Data is stored in variable length and format.
- D. Data is stored in tables.
Correct Answer: D 🗳️
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 project leader and her manager
- B. The person in the critical path
- C. The person who makes the greatest demand
- D. The person who does the most PL/I development
Correct Answer: B 🗳️
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