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IBM C9050-042 Exam Syllabus Topics:

IBM Developing with IBM Enterprise PL/I Sample Questions:

Question 1

An external subroutine procedure requires 10 variables belonging to an input file and 10 variables
belonging to an output file. What is best practice in passing these variables to the procedure?

A. Declare the 20 variables EXTERNAL in both the calling program and in the procedure called and pass
no variable in the parameter list.
B. Integrate the 10 variables belonging to the input file in one structure and the 10 variables belonging to
the output file in another one and pass the addresses of them as parameters to the procedure.
C. Integrate the 20 variables in one structure and pass the address of the structure in the parameter list.
D. Pass the 20 variables individually in the parameter list.

Question 2

In which of the following cases is a performance analyzer tool NOT useful?

A. To identify the code causing a storage overlay
B. To locate program hangs and deadlocks
C. To time and tune programs
D. To show the frequency and duration of function calls

Question 3

Given the following declaration, how many bytes will be occupied by this structure under the default
alignment rules?
DCL 1 A DIM (10),
2 B FIXED BIN(31),
2 C CHAR (1)VAR;

A. 77
B. 70
C. 79
D. 80

Question 4

Given the following (incomplete) code, how is Q to be declared in order to allocate X in A?
DCL A AREA;
DCL Q ...
DCL X FIXED BIN (31) BASED (Q);
ALLOCATE X;

A. ... POINTER;
B. ... BASED(A);
C. ... OFFSET(A);
D. ... OFFSET;

Question 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 result overflow.
B. Check Y for valid numeric data.
C. Check X for valid packed data.
D. Check Z for valid packed data.

Solutions: