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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. What is the output of the following program?
DCL A AREA(8000);
DCL 1 STR1 BASED(P),
2 STR1_LGTH BIN FIXED(31),
2 STR_CHAR CHAR(ALLOC_LGTH REFER(STR1_LGTH));
DCL ALLOC_LGTH BINFIXED(31);
DCL I FIXED BIN(31);
DCL P PTR;
ALLOC_LGTH = 100;
DO I = 1 TO 10;
ALLOC STR1 IN(A);
END;
PUT SKIP LIST(CSTG(A));

A) 1016
B) 8000
C) 1040
D) 1056

2. A PL/I program performance analwer can best help identify which of the following?

A) Incorrect program logic
B) CPU hotspots and elapsed time percentages by procedure
C) Changes needed to database tables
D) Adequate code coverage

3. 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) 9 records will be written with value 1 to 9.
B) 10 records will be written with value 1 to 10.
C) 9 records will be written with value 2 to 10.
D) 10 records will be written with first record value undefined.

4. Which of the following statements is best for avoiding synchronously updating a resource?

A) Have all programs use ENQ and WAIT for a specific resource.
B) Have several programs update the resource without using ENQ.
C) Have only program A update the resource without using ENQ.
D) Lock the entire resource at start of program and release at end of program.

5. Which of the following is generally NOT an area of concern when calling a program written in another
language from PL/I?

A) Acceptable calling conventions
B) Condition handling
C) Data mapping
D) Storage management

Solutions: