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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. Given the following example, what will happen with the PUT SKIP DATA statement after the DO-loop?
PGM_A PROC OPTIONS(MAIN); DCL I FIXED SIN(31);
DCL MON CHAR (10);
DCL DAY(12) CHAP (2) INIT ('31','28','31', '30','31','30' 31','31','30' '31','30','31');
DO I = 1 TO 12;
MON = MON_FUNC(I);
PUT DATA (MON,DAY(I));
END;
PUT SKIP DATA (MON_ARR);
MON_FUNC: PROC(INP) RETURNS(CHAP(10));
DCL INP FIXED BIN (31);
DCL MON_APP(12) CHAR (10) INIT ('JANUARY ','FEBRUARY ','MARCH ', 'APRIL ','MAY
"JUNE 'JULY ''AUGUST ''SEPTEMBER','OCTOBER ','NOVEMBER ','DECEMBER ');
RETURN(MON_ARR(INP));
END;
END;

A) The compiler will issue no messages but the program will tail trying to execute the statement.
B) A table of the months of theyearwill be printed.
C) Twelve zeroes will be printed.
D) The compiler will issue a message for the statement and results are unpredictable.

2. Which of the following statements about the newest PL/l compiler is NOT suitable to convince a
stakeholder that migration to the new PL/I compiler is necessary?

A) The new compiler is necessary because current versions of DB2 and CICS only officially support
compilers which are "in service".
B) The new compiler provides new language features.
C) The new compiler takes advantage of the current machine instruction set.
D) The new compiler will tolerate more erroneous code.

3. The following program was written to copy a dataset with record length of 100 to another dataset. If this
requirement has not been fulfilled, which is the most likely reason?
DCL DDIN FILE RECORD INPUT;
DCL DDOUT FILE RECORD OUTPUT;
DCL INSTRUC CHAR(100);
DCL EOF_IN BIT(1) INIT('0'B);
ON ENDFILE(DDIN) EOF_IN = '1'B;
DO UNTIL (EOF_IN);
READ FILE (DDIN) INTO(INSTRUC);
WRITE FILE(DDOUT) FROM(INSTRUC);
END;

A) The code does not fulfill the requirement because too many records will be written to the output
dataset.
B) The code fulfills the requirement.
C) The code does not fulfill the requirement because the input structure is the same as the output
structure.
D) The code does not fulfill the requirement because the OPEN statements are missing.

4. What are the requirements on data to apply parallelization in a program?

A) It should follow the Hierarchical model.
B) It should follow the Object model.
C) It should be partition able.
D) It should follow the Relational model.

5. 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) 10 records will be written with value 1 to 10.
B) 9 records will be written with value 2 to 10.
C) 10 records will be written with first record value undefined.
D) 9 records will be written with value 1 to 9.

Solutions: