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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. What characterizes the hierarchical data model with respect to data access?

A) Data access supports parent-child relationships.
B) Data access supports tables.
C) Data access can only be sequential.
D) Data access can only be via an index.

2. What is a program specification document?

A) The pseudocode of the program
B) A description of how the program does its work
C) A description of what the program does and how it can be used
D) The history of changes of the program and how it was used

3. Which of the following may be an advantage of the BEGIN OPTIONS (INLINE) statement?

A) The program uses less stack storage.
B) The program runs faster because all variables declared inside the BEGIN block are already allocated
when the block containing the BEGINblock is entered.
C) The program uses less heap storage.
D) The code runs faster because more variables will be optimized in the BEGINblock.

4. What will be printed to SYSPRINT after the following statements?
DCLZZ9 PlC 'ZZ9' INIT(-1);
DCL A CHAR(10) INIT(LOW(10));
DCL B CHAR(10) INIT('PL/l');
SELECT;
WHEN(A = LOW(12))PUT('CASE 1');
WHEN(SUBSTR(B11.3) = 'PL/I') PUT('CASE 2');
WHEN(ZZ9 < 0)PUT('CASE 3');
OTHERPUT('CASE 4');
END;

A) CASE 2
B) CASE 1
C) CASE 4
D) CASE 3

5. Given the following code, what measure will improve stability?
S1: PROC (I) RETURNS(CHAR(10));
DCL I BIN FIXED (15);
DCL T (-1:1) CHAR(10) INIT('NOTFOUND' ,'OK'.'ENDFILE');
RETURN(T(l)); END S1;

A) Check I for valid numeric data.
B) Check the length of the RETURN value.
C) Check, if the value of I is nositive.
D) Check, if the value of I is within T's bounds.

Solutions: