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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. 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 does not fulfill the requirement because the OPEN statements are missing.
C) The code does not fulfill the requirement because the input structure is the same as the output
structure.
D) The code fulfills the requirement.

2. A software package utilizes several licensed third party software components and will be sold to multiple
customers who will also need runtime licenses. What information is LEAST appropriate to provide in a
technical operations guide?

A) The required release level or the third party software components
B) The price or the third party software components
C) The URL for the third party vendor
D) The contact information of the third party vendors

3. What will be printed, if anything, to SYSPRINT after the following statements are executed?
CALL REVERSEIT('PL/I');
(SUBSCRIPTRANGE,SIZE,STRINGSIZE):
REVERSEIT:PROC(31);
DCL(I,J) BIN FIXED(31);
DCL (S,T) CHAR(100) VARYING;
T = S;
J = 0;
I = 0;
DO I = LENGTH(S) TO 1;
J = J + 1;
SUBSTR(T,J,1) = SUBSTR(S,I,1);
END;
PUT(T);
END;

A) 'PL'I'
B) SUBSCRIPTRANGE error will be raised.
C) 'I/LP'
D) STRINGSIZE error will be raised.

4. The following function converts a character string to uppercase. What is the best way to improve the
performance?
SET_TO_UPPERCASE: PROC(CHARSTR) RETURNS (CHAR(120) VARYING);
DCL CHARSTR CHAR(120) VARYING;
DCL UCCHAR(26) INIT('ASCDEFGHIJKLMNOPQRSTUVWXYZ');
DCL LCCHAR(26) INlT('abcdefghijkImnopqrstuvxy'z');
DCL RCHAR(120) VARYING INIT(");
R = TRANSLATE(CHARSTR,UC,LC);
RETURN(R);
END SET_TO_UPPERCASE;

A) Use VALUE on the declares for UC and LC.
B) Declare variables UC and LC as STATIC.
C) Use the UPPERCASE function instead of SET_TO_UPPERCASE.
D) RETURN(TRANSLATE(CHARSTR,UC,LC)) to avoid the unnecessary assignment to R.

5. Which of the following is a typical deadlock situation?
Situation 1:
Transaction A waiting for resource_2 and Transaction B waiting for resource_1 while resource_1 is held
by Transaction C and resource_2 is held by Transaction B
Situation 2:
Transaction A waiting for resource_1 and Transaction B waiting for resource_2 while resource_1 is held
by Transaction B and resource_2 is held by Transaction C
Situation 3:
Transaction A Waiting for resource_2, Transaction B waiting for resource_3, Transaction C waiting for
resource_1 ,while resource_1 ,resource_2 and resource_3 are held by Transactions A, B and C
respectively.
Situation 4:
Transaction B waiting for resource_1 and Transaction C waiting for resource 2 while resource_1 is held
by Transaction C and resource_2 is held by Transaction A

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

Solutions: