IBM Certified Application Developer C9050-042

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Simulation test system

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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. Which of the following techniques, if any, can be used to parallelize a PL/I program?

A) Parallelization is not possible in PL/I program.
B) Attach threads to pieces or work that are independent from othersB.Attach a thread to every subroutine
in the program.
C) Attach a thread to every external entry in the program.

2. Assuming there is no information about the duration or each table update and the programs are running in
a multitasking environment, which of the following options will best minimize the chance for deadlocks?

A) All programs update Table A, Table B and Table C in the same order.
B) Programs update table A, Table B and Table C in random order.
C) Program A updates Table A, Table B and Table C in the specified order, and Program B updates Table
C, Table B and Table A in the specified order.
D) Program A updates Table A, Table B and Table C in the specified order, and Program B updates Table
B, Table C and Table A in the specified order.

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

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

4. What happens after executing the following code, assuming the input file has more than 1 record?
DCL INPFILE FILE RECORD INPUT ENV(VB RECSIZE(100)); DCL P PTR;
DCL B CHAR(100) VARYING BASED(P);
DCLC CHAR(110) VARYING BASED(P);
READ FILE(INPFILE) SET(P);
C=B!! 'EXTENDED
READ FILE(INPFILE) SET(P);

A) ENDFILE condition is raised on the second read.
B) The results are unpredictable.
C) Protection exception because of the reference to B.
D) Two records are read.

5. Given the following declarations, a list of 100 elements must be created so that the element created last
can be accessed as the first element of the list. A new element is always inserted in front of the element
created before. The variable NEXT in the last element should contain the value NULL. Which of the
following pieces of code implements this?
DCL 1 NODE BASED (ANCHOR).
2 NEXT POINTER,
2 DATA FIXED BIN(31);
DCL ANCHOR POINTER;
DCL P POINTER INIT (NULL());
DCL I FIXED BIN(31);

A) I = 1 TO 100; ALLOCATE NODE; NODE.DATA = I; NODE.NEXT = P; ANCHOR = P; END;
B) DO I = 1 TO 100; P = ANCHOR; ALLOCATE NODE; NOTE.DATA = I; NODE.NEXT = P; END;
C) DO I = 1 TO 100; NODE.DATA = I; NODE.NEXT = P; ALLOCATE NODE; P = ANCHOR; END;
D) DO I = 1 TO 100; ALLOCATE NODE; NODE.DATA = I; NODE.NEXT = P; P = ANCHOR; END;

Solutions: