C9050-042 Exam Training Practice Tests (IBM Developing with IBM Enterprise PL/I)]

Question 1

Lt there is a direct read access to a data object with a unique key (e.g., DB2-SELECT, IMS-GU, ...),
which of the following return codes is possible?

A. OK, end file, not found B. OK, end file, database not available C. OK, duplicate key, database not available D. OK, not found, database not available

Correct Answer: D

Question 2

Given the following code, which is the only valid way to convert Q to P?
DCL Q OFFSET;
DCL P POINTER;
DCLX CHAR(100)BASED;
DCL A AREA(6000);
ALLOC X SET(Q) IN(A);

A. P = ADDR(A) + Q; B. P = Q; C. P = POINTERVALUE(Q); D. P = POINTER(Q,A);

Correct Answer: D

Question 3

What would the attribute table in a compile list be used for when looking at the variable in a dump?

A. Find name of variable B. Find where variable is used C. Find hex offset of variable D. Find variable attributes

Correct Answer: D

Question 4

Which of the following best describes an atomic transaction?

A. If one part of the transaction fails, the remainder may still be processed B. Referential Integrity is maintained in the database C. Only valid data will be written to database D. The database modifications must follow an 'all or nothing' rule

Correct Answer: D

Question 5

Given the following code, which call will pass a dummy argument?
PROG: PROC OPTIONS(MAIN);
DCL SUM01 DEC FIXED(5,0) INIT (7);
DCL SUM02 DEC FIXED(9,0) INIT (999);
CALL SUBA(SUM01,
SUM02);
CALL SUSB(SUM01,
SUM02);
CALL SUBC(SUM01,
SUM02);
CALL SUBD(SUM01,
SUM02);
SUBA PROC( PRM1,
PRM2);
DCL PRM1 DEC FIXED (5,0) BYVALUE,
PRM2 DEC FIXED (9,0);
END SUBA;
SUBB:PROC( PRM1,
PRM2);
DCL PRM1 DEC FIXED (5,0),
PRM2 DEC FIXED (9,0);
END SUBD;
SUBC: PROC( PRM 1,
PRM2);
DCL PRM1 BIN FIXED (15,0),
PRM2 DEC FIXED (9,0);
END SUBC;
SUBD:PROC( PRM 1,
PRM2);
DCL PRM1 DEC FIXED(5,0) BYADDR,
PRM2 DEC FIXED (9,0) SYADDP;
END SUBD;
END PROG;

A. CaII to SUBB B. CaII to SUBD C. CaII to SUBC D. Call to SUBA

Correct Answer: C

Question 6

What is a program specification document?

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

Correct Answer: D

Question 7

A mainframe project is behind schedule and a project leader has only one copy of a PC-based PL/I
compiler available for distribution to team members who are all eager to use it. Optimally, to whom should
it be provided first?

A. The project leader and her manager B. The person in the critical path C. The person who makes the greatest demand D. The person who does the most PL/I development

Correct Answer: B

Question 8

Program A calls program B with PC as a parameter defined BIN FIXED (31 .0). Program B sets PC as
follows:
0 OK
4 WARNING
8 ERROR
Which of the following is the most appropriate statement for testing the PC variable?

A. IF (RC >4) THEN PUT SKIP LIST('ERROR IN B');
ELSE PUT SKIP LIST('UNKNOWN VALUE FROM B'); B. IF (RC ^= 0) & (RC ^= 4) THEN PUT SKIP LIST('ERROR IN B');
ELSE IF RC> 8 THEN PUT SKIP LIST('UNKNOWN VALUE FROM B); C. SELECT (RC);
WHEN (0, 4);
OTHERWISE
PUT SKIP LIST('UNKNOWN VALUE FROM B');
END; D. SELECT (RC); WHEN (0,4); WHEN (8) PUT SKIP LIST ('ERROR IN B');
OTHERWISE PUT SKIP LIST('UNKNOWN VALUE FROM B');
END;

Correct Answer: D

Question 9

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

Correct Answer: D

Question 10

Which of the following is LEAST likely to be performed by a batch program?

A. Production of pay checks B. Sorting C. Sequential file processing D. User interaction

Correct Answer: D

IBM Developing with IBM Enterprise PL/I - C9050-042 Exam Practice Test