IBM C9050-042

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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. Given the following declaration, what declaration of B would cause the structure Ato be invalid?
DCL K FIXED BIN (31) VALUE (10);
DCL P POINTER;
DCL 1 A BASED (P),
2 B FIXED BIN(31),
2 C DIM (K REFER (B)),
3 D FIXED BIN(31),
3 E CHAR (4);
ALLOCATE A;

A) 2B FIXED BIN (31),
B) 2B FIXED BIN (31) INIT (K),
C) 2B FIXED BIN(31) INIT (20),
D) 2B FIXED BIN(31) INIT (10),

2. Given the following declarations, which statement correctly refers to X?
DCL R CHAP(10);
DCLX CHAR(10) BASED;
DCL P PTR;
DCLZ CHAR(10);
P = ADDR(R);

A) Z = P -> X;
B) P = ADDR(X);
C) X='THIS IS X';
D) Z = X;

3. Which of the following statements is best for avoiding synchronously updating a resource?

A) Have all programs use ENQ and WAIT for a specific resource.
B) Have only program A update the resource without using ENQ.
C) Lock the entire resource at start of program and release at end of program.
D) Have several programs update the resource without using ENQ.

4. In the following example, what value will be written to SYSPRINT, if anything, by the PUT statement in
PGM_A?
PGM_A: PROC;
DCL INPARM CHAR (12) INIT('FIRST CALL? ');
DCL P_OUT PTR;
DCL OUTPARM CHAR (10) BASED (P_OUT);
DCL PGM_B ENTRY (CHAR(12),PTR) EXTEPNAL;
CALL PGM_B (INPARM,P_OUT);
IF OUTPARM = 'YES' THEN
DO;
INPARM = 'FOLLOW ON';
CALL PGM_B (INPARM,P_OUT);
END;
ELSE
DO;
INPARM = 'NORMAL CALL';
CALL PGM_B (INPARM,P_OUT);
END;
PUT SKIP LIST(OUTPARM);
END;
PGM_B: PROC(INPARM,P_OUT);
DCL INPARM CHAR (12);
DCL P_OUT PTR;
DCL OUTPARM CHAR (12) STATIC INIT(");
P_OUT = ADDR(OUTPARM);
IF INPARM = 'FIRST CALL? ' THEN
OUTPARM = 'YES'; ELSE
IF OUTPARM = " THEN
OUTPARM = 'FIRST CALL';
END;

A) blanks
B) The results are unpredictable.
C) 'YES'
D) 'FIRST CALL'

5. Which software model is LEAST appropriate it requirements keep changing?

A) Object-oriented model
B) Spiral model (also known as Iterative model)
C) Rapid Application Development model
D) Waterfall model

Solutions: