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IBM Developing with IBM Enterprise PL/I Sample Questions:

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

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

2. Given the following code, what statement will produce an E level diagnostic?
%DCL ABC ENTRY;
%ABC: PROC (X,Y) STATEMENT;
DCL(X,Y) CHAR;
IF ^PARMSET(X) THEN NOTE('NO X ',0);
IF ^PARMSET(Y) THEN NOTE('NO Y ',8);
ANSWER('/* '!lX!!Yl!'C */'); %
END ABC;

A) ABC Y(B)X(A);
B) ABC(,B);
C) ABC(A,);
D) ABC (A,B);

3. The following structure is used when writing a file on Intel architecture which is sent to the mainframe:
DCL 1 A,
2 B FIXED BIN(31),
2 C CHAR (100) VAR,
2 D FIXED BIN(31);
How must this structure be declared on the mainframe if the file is to be read correctly?

A) DCL1 A,
2 B FIXED BIN(31) LITTLEENDIAN,
2 C CHAR (100) VAR,
2 D CHAR (10);
B) DCL1 A,
2 B FIXED BIN(31) BIGENDIAN, 2 C CHAR (100) VAR BIGENDIAN, 2 D CHAR (10);
C) D CL 1 A,
2 B FIXED BIN(31) BIGENDIAN,
2 C CHAR (100) VAR,
2 D CHAR (10);
D) DCL1 A,
2 B FIXED BIN(31) LITTLEENDIAN,
2 C CHAR (100) VAR LITTLEENDIAN,
2 D CHAR (10);

4. 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) Call to SUBA
B) CaII to SUBD
C) CaII to SUBB
D) CaII to SUBC

5. 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) The database modifications must follow an 'all or nothing' rule
D) Only valid data will be written to database

Solutions: