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最新的 IBM Certified Application Developer C9050-042 免費考試真題:

1. Requirement:
All the characters of the CHAR(3) variable X must be tested to be numeric. Which of the following
solutions meets the requirement and does not require essential structural modifications when the
requirement is changed to the following: The first character of the CHAR(3) variable X must be tested to
be uppercase alphabetic, while the two other characters must be tested to be numeric.

A) DCL NUM CHAR(10) VALUE('0l 23456789');
IF VERIFY(X,NUM) = 0
THEN ... /*NUMERIC*/
B) DCL Y PIC'999';
DCL SWITCH BIT(1) INIT('1'B);
ON CONVERSION BEGIN;
SWITCH =
ONSOURCE = '000';
END;
Y = X;
IF SWITCH
THEN ... ; /*NUMERIC*/
C) DCL ALPHA CHAR(26) VALUE('ABCDEFGHIJKLMNOPQRSTUVWXYZ');
DCL NUM CHAR(10) VALUE('0123456789');
IF TRANSLATE(X,(26)'A'!I(10)'9'ALPHA!!NUM) = '999'
THEN ... ; /*NUMERIC*/
D) IFX >= '000' & X <= '999'
THEN ... /*NUMERIC*/

2. A given PL/I program has a big nesting depth. Which of the following measures will help to reduce the
nesting depth in most cases?

A) Using DO-WHILE as the only loop technique
B) Avoiding ELSE clauses
C) Avoiding OTHER clauses
D) Using SELECT constructs instead of If-THEN-ELSE

3. It becomes apparent that the deadline to implement and test all the functions required for an application is
at risk. Which of the following is the best course of action?

A) Inform management that the deadline has to be changed.
B) Inform management that more people are required.
C) Inform the team and the sponsor about the problem and discuss possible solutions.
D) Inform management that some functions will not have been tested when the system is implemented.

4. Which PL/I builtin function can be used to get the system return code from a called program (including
non-PL/I languages)?

A) PLISTRA
B) PLIRETC
C) PLIREST
D) PLIRETV

5. Which compiler option causes the compiler to flag any reference to structure members that are not level 1
and are not dot qualified?

A) RULES(NDLAXQUAL)
B) PULES(NOLAXDOT)
C) RULES(NOLAXLEVEL1)
D) RULES(NOLAXSTRUCT)

問題與答案：