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

1. Which of the following is the most likely reason to use a debugger in a production environment?

A) Enhance performance
B) Test a program
C) Ensure data integrity
D) Investigate error situations

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

3. Which of the following is NOT a builtin subroutine which supports Logical Unit of Work?

A) PLICANC
B) PLIREST
C) PLILUW
D) PLICKPT

4. Which of the following runtime options should be reviewed when attempting to improve performance in a
PL/I program?

A) ERRCOUNT, LIBSTACK, HEAPPOOLS and XPLINK
B) DEPTCONDLMT, INFOMSGFILTER, MSGFILE and RPTOPTS
C) ALL31, STORAGE, HEAP and STACK
D) TRACE, TRAP, CHECK and DEBUG

5. Requirement Copy a dataset of record length 100 to another dataset.
If the following code does not fulfill the requirement above, which is the most likely reason?
DCL DDIN FILE RECORD INPUT;
DCL DDOUT FILE RECORD OUTPUT;
DCL INSTRUC CHAR(100);
DCL EOF_IN BIT(1) INIT('0'B);
ON ENDFILE(DDIN) EOF_IN = '1'B;
READ FILE(DDIN) INTO(INSTRUC);
DO WHlLE(^EOF_IN);
WRITE FILE(DDOUT) FROM(INSTRUC);
READ FILE(DDIN) INTO(INSTRUC);
WRITE FILE(DDOUT) FROM(INSTRUC);
END;

A) The code does not fulfill the requirement because the OPEN statements are missing.
B) The code does not fulfill the requirement because the input structure is the same as the output
structure.
C) The code fulfills the requirement.
D) The code does not fulfill the requirement because too many records will be written to the output dataset,
except when the input dataset is empty.

問題與答案：