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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. How must the input data set be organized for input into the join stage? (Choose two.)

A) Key partitioned
B) Sorted in ascending order
C) Hash partitioned
D) Entire partitioned
E) Unsorted

2. A copy of a production job was moved into a development project and modified to improve performance. You must prepare a report for a code review that documents the changes to the job.
How would you gather the information for this report? (Select two)

A) DSMakeJobReport
B) Cross Project Compare
C) Compare Within
D) diffapicmdline.exe

3. Which two partitioning methods require keys? (Choose two.)

A) Hash
B) Modulus
C) Round Robin
D) Entire

4. Which two statements are correct when using the Oracle Enterprise stage? (Choose two.)

A) DataStage Designer requires connectivity to the Oracle database during job development.
B) $APT_ORCHHOME/bin must appear before $ORACLE_HOME/bin in the $PATH.
C) Add $ORACLE_HOME/bin to the $PATH and $ORACLE_HOME/lib to the $LIBPATH, $LD_LIBRARY_PATH, or $SHLIB_PATH.
D) Define variable $TNS_ADMIN to point to the tnsnames.ora file location.

5. Which condition is required to use the LastRowInGroup() function to determine a key break on a field?

A) The input data has to be sorted by the key field and DataStage must be able to detect that the data is sorted, for example, by the presence of a Sort stage.
B) The input data has to be sorted by the key field, but it is not required that DataStage be able to detect this. For example, the input data might be sorted before it is input to the job. (However, the job will abort at runtime if the data isn't sorted.)
C) The LastRowInGroup() function requires the data to be grouped by the key field, but the data does not have to be sorted.
D) The LastRowInGroup() function does not require the data to be either sorted or grouped by the key field. If necessary the LastRowInGroup() function will perform a sort.

Solutions: