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IBM InfoSphere DataStage v8.5 Sample Questions:

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

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

2. Which two statements are true about Transformer loop processing? (Select two)

A) Loop variable expressions are executed before stage variable expressions.
B) Loop conditions are evaluated once for each input row.
C) Stage variables can be referenced in loop conditions.
D) Loop variable expressions are executed before output link column expressions.

3. A DataStage job uses an Inner Join to combine data from two source parallel datasets that were written to disk in sort order based on the join key columns. Which two methods could be used to dramatically improve performance of this job? (Choose two.)

A) Unset the Preserve Partitioning flag on the output of each parallel dataset.
B) Explicitly specify hash partitioning and sorting on each input to the Join stage.
C) Set the environment variable $APT_SORT_INSERTION_CHECK_ONLY.
D) Disable job monitoring.
E) Add a parallel sort stage before each Join input, specifying the "Don't Sort, Previously Grouped" sort key mode for each key.

4. A customer must compare a date column with a job parameter date to determine which output links the row belongs on. What stage should be used for this requirement?

A) Switch stage
B) Filter stage
C) Transformer stage
D) Compare stage

5. In the exhibit, a Funnel stage has two input links. Input 1 (Seq_File) comes from a SequentialFile with "Readers per Node" set to "2". Input 2 (Dataset) comes from a dataset created with 3 partitions. With the Funnel stage, the funnel type is set to "Sequence". The parallel configuration file contains three nodes.

How many instances of the Funnel stage run in parallel?

A) 3
B) 6
C) 1
D) 2

Solutions: