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IBM Assessment: IBM InfoSphere DataStage v9.1 Assessment Sample Questions:

1. What are two advantages of using Runtime Column Propagation (RCP)? (Choose two.)

A) Columns not specifically used in the flow are propagated as if they were.
B) Only columns used in the data flow need to be defined.
C) RCP forces a developer to define all columns explicitly.
D) Sequential files don't require schema files when using RCP.
E) Only columns that are defined as VarChar need RCP enabled.

2. Which stage classifies data rows from a single input into groups and computes totals?

A) Aggregator stage
B) Transformer stage
C) Compare stage
D) Modify stage

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

4. What two features distinguish the Operations Console from the Director job log? (Choose two.)

A) Jobs can be started and stopped in Director, but not in the Operations Console.
B) The Operations Console can monitor jobs running on only one DataStage engine.
C) Workload management is supported within Director, but not in the Operations Console.
D) The Operations Console can monitor jobs running on more than one DataStage engine.
E) The Operations Console can run on systems where the DataStage clients are not installed.

5. You want to find out which table definitions have been loaded into a job, and specifically which stages of the job they has been loaded into? How will you determine this?

A) Select the job, right-click, then click the Find dependencies command. Then right-click and select "Show the dependency path from the job".
B) Select the job, right-click, then click the Find where used (deep) command.
C) Select the job, right-click, then click the Find dependencies (deep) command.
D) Select the job, right-click, then click the Find where used command. Then right-click and select "Show the dependency path from the job".

Solutions: