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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. Configuring the weighting column of an Aggregator stage affects which three options. (Choose three.)

A) Percent Coefficient of Variation
B) Maximum Value
C) Sum of Weights
D) Corrected Sum of Squares
E) Sum

2. DataStage offers database connectivity through connectors, native parallel and plug-in stage types. Which two statements are correct? (Choose two.)

A) ODBC API is a plug-in stage.
B) The connector stage offers better functionality and performance and is the best to use.
C) Next to the connector stage it is best to use the native parallel database stages.
D) For maximum parallel performance, scalability, and features it is best to use the native parallel database stages.

3. To better understand the data flowing through a job, it is desirable to have structural information about the datasets captured in the job log. Which environment variable can provide this information?

A) $OSH_PRINT_SCHEMAS
B) $APT_PM_PLAYER_MEMORY
C) $OSH_STDOUT_MSG
D) $APT_NO_PART_INSERTION

4. A dataset was created earlier with one partition, with the Preserve Partitioning flag set. A subsequent job using a 2-node configuration file reads from that dataset, passing data to a Transformer stage with "Same" partitioning.
Which two statements are true? (Select two)

A) DataStage will repartition the data and run one instance of the Transformer stage.
B) Inserting a Sort stage prior to the Transformer stage will force its parallel execution.
C) Setting the Preserve Partitioning flag to "Clear" will generate two instances of the Transformer stage.
D) The DataStage job will abort.
E) Setting the Preserve Partitioning flag to "Set" will run one instance of the Transformer stage.

5. Which of the following describes what happens when Runtime Column Propagation is enabled?

A) An input column value flows into a target column only if it matches it by name.
B) An input column value flows into a target column based on its position in a Schema file.
C) An input column value flows into a target column based on its position in the input row. For example, first column in the input row goes into the first target column.
D) An input column value flows into a target column only if it is explicitly mapped to it.

Solutions: