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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. 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) For maximum parallel performance, scalability, and features it is best to use the native parallel database stages.
D) Next to the connector stage it is best to use the native parallel database stages.

2. You have a dataset that is range-partitioned and sorted. Which technique is most efficient to create globally sorted data file?

A) Insert Funnel stage before the final Sequential File stage and select Sort Funnel as Funnel Type.
B) Select Ordered collector method for the input link of the final Sequential File stage.
C) Insert Funnel stage before the final Sequential File stage and select Sequence as Funnel Type.
D) Select SortMerge collector method for the input link of the final Sequential File stage.

3. You are given a job requirement that requires calculations based on the latest currency exchange rate. You decide to invoke a Web service to obtain the latest exchange rate.
What are two ways that you can perform a Web service invocation in a DataStage job to obtain the latest exchange rate? (Select two)

A) Use Web Services Client stage as a lookup.
B) Use Web Services Transformer stage.
C) Use WISD Input stage.
D) Call a Web Service using a DSRoutine inside the Parallel Transformer stage.

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

5. What conditions are necessary for a master record and an update record to merge?

A) some of the columns in the input record match the columns in the update record
B) none of the columns in the input record match the columns in the update record
C) both records have the same values for the merge key column(s) that you specify
D) all of the columns in the input record match the columns in the update record

Solutions: