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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. You are using the Change Capture stage in your job design to identify changes made to the input link (before image) to obtain the results in the output link. This job will be using a multi-node configuration file when executed.
What are two requirements on the input link data for the Change Capture stage? (Select two)

A) Merged links
B) Sequential mode
C) Key partitioned
D) Sorted

2. How is Runtime Column Propagation (RCP) enabled for use in DataStage Jobs?

A) Use the Info Server web console to enable RCP
B) Use the DataStage Administrator to enable RCP for the project.
C) Set the APT_ENABLE_RCP environment variable to TRUE.
D) RCP is by default available for all DataStage Projects.
E) Use RCP definition wizard to initialize RCP for project use.

3. Your job runs slowly and does not scale beyond two nodes. It appears the data has been partitioned on the DoNotCall flag, which has accumulating totals based on this flag using a sort method.
Which technique would improve scalability and performance?

A) Add an additional column for partitioning to result in additional data partitions.
B) Change the preserve partitioning option on the stage ahead of the aggregator to clear partitioning.
C) Increase the number of physical nodes available for partitioning.
D) Change the partitioning method to Round Robin; add a second Aggregator stage with Execution mode 'Sequential' and

4. What are three valid join operations for the Join stage? (Choose three.)

A) Top outer join
B) Bottom inner join
C) Left outer join
D) Inner Join
E) Right outer join

5. Which three parallel job stages allow you to use partial schemas? (Select three)

A) Dataset stage
B) External Source stage
C) Sequential File stage
D) Peek stage
E) Column Import stage

Solutions: