IBM A2090-421

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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

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

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

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

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

3. You have run ten instances of the same job the previous evening. You want to examine the job logs for all instances but can only find five of them. How can you avoid this in the future for this job?

A) Set the $APT_AUTOPURGE_LOG environment variable to False.
B) Change the Auto-purge settings for the job in Director.
C) Change the Auto-purge settings in Administrator.
D) Set the $APT_AUTOLOG_PURGE environment variable to False.

4. A customer requires that a single output file generated by a parallel job be created in sort order. Which two job designs would achieve this goal? (Choose two.)

A) Insert a sorted Funnel stage before the input to the output SequentialFile stage.
B) Specify both partition and sort key columns on the input to the target SequentialFile stage.
C) Write the result to a parallel dataset, then write a shell script to convert the dataset records to text format, in sorted order.
D) Set the "Execution Mode" in the Advanced stage properties tab of the parallel Sort stage to execute sequentially.
E) Use a parallel sort and partition the input to the SequentialFile stage using a Sort Merge collector.

5. A copy of a production job was moved into a development project and modified to improve performance. You must prepare a report for a code review that documents the changes to the job.
How would you gather the information for this report? (Select two)

A) DSMakeJobReport
B) Compare Within
C) Cross Project Compare
D) diffapicmdline.exe

Solutions: