IBM InfoSphere DataStage v8.5 : 000-421
- Exam Code: 000-421
- Exam Name: InfoSphere DataStage v8.5
- Updated: Sep 22, 2026
- Q & A: 194 Questions and Answers
About IBM InfoSphere DataStage v8.5 : 000-421 Exam
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IBM 000-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Features and Integration | 10% | - Source control integration - Job sequences and control flow - Metadata management |
| Topic 2: Job Design and Development | 30% | - Parameter sets and environment variables - Sequential and parallel job creation - Stage usage and configuration - Data linking and partitioning |
| Topic 3: DataStage Architecture and Components | 20% | - Parallel framework concepts - Project and repository management - InfoSphere Information Server architecture - Client and server components |
| Topic 4: Job Execution, Monitoring and Troubleshooting | 15% | - Performance optimization - Director client usage - Debugging and validation - Job logs and error handling |
| Topic 5: Data Transformation and Processing | 25% | - Slowly Changing Dimensions (SCD) - Transformer stage logic - Lookup and reference data - Handling NULL values and data types |
IBM InfoSphere DataStage v8.5 Sample Questions:
What is the correct restructure stage to extract data from four input columns (three of which carry vectors) and output them into two columns with one vectors in a subrecord and the non-vector carrying column being passed through the stage?
- A. Split Subrecord Stage
- B. Column Import Stage
- C. Make Subrecord Stage
- D. Column Export Stage
Correct Answer: B 🗳️
The given job processes large volumes of data using default partitioning, with sort/partition insertion enabled. Both source Data Sets are partitioned and sorted on the merge key. Assuming that the business logic allows all of the following actions, which design change would improve the performance of this job?
- A. Before each input to the Merge stage, insert a Sort stage with "Don't Group, Previously Grouped" set on the merge key. Specify SAME partitioning on all inputs.
- B. Set the buffer mode to "no buffer" on the output links of both Data Sets.
- C. Use the Data Set Management Utility to combine both input Data Sets into a single source Data Set.
- D. Set the "Preserve Partitioning" option on both Data Sets and replace the Merge stage with a Sort Funnel stage.
Correct Answer: A 🗳️
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What two stages are required to place Header and Detail records, which have different formats, into a single format? (Choose two.)
- A. Column Import Stage
- B. Column Export Stage
- C. Funnel Stage
- D. Combine Stage
Correct Answer: B,C 🗳️
In the job fragment shown in the exhibit, the data going into the target Sequential File stage needs to be sorted by postal code. The Sort stage accomplishes this by running in Sequential mode and sorting by postal code. You have been asked to improve the performance of the job with a 4-node configuration file.
Which two changes will improve the performance of the job? (Choose two.)
- A. Change the mode of the existing Sort stage to parallel mode; continue to sort by postal code. In the target Sequential File stage choose the SortMerge collector.
- B. Eliminate the existing Sort stage; define an in-stage sort in the Filter stage, sorting by postal code. In the target Sequential File stage choose the SortMerge collector.
- C. Move the Sort stage in front of the Filter stage, so that the sort is performed earlier in the job.
- D. Add a second Sort stage just before the existing Sort stage; run the new stage in parallel mode sorting by postal code.
Correct Answer: A,B 🗳️
Your job is using the DB2 Enterprise stage as a target. In this job you are inserting data into a single existing table on a remote database. You are using Run-Time Column Propagation (RCP) on all of the links.
Which two job design configuration actions would you consider to effectively use RCP? (Select two)
- A. In the DB2 Enterprise stage use Connection properties to manage column mappings.
- B. In the DB2 Enterprise stage set the option named "Silently Drop Columns Not in Table" to "True".
- C. Use a Modify stage prior to the DB2 Enterprise stage in order to drop the columns not found in the table.
- D. Use DB2 partitioning properties on the input link to the DB2 Enterprise stage to control column layout in partitions.
Correct Answer: B,D 🗳️
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