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IBM Assessment: InfoSphere DataStage v8.5 : A2090-421 valid dump torrent
- Exam Code: A2090-421
- Exam Name: Assessment: InfoSphere DataStage v8.5
- Updated: Oct 04, 2026
- Q&As: 194 Questions and Answers
About IBM Assessment: InfoSphere DataStage v8.5 : A2090-421 Real Exam
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IBM A2090-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Performance and Optimization | - Parallel execution tuning
|
| Data Connectivity and Integration | - Source and target systems
|
| DataStage Architecture and Fundamentals | - Core architecture concepts
|
| Monitoring and Administration | - Job control and troubleshooting
|
| Job Design and Development | - Building DataStage jobs
|
IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:
Question #1
Which job design technique can be used to give unique names to sequential output files that are used in multi-instance jobs?
- A. Use a Transformer stage variable to generate the name.
- B. Generate unique file names by using a macro.
- C. Use parameters to identify file names.
- D. Use DSJobInvocationID to generate a unique filename.
Correct Answer: C 🗳️
Question #2
A scenario requires selecting only the most recent transactions for each of 2 million unique customers, from a 20 million row DB2 source table containing order history. Which parallel job design would satisfy this functional requirement?
- A. Using the DB2 API stage, select all rows. Use a Sort stage with customer number and order date sort keys in ascending order, then Remove Duplicates with Last Duplicate to retain.
- B. Using the DB2 Enterprise stage, select all rows. Perform a unique Sort using customer number and order date sort keys in ascending order.
- C. Select all rows using the ODBC Connector stage, use a Sort Aggregator on customer number key to select the maximum order date.
- D. Using the Dynamic Relational stage, use custom SQL to select all DISTINCT customer numbers from the order history table.
Correct Answer: A 🗳️
Question #3
Which condition is required to use the LastRowInGroup() function to determine a key break on a field?
- A. The input data has to be sorted by the key field and DataStage must be able to detect that the data is sorted, for example, by the presence of a Sort stage.
- B. The LastRowInGroup() function does not require the data to be either sorted or grouped by the key field. If necessary the LastRowInGroup() function will perform a sort.
- C. The input data has to be sorted by the key field, but it is not required that DataStage be able to detect this. For example, the input data might be sorted before it is input to the job. (However, the job will abort at runtime if the data isn't sorted.)
- D. The LastRowInGroup() function requires the data to be grouped by the key field, but the data does not have to be sorted.
Correct Answer: A 🗳️
Question #4
You have been asked to delete a shared container from the project by your customer. Before you do this you want to make sure it will not impact other objects in the project. How will you ensure that deleting the shared container will not cause a failure when jobs are recompiled?
- A. Select the shared container, Right-click on the Dependencies (deep) command.
- B. Select the shared container, Right-click on the Where used command.
- C. Advanced find, set Dependencies Of field equal to the container name, and Check the Option to Include nested results for Dependency searches.
- D. Select the shared container, Right-click on the Where used (deep) command.
Correct Answer: D 🗳️
Question #5
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. Sequential mode
- B. Sorted
- C. Merged links
- D. Key partitioned
Correct Answer: A,C 🗳️
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