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IBM Assessment: InfoSphere DataStage v8.5 : A2090-421
Exam Code: A2090-421
Exam Name: Assessment: InfoSphere DataStage v8.5
Updated: Sep 20, 2026
Q & A: 194 Questions and Answers
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IBM A2090-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| DataStage Architecture and Components | 20% | - Client and server components - InfoSphere Information Server architecture - Parallel framework concepts - Project and repository management |
| Job Execution, Monitoring and Troubleshooting | 15% | - Director client usage - Job logs and error handling - Debugging and validation - Performance optimization |
| Data Transformation and Processing | 25% | - Transformer stage logic - Lookup and reference data - Handling NULL values and data types - Slowly Changing Dimensions (SCD) |
| Advanced Features and Integration | 10% | - Source control integration - Job sequences and control flow - Metadata management |
| Job Design and Development | 30% | - Sequential and parallel job creation - Data linking and partitioning - Stage usage and configuration - Parameter sets and environment variables |
IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:
Question #1
Which Oracle data type conversion is correct?
- A. Oracle data type NUMBER converts to DECIMAL(38, 0) in Oracle Enterprise stage.
- B. Oracle data type NUMBER(6, 0) converts to INT32 in Oracle Enterprise.
- C. Oracle data type NUMBER(15, 0) converts to INT32 in Oracle Enterprise stage.
- D. Oracle data type RAW converts to RAW in Oracle Enterprise stage.
Correct Answer: A 🗳️
Question #2
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. Key partitioned
- B. Sorted
- C. Merged links
- D. Sequential mode
Correct Answer: C,D 🗳️
Question #3
You have a DataStage job on SMP environment. It contains an input sequential file, a Modify stage, followed by a Transformer stage, and an output Sequential File stage. The job is run with three nodes. The engine uses all default settings. How many processes will this job create?
- A. 19
- B. 9
- C. 16
- D. 12
Correct Answer: B 🗳️
Question #4
Which two statements are true about project-level configuration for National Language Support (NLS)? (Select two)
- A. Choose appropriate NLS map in the stage property.
- B. Change the Parallel job project locale.
- C. Choose NVarChar for string fields.
- D. Change the Parallel job project map.
Correct Answer: A,D 🗳️
Question #5
In your DB2 database you have column names that use characters # and $. Which two steps should be completed to allow DataStage to convert these characters into internal format and back as necessary? (Select two)
- A. Avoid using the strings_025_and_026_in your IBM DB2 column names.
- B. Avoid using the strings_035_and_036_in your IBM DB2 column names.
- C. Set environment variable $DS_ENABLE_RESERVED_NUM_CONVERT to true.
- D. Set environment variable $DS_ENABLE_RESERVED_CHAR_CONVERT to true.
Correct Answer: B,D 🗳️
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