IBM : C2090-421 Questions & Answers
Updated: Sep 24, 2026
No. of Questions: 194 Questions & Answers with Testing Engine
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IBM C2090-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Transformation and Processing | 25% | - Slowly Changing Dimensions (SCD) - Handling NULL values and data types - Transformer stage logic - Lookup and reference data |
| Topic 2: DataStage Architecture and Components | 20% | - InfoSphere Information Server architecture - Project and repository management - Parallel framework concepts - Client and server components |
| Topic 3: Advanced Features and Integration | 10% | - Job sequences and control flow - Source control integration - Metadata management |
| Topic 4: Job Execution, Monitoring and Troubleshooting | 15% | - Director client usage - Job logs and error handling - Debugging and validation - Performance optimization |
| Topic 5: Job Design and Development | 30% | - Stage usage and configuration - Parameter sets and environment variables - Sequential and parallel job creation - Data linking and partitioning |
IBM InfoSphere DataStage v8.5 Sample Questions:
In a file defining a partial schema, which three properties define the record? (Choose three.)
- A. intact
- B. record_delim_string
- C. delim
- D. record_length
- E. text
Correct Answer: A,B,D 🗳️
You are asked by management to document all jobs written to make future maintenance easier. Which two statements are true about annotations? (Choose two.)
- A. The background for the Description Annotation stage can be changed for each unique stage.
- B. The Description Annotation stage can be added several times at different locations to identify business logic.
- C. The full job description can be identified within the Description Annotation stage.
- D. The Description Annotation stage contains both the short and full descriptions for the job.
Correct Answer: C,D 🗳️
How is DataStage Table Metadata shared among DataStage projects?
- A. Export DataStage Table Definitions from one project and importing them into another project.
- B. Import another copy of the table metadata into the project where it is required.
- C. Use the Import/Export Manager to move the DataStage Table Definition to the projects where it is needed.
- D. DataStage Tables cannot be shared between projects.
- E. Use the "Shared Table Creation Wizard" to create a copy of the table in the shared repository.
Correct Answer: E 🗳️
You would like to pass values into parameters that will be used in a variety of downstream activity stages within a job sequence. What are three valid ways to do this? (Choose three.)
- A. Place a parameter set stage on the job sequence.
- B. Use the UserVariablesActivity Stage to populate the local parameters from an outside source such as a file.
- C. Use local parameters.
- D. Use environment variables.
- E. Check the "Propagate Parameters" checkbox in the Sequence Job properties.
Correct Answer: B,C,D 🗳️
You have a 3TB dataset hash-partitioned on CustID in a clustered environment. You need to join this dataset with 1GB of reference data on OrderID. Which technique is most appropriate?
- A. Use Join stage, hash-partition and sort both link on OrderID.
- B. Use Lookup stage, select auto partitioning for the stream link and entire partitioning for the reference link.
- C. Use Lookup stage, select auto partitioning for the stream link and hash-partition the reference link on CustI
- D. Use Lookup stage, select auto partitioning for both link.
Correct Answer: B 🗳️
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