Exam Name: Assessment: InfoSphere DataStage v8.5
Certification Provider: IBM
Corresponding Certification: IBM Specialist
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IBM A2090-421 Exam Overview:
| Certification Vendor: | IBM |
|---|---|
| Exam Name: | InfoSphere DataStage v8.5 |
| Exam Number: | C2090-421 |
| Exam Duration: | 90 minutes |
| Related Certifications: | IBM InfoSphere DataStage Professional IBM InfoSphere Information Server |
| Exam Price: | Approx. $200 USD (varies by region) |
| Certificate Validity Period: | No fixed expiration (legacy exam, retired) |
| Available Languages: | English |
| Passing Score: | 70% |
| Exam Format: | Scenario-Based, Multiple Response, Multiple Choice |
| Real Exam Qty: | 60-70 |
| Recommended Training: | IBM InfoSphere DataStage v8.5 Training |
| Exam Registration: | Pearson VUE IBM Exam Registration |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | In-person at Pearson VUE centers or online proctored; exam is now retired |
| Pre Condition: | No mandatory prerequisites; recommended 6+ months hands-on experience with InfoSphere DataStage v8.5 |
| Official Syllabus URL: | https://www.ibm.com/training/certification |
IBM A2090-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Persistent Storage | 10% | - Sequential files and file sets - Data sets and file structures - Restructure and format stages |
| Topic 2: Configuration | 6% | - Understand architecture and components - Create and configure projects - Install and configure InfoSphere DataStage v8.5 |
| Topic 3: Performance & Troubleshooting | 15% | - Partitioning and sorting optimization - Monitor and log execution - Handle errors and rejects |
| Topic 4: Database Connectivity | 9% | - Source and target database properties - Database stage selection - ODBC, DB2, Oracle integration |
| Topic 5: Job Design & Development | 25% | - Slowly Changing Dimensions (SCD) - Transformer and derivation logic - Lookup, Join, Merge, and Funnel stages - Job sequences and parameterization |
| Topic 6: Metadata Management | 6% | - Schema orchestration - Runtime Column Propagation (RCP) - Import and share metadata |
| Topic 7: Parallel Architecture | 9% | - Parallel execution and configuration files - Node pools and parallel processing - Data partitioning and collecting |
| Topic 8: Advanced Techniques | 10% | - Environment variables and parameter sets - Job deployment and packaging - Complex Flat File (CFF) stage |
A2090-421 Exam FAQ — Convenience, Quality, Policy
The official IBM Assessment: InfoSphere DataStage v8.5 outline defines 8 domains. The leading three are Advanced Techniques (10%), Job Design & Development (25%), and Performance & Troubleshooting (15%). The full list is in the topics section above, and Prep4away's 194 practice questions cover each one.
No mandatory prerequisites; recommended 6+ months hands-on experience with InfoSphere DataStage v8.5 Since requirements change over time, confirm the latest on the official IBM exam page before scheduling.
The IBM Assessment: InfoSphere DataStage v8.5 exam contains 60-70 to complete within 90 minutes. Timed simulation in the Prep4away Desktop Test Engine teaches that rhythm before exam day does.
IBM recommends these training resources for the IBM Assessment: InfoSphere DataStage v8.5 exam:
Follow the training with steady self-testing — the 194 practice questions from Prep4away help you apply theory and fill any gaps the training leaves.
Prep4away issues a full refund if you take the IBM Assessment: InfoSphere DataStage v8.5 exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows with customizable simulation and timed modes that works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review — not limited to any equipment, and friendly even without a network. All 194 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.
The A2090-421 exam is a IBM certification exam validating the IBM Assessment: InfoSphere DataStage v8.5 syllabus shown above. It belongs to these credential paths: IBM InfoSphere DataStage Professional, IBM InfoSphere Information Server. Candidates in 2026 start with Prep4away's 194 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.
The IBM Assessment: InfoSphere DataStage v8.5 exam requires 70% to pass, and registration costs Approx. $200 USD (varies by region). A failed attempt means paying the same fee again — a readiness check with the Prep4away engines before booking is the cheaper option.
In-person at Pearson VUE centers or online proctored; exam is now retired Register for the IBM Assessment: InfoSphere DataStage v8.5 exam through these official channels:
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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:
In a Transformer expression for a stage variable, there is a nullable input column. What happens when a row is processed that contains NULL in that input column?
- A. The job aborts.
- B. NULL is written to the stage variable.
- C. The row is rejected.
- D. The value written to the stage variable is undetermined.
Correct Answer: B 🗳️
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 requires the data to be grouped by the key field, but the data does not have to be sorted.
- 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 does not require the data to be either sorted or grouped by the key field. If necessary the LastRowInGroup() function will perform a sort.
Correct Answer: A 🗳️
What conditions are necessary for a master record and an update record to merge?
- A. all of the columns in the input record match the columns in the update record
- B. both records have the same values for the merge key column(s) that you specify
- C. some of the columns in the input record match the columns in the update record
- D. none of the columns in the input record match the columns in the update record
Correct Answer: B 🗳️
How is Runtime Column Propagation (RCP) enabled for use in DataStage Jobs?
- A. Set the APT_ENABLE_RCP environment variable to TRUE.
- B. RCP is by default available for all DataStage Projects.
- C. Use RCP definition wizard to initialize RCP for project use.
- D. Use the Info Server web console to enable RCP
- E. Use the DataStage Administrator to enable RCP for the project.
Correct Answer: E 🗳️
In a Transformer, which two of the following mappings can be handled by default type conversions. (Select two)
- A. Date input column mapped to a string output column.
- B. String input column mapped to integer output column.
- C. String input column mapped to a data output column.
- D. Integer input column mapped to string output column.
- E. Integer input column mapped to raw output column.
Correct Answer: C,D 🗳️
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