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IBM A2090-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Performance Tuning and Optimization | - Parallel processing optimization
|
| Job Design and Development | - Server jobs and parallel jobs design
|
| Data Integration and Connectivity | - Data sources and connectors
|
| DataStage Architecture and Components | - InfoSphere DataStage architecture overview
|
| Administration and Troubleshooting | - Monitoring and debugging jobs
|
IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:
In which two situations is it appropriate to use a Sparse Lookup? (Choose two.)
- A. When invoking a stored procedure within a database per row in the streaming link.
- B. When accessing DB2 data using the DB2 API stage.
- C. When reference data is significantly larger than the streaming data (100:1).
- D. When the output of the Lookup stage needs to be hashed partitioned.
Correct Answer: A,C 🗳️
A copy of a production job was moved into a development project and modified to improve performance. You must prepare a report for a code review that documents the changes to the job.
How would you gather the information for this report? (Select two)
- A. DSMakeJobReport
- B. diffapicmdline.exe
- C. Compare Within
- D. Cross Project Compare
Correct Answer: A 🗳️
Explanation: Only visible for Prep4sureExam members. You can sign-up / login (it's free).
When you configure a domain for source code integration a source control workspace is created. What are two reasons for the source control workspace? (Choose two.)
- A. directory for deployment package files
- B. default directory for istool exports.
- C. local transfer area for assets being submitted to the source control system
- D. provides a place to store the archive created by IS source code control integration
Correct Answer: C,D 🗳️
Which two of the following derivations for an output column named OutCol can be used to generate a unique sequence of integers across multiple partitions?
- A. 1 + @NUMPARTITIONS * @INROWNUM
- B. NextSurrogateKey()
- C. @INROWNUM
- D. @PARTITIONNUM + @NUMPARTITIONS
Correct Answer: D 🗳️
Explanation: Only visible for Prep4sureExam members. You can sign-up / login (it's free).
You are experiencing performance issues for a given job. You are assigned the task of understanding what is happening at run time for that job. What are the first two steps you should take to understand the job performance issues? (Choose two.)
- A. Run job with $APT_TRACE_RUN set to true.
- B. Replace Transformer stages with custom operators.
- C. Review the objectives of the job.
- D. Run job with $APT_DUMP_SCORE set to true.
Correct Answer: C,D 🗳️
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