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IBM C2090-421 - InfoSphere DataStage v8.5
Updated: Sep 12, 2026
Q & A: 194 Questions and Answers
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Updated: Sep 12, 2026
Q & A: 194 Questions and Answers
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| Section | Objectives |
|---|---|
| Job Development | - Parallel job design principles - Stages and transformers usage - Job sequences and control logic |
| Data Integration | - Connectivity to data sources and targets - Data transformation techniques |
| Administration and Troubleshooting | - Job monitoring and logging - Error handling and recovery |
| InfoSphere DataStage Architecture | - Server and Parallel Job Architecture - Components (Designer, Director, Administrator) |
| Performance Optimization | - Parallel processing optimization - Job tuning and bottleneck analysis |
Which two partitioning methods require keys? (Choose two.)
Correct Answer: A,B 🗳️
You are asked by your customer to collect partition level runtime meta-data for DataStage Parallel jobs. You must collect this data after each job completes. What two options allow you to automatically save row counts and CPU time for each instance of an operator? (Select two)
Correct Answer: A,B 🗳️
A job validates credit card numbers with a reference file using a Join stage, which is hash partitioned by card number. Examination of Job Monitor reveals that some partitions process many more rows than others. Assuming adequate hardware resources, which action can be used to improve the performance of the job?
Correct Answer: D 🗳️
A job reads from a sequential file using a SequentialFile stage with option "number of readers" set to 2. This data goes to a Transformer stage and then is written to a dataset using the DataSet stage. The default configuration file has three nodes. The environment variable $APT_DISABLE_COMBINATION is set to "True" and partitioning is set to "Auto". How many processes will be created?
Correct Answer: B 🗳️
What three types of links are supported by the Lookup Stage? (Select three)
Correct Answer: B,D,E 🗳️
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