IBM InfoSphere DataStage v8.5 : C2090-421

  • Exam Code: IBM
  • Exam Name: InfoSphere DataStage v8.5
  • Updated: Sep 13, 2026
  • Q & A: 194 Questions and Answers

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IBM C2090-421 Exam Syllabus Topics:
SectionObjectives
Topic 1: DataStage Architecture and Components- InfoSphere DataStage architecture overview
  • 1. Parallel vs server job architecture
    • 2. DataStage project structure and repositories
      Topic 2: Administration and Troubleshooting- Monitoring and debugging jobs
      • 1. Logging and error handling
        • 2. Job sequencing and control flow
          Topic 3: Performance Tuning and Optimization- Parallel processing optimization
          • 1. Partitioning and parallelism settings
            • 2. Job tuning techniques
              Topic 4: Job Design and Development- Server jobs and parallel jobs design
              • 1. Transformer stage usage
                • 2. Stages and links configuration
                  Topic 5: Data Integration and Connectivity- Data sources and connectors
                  • 1. Flat file and sequential file processing
                    • 2. Database connectivity (ODBC, JDBC)
                      IBM InfoSphere DataStage v8.5 Sample Questions:
                      Question #1

                      A script invokes an update job called "UpdateKeys" via a command line invocation of the dsjob command. The service is to wait for the completion and status of this job before continuing with the rest its tasks. Which three commands would invoke the "UpdateKeys" job in the MigrationProject and wait for its completion status? (Select three)

                      • A. dsjob -run -log dsjob -run -userstatus MigrationProject UpdateKeys
                      • B. dsjob -run MigrationProject UpdateKeys
                      • C. dsjob -run -jobstatus MigrationProject UpdateKeys
                      • D. dsjob-run-userstatus MigrationProject UpdateKeys
                      • E. dsjob-run-wait MigrationProject UpdateKeys
                      Reveal Solution  Discussion  0

                      Correct Answer: A,D,E  🗳️

                      Question #2

                      What stage allows for more than one reject link?

                      • A. Funnel stage
                      • B. Merge stage
                      • C. Peek stage
                      • D. Lookup stage
                      • E. Join stage
                      Reveal Solution  Discussion  0

                      Correct Answer: B  🗳️

                      Question #3

                      You are responsible for the projects Source Code Repository. When a developer notifies you that changes are ready to deploy you must first check them in. You will use the Information Server Source Code integration features to check in the changed assets. How will you identify the DataStage assets the developer modified in order to send them to the workspace?

                      • A. From Information Server Manager use Search with advanced options, specify a date modified and the developer's user name in the Modified by fields.
                      • B. Use Designer client Advanced Find, specify a modification date and the developer's username in the Modified by fields.
                      • C. From the workspace perspective select the project Right-click then Refresh from repository, specify a modification date and the developer's username in the Modified by fields.
                      • D. From the Information Server Manager Select the project then right-click on Synchronize with source code control system.
                      Reveal Solution  Discussion  0

                      Correct Answer: A  🗳️

                      Question #4

                      Which two statements are true about DataStage Parallel Build stages? (Choose two.)

                      • A. The Build stage generates a C/C++ source file that is compiled and linked outside of DataStage.
                      • B. The Build stage can be programmed to read and write automatically or code can be written to manually read and write rows.
                      • C. Build stages can only be used in a job that has Runtime Column Propagation (RCP) enabled.
                      • D. On the Logic Post-Loop, you specify code that runs after all input records have been processed.
                      Reveal Solution  Discussion  0

                      Correct Answer: B,D  🗳️

                      Question #5

                      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. Sorted
                      • B. Key partitioned
                      • C. Merged links
                      • D. Sequential mode
                      Reveal Solution  Discussion  0

                      Correct Answer: C,D  🗳️

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