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IBM C2090-303 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Administration and Troubleshooting | - Environment configuration and deployment - Error handling and debugging - Job monitoring and logging |
| Topic 2: DataStage Architecture and Components | - Parallel processing architecture - DataStage Director, Designer, and Administrator - Server vs Parallel jobs concepts |
| Topic 3: Performance Tuning and Optimization | - Memory and resource optimization - Parallel execution tuning - Partitioning strategies |
| Topic 4: Job Design and Development | - Job stages and links - Data flows and sequencing - Transformer stage usage |
| Topic 5: Data Integration and Connectivity | - Database connectors (ODBC, JDBC) - Enterprise system integration - Flat file and sequential file handling |
IBM InfoSphere DataStage v9.1 Sample Questions:
A DataStage job uses an Inner Join to combine data from two source parallel datasets that were written to disk in sort order based on the join key columns. Which two methods could be used to dramatically improve performance of this job? (Choose two.)
- A. Add a parallel sort stage before each Join input, specifying the "Don't Sort, Previously Grouped" sort key mode for each key.
- B. Disable job monitoring.
- C. Explicitly specify hash partitioning and sorting on each input to the Join stage.
- D. Set the environment variable $APT_SORT_INSERTION_CHECK_ONLY.
- E. Unset the Preserve Partitioning flag on the output of each parallel dataset.
Correct Answer: A,D 🗳️
Identify the two statements that are true about the functionality of the XML Pack 3.0. (Choose two.)
- A. It includes the XML Input, XML Output, and XML Transformer stages.
- B. XML Stage can be found in the Database folder on the palette.
- C. XML Stages are Plug-in stages.
- D. Uses a unique custom GUI interface called the Assembly Editor.
- E. A single XML Stage, which can be used as a source, target, or transformation.
Correct Answer: D,E 🗳️
What two features distinguish the Operations Console from the Director job log? (Choose two.)
- A. Workload management is supported within Director, but not in the Operations Console.
- B. The Operations Console can monitor jobs running on more than one DataStage engine.
- C. The Operations Console can run on systems where the DataStage clients are not installed.
- D. Jobs can be started and stopped in Director, but not in the Operations Console.
- E. The Operations Console can monitor jobs running on only one DataStage engine.
Correct Answer: B,C 🗳️
The derivation for a stage variable is: Upcase(input_column1) : ' ' : Upcase(input_column2). Suppose that input_column1 contains a NULL value. Assume the legacy NULL processing option is turned off. Which behavior is expected?
- A. The target stage variable is populated with spaces or zeros depending on the stage variable data type.
- B. The job aborts.
- C. The input row is either dropped or rejected depending on whether the Transformer has a reject link.
- D. NULL is written to the target stage variable.
Correct Answer: D 🗳️
The effective use of naming conventions means that objects need to be spaced appropriately on the DataStage Designer canvas. For stages with multiple links,expanding the icon border can significantly improve readability. This approach takes extra effort at first, so a pattern of work needs to be identified and adopted to help development. Which feature of Designer can improve development speed?
- A. Palette Layout
- B. Snap to Grid Feature
- C. Show Performance Statistics Feature
- D. Repository Layout
Correct Answer: B 🗳️
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