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IBM A2090-303 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| DataStage Fundamentals | - Architecture Overview
|
| Job Design and Development | - Transformations
|
| Performance Tuning | - Optimization Techniques
|
| Data Integration and Processing | - Data Sources and Targets
|
| Job Control and Administration | - Scheduling and Monitoring
|
IBM Assessment: IBM InfoSphere DataStage v9.1 Assessment Sample Questions:
Which Oracle Connector stage property can be set to tune job performance?
- A. Array size
- B. Partition size
- C. Transaction size
- D. Memory size
Correct Answer: A 🗳️
A job validates account numbers with a reference file using a Join stage, which is hash partitioned by account number. Runtime monitoring 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?
- A. Change the number of nodes in the configuration file.
- B. Use Round Robin partitioning on the stream and Entire partitioning on the reference.
- C. Replace the Join with a Merge stage.
- D. Add a Sort stage in front of the Join stage. Sort by account number.
Correct Answer: A 🗳️
How does the Complex Flat File stage (CFF) support the use of OCCURS clauses within COBOL files?
- A. The CFF stage cannot process COBOL files with OCCURS clauses.
- B. Each element of the OCCURS clause is treated as a separate element in an array.
- C. Each element of the OCCURS clause is treated as a subrecord.
- D. Each element of the OCCURS clause is treated as a column of raw data.
Correct Answer: B 🗳️
You are asked by your customer to collect partition level runtime metadata 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? (Choose two.)
- A. $APT_PERFORMANCE_DATA
- B. Open up the job in Metadata Workbench and select the "Data Lineage" option.
- C. Enable the job property "Record job performance data".
- D. $APT_CPU_ROWCOUNT
- E. Click the Performance Analysis icon in the toolbar to open the Performance Analyzer utility.
Correct Answer: A,C 🗳️
Indicate two possible job design topologies that Information Services Director (ISD) parallel jobs can conform to. (Choose two.)
- A. A job with one ISD Input stage and no ISD Output stage.
- B. A job with no ISD Input stage and with one ISD Output stage.
- C. A job with one ISD Input stage and greater then one ISD Output stage.
- D. A job with greater then one ISD input stage and one ISD Output stage.
- E. A job with a single ISD Transformation stage.
Correct Answer: A,B 🗳️
