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IBM A2090-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Data Integration and Connectivity | 15% | - Database connectivity and stages - Specialized stages and connectors - File handling and formats |
| Performance and Tuning | 20% | - Job optimization and scaling - Resource management - Buffer and sort tuning |
| Administration and Deployment | 10% | - Job packaging and deployment - Monitoring and logging - Version control and migration |
| Job Design and Development | 30% | - Parallel job design principles - Transformer and derivation logic - Stage configuration and properties - Partitioning and collecting methods |
| Environment and Configuration | 25% | - Configuration files and environment variables - Project setup and administration - Distributed and asymmetric environments |
IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:
You are setting up a clustered environment. Each node in the cluster has public and private network adapters. The private network uses fast Ethernet. Which two statements are true? (Select two)
- A. Host name alias is not allowed for conductor node.
- B. You must use APT_PM_CONDUCTOR_HOSTNAME variable for optimal environment.
- C. Using the host names on the private network for 'fastname' makes better performance.
- D. The client machines on the public network must use the host name for the engine on the private network to connect.
Correct Answer: B,C 🗳️
The Teradata Enterprise stage uses a distributed FastExport to access data. What is a limitation to distributed FastExport?
- A. Non-data access (e.g., pseudo-tables like DATE or USER) is allowed.
- B. The use of the USING modifier is allowed.
- C. Aggregates and most arithmetic operators in the SELECT statement are allowed.
- D. Multiple-AMP requests are allowed.
Correct Answer: D 🗳️
Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).
In the job fragment shown in the exhibit, there are two Sort stages: the first (Sort1) sorts the data by state, the second (Sort2) sorts the data by state and area, No repartitioning occurs between the stages.
You have been asked to reduce the number of sorts to improve the performance of the job.
Which two ways might be used to accomplish this without changing how the job functions? (Select two)
- A. Remove the second Sort stage. Add area as an additional sort key.
- B. In the second Sort stage change the Sort Mode property of the state column to "Don't sort, previously sorted.".
- C. In the second Sort stage change the Sort Mode property of the area column to "Don't sort, previously sorted.".
- D. Remove the first Sort stage. Retain the existing sort keys in the second Sort stage.
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. NextSurrogateKey()
- B. @PARTITIONNUM + @NUMPARTITIONS
- C. 1 + @NUMPARTITIONS * @INROWNUM
- D. @INROWNUM
Correct Answer: B 🗳️
Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).
You have a parallel shared container that is used by other parallel jobs within your project. Part of the logic in this shared container has been changed. Which two statements are true regarding this change to the parallel shared container? (Choose two.)
- A. You can create a sequencer to re-compile all of the routines using this shared container.
- B. Use usage analysis and multi-compile to re-compile job using this shared container.
- C. Jobs using this parallel shared container need to be re-compiled.
- D. Jobs using this parallel shared container need to be re-compiled only when the metadata of the container is changed.
Correct Answer: B,C 🗳️
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