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IBM InfoSphere DataStage v9.1 Sample Questions:

1. You are asked to optimize the fork join job design in the exhibit. This job uses the sort aggregator and a left outer join on the ZIP code column. Currently all partitioning is set to "Auto" and automatic sort insertion is allowed.

Which change will reduce the cost of partitioning that occurs in this job?

A) Use Entire partitioning on the input links to the Aggregator and Join stages.
B) Hash partition and sort on ZIP code column on the input links to the Aggregator and Join stages.
C) Hash partition and sort on ZIP code column prior to the Copy stage and use entire partitioning on the Aggregator and Join stages.
D) Hash partition and sort on ZIP code column prior to the Copy stage, and use same partitioning on the Aggregator and Join stages.

2. Modular development techniques should be used to maximize re-use of DataStage jobs and components. Which statement represents Modular Development techniques?

A) Create a standard directory structure inside of the DataStage project directory for source and target files.
B) Job parameterization allows a single job design to process similar logic instead of creating multiple copies of the same job.
C) Job parameters should be used in Job Names.
D) Hard code the Invocation ID to improve development process.

3. How is DataStage table metadata shared among DataStage projects?

A) Use the InfoSphere Metadata Asset Manager (IMAM) to move the DataStage table definition to the projects where it is needed.
B) Import another copy of the table metadata into the project where it is required.
C) Use the "Shared Table Creation Wizard" to place the table in the shared repository.
D) Export DataStage table definitions from one project and importing them into another project.

4. You are assigned to correct a job from another developer. The job contains 20 stages sourcing data from two Data Sets and many sequential files. The annotation in the job indicates who wrote the job and when, not the objective of the job. All link and stage names use the default names. One of the output columns has an incorrect value which should have been obtained using a lookup. What could the original developer have done to make this task easier for maintenance purposes?

A) Name all stage and links the same.
B) Name all stage and links with column names and ideas.
C) Name all stages and links based on what they do.
D) Indicate all stage names within the job annotation.

5. When using the loop functionality in a transformer, which statement is true regarding Transformer processing.

A) Stage variables can be executed after loop variable expressions.
B) Loop variable expressions are executed before input link column expressions.
C) Stage variables can be referenced in loop conditions.
D) Output links can be excluded from being associated with a True loop condition.

Solutions: