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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

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

2. Which three environment variables are used for reporting on DataStage jobs? (Select three)

A) $APT_DISABLE_ROOT_FORKJOIN
B) $APT_DUMP_SCORE
C) $APT_PM_PLAYER_MEMORY
D) $OSH_PRINT_SCHEMAS
E) $APT_PM_STARTUP_CONCURRENCY

3. A job validates credit card numbers with a reference file using a Join stage, which is hash partitioned by card number. Examination of Job Monitor 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) Replace the Join with a Merge stage.
B) Break the input file into multiple files.
C) Alter the number of partitions in the $APT_CONFIG_FILE.
D) Use Round Robin partitioning on the stream and Entire partitioning on the reference.

4. How are Shared Table definitions created from the DataStage Client?

A) Using the "Save" button on the "Table Properties" panel
B) Using the "Shared Table Creation Wizard" from the DataStage Client.
C) No need to, DataStage table definitions are automatically saved as shared metadata.
D) This cannot be done from the DataStage Client
E) Using the "Save" button on the columns tab on the Stage/Link editor

5. You need to find the differences between the jobs in the Test project and theit older version in the Production project. You discover that the Production project is on another domain. What feature would find the differences in a job that is in a project on a different domain?

A) DataStage Version Control
B) Cross Domain Compare
C) Export from the other domain and import into a project in the same domain as the one you are working in.
D) Cross Project Compare

Solutions: