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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. Which three statements are true about File Sets? (Choose three.)

A) File sets are readable by external applications.
B) File sets are partitioned.
C) File sets have a proprietary data format which may change in future DataStage versions.
D) File sets always execute in parallel.
E) File sets are stored as header file and data files.

2. Click on the Exhibit button.

Which environment variable would provide this information?

A) APT_PM_PLAYER_TIMING
B) APT_DEBUG_PARTITION
C) APT_SHOW_COMPONENT_CALLS
D) APT_STATUS

3. You are asked by management to document all jobs written to make future maintenance easier. Which two statements are true about annotations? (Choose two.)

A) The full job description can be identified within the Description Annotation stage.
B) The Description Annotation stage contains both the short and full descriptions for the job.
C) The Description Annotation stage can be added several times at different locations to identify business logic.
D) The background for the Description Annotation stage can be changed for each unique stage.

4. In the job fragment shown in the exhibit, the data going into the target Sequential File stage needs to be sorted by postal code. The Sort stage accomplishes this by running in Sequential mode and sorting by postal code. You have been asked to improve the performance of the job with a 4-node configuration file.

Which two changes will improve the performance of the job? (Choose two.)

A) Eliminate the existing Sort stage; define an in-stage sort in the Filter stage, sorting by postal code. In the target Sequential File stage choose the SortMerge collector.
B) Move the Sort stage in front of the Filter stage, so that the sort is performed earlier in the job.
C) Add a second Sort stage just before the existing Sort stage; run the new stage in parallel mode sorting by postal code.
D) Change the mode of the existing Sort stage to parallel mode; continue to sort by postal code. In the target Sequential File stage choose the SortMerge collector.

5. What three element Names are required to create Shared metadata? (Choose three.)

A) Schema
B) Host System
C) Database Instance
D) Database
E) Project Name

Solutions: