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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

Question 1

How must the input data set be organized for input into the join stage? (Choose two.)

A. Sorted in ascending order
B. Key partitioned
C. Entire partitioned
D. Hash partitioned
E. Unsorted

Question 2

A customer is complaining of poor performance from the job shown in the exhibit, which aggregates and joins on ZIP code. Currently all partitioning is set to "Auto" and sort/partition insertion is allowed.

What would give the best performance improvement for the job?

A. Hash partition and sort on ZIP code on the input links to the Aggregator and Join stages.
B. Use same partitioning on all input links in the job; create the input data set by hash-partitioning its input on ZIP code.
C. Hash partition and sort on ZIP code prior to the Copy stage and use entire partitioning on the output of the Aggregator stage.
D. Hash partition and sort on ZIP code prior to the Copy stage, and use same partitioning on the Aggregator and Join stages.

Question 3

A job design consists of an input sequential file, a Modify stage, followed by a Filter stage and an output SequentialFile stage. The job is run on an SMP machine with a configuration file defined with three nodes. No environment variables were set for the job. How many osh processes will this job create?

A. 8
B. 16
C. 9
D. 11

Question 4

You are working on a project that contains a large number of jobs contained in many folders. You would like to review the jobs created by the former developer of the project. How can you find these jobs?

A. Filter jobs in Director Client's Repository window.
B. Sort the jobs by date in the Repository window.
C. While selecting the top folder in the project, choose Find Dependencies.
D. Use the Advanced Find feature contained in the Designer interface.

Question 5

If you do not alter any of the Format settings, the Sequential File stage will produce a file with what three types of format? (Choose three.)

A. Variable length columns are contained within double quotes.
B. All columns are delimited by a comma, except for the final column in a row.
C. All columns are delimited by a comma.
D. Rows are delimited by a DOS newline.
E. Rows are delimited by a UNIX newline.

Solutions: