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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. 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 prior to the Copy stage and use entire partitioning on the output of the Aggregator stage.
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 same partitioning on the Aggregator and Join stages.
D) Hash partition and sort on ZIP code on the input links to the Aggregator and Join stages.

2. What three statements are true with regards to restartable mode for an FTP Enterprise stage? (Select three)

A) Optionally specify a unique job_id for the transfer.
B) Specify a checkpoint directory for the transfer using the -checkpointdir directory.
C) Specify the-restartable_transfer option.
D) File URIs that were transferred completely are not transferred again.
E) Checkpoint files are written to /^"checkpoint directory">/pftpJobid_ <"jobid number">.

3. A job is using the Load method in the DB2 and Oracle Enterprise stage for parallel loading into a single table. The job fails at runtime and you see there are new table rows added. What would explain this result? (Select two)

A) Load operations are parallel.
B) Load operations are sequential.
C) Some partitions completed before failure.
D) Commit size is smaller than source data.

4. Which two partitioning methods require keys? (Choose two.)

A) Modulus
B) Hash
C) Entire
D) Round Robin

5. Click on the Exhibit button.

Provided you have enough system resources, what is the maximum number of jobs that could be running concurrently in this image?

A) 2
B) 4
C) 5
D) 3

Solutions: