IBM C2090-421 - InfoSphere DataStage v8.5

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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. What two data sources support direct lookups? (Select two)

A) Oracle
B) ODBC
C) DB2
D) Teradata
E) SqIServer

2. The purchase history record contains CustID, ProductID, ProductType and TotalAmount. You need to retain the record of greatest TotalAmount per CustID and ProductType using RemoveDuplicate stage. Which two statements accomplish this requirement? (Choose two.)

A) Hash-partition on CustID and ProductType;
Sort on CustID, ProductType and TotalAmount.
B) Hash-partition on ProductType;
Sort on ProductType, CustID and TotalAmount.
C) Hash-partition on CustID, ProductType and TotalAmount;
Sort on CustID, ProductType and TotalAmount.
D) Hash-partition on CustID;
Sort on CustID, ProductType and TotalAmount.

3. Records in a source file must be aggregated for further processing. Which two conditions would require the use of a Transformer stage instead of or in addition to an Aggregator stage? (Choose two.)

A) The data hasn't been sorted or grouped.
B) Aggregation results outside of a certain range need to be flagged as abnormal.
C) A global aggregation across all partitions is needed.
D) The aggregation is a custom formula for your enterprise.

4. 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) Break the input file into multiple files.
B) Alter the number of partitions in the $APT_CONFIG_FILE.
C) Use Round Robin partitioning on the stream and Entire partitioning on the reference.
D) Replace the Join with a Merge stage.

5. You have a parallel shared container that is used by other parallel jobs within your project. Part of the logic in this shared container has been changed. Which two statements are true regarding this change to the parallel shared container? (Choose two.)

A) Jobs using this parallel shared container need to be re-compiled only when the metadata of the container is changed.
B) You can create a sequencer to re-compile all of the routines using this shared container.
C) Use usage analysis and multi-compile to re-compile job using this shared container.
D) Jobs using this parallel shared container need to be re-compiled.

Solutions: