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IBM InfoSphere DataStage v8.5 Sample Questions:

1. How is DataStage Table Metadata shared among DataStage projects?

A) Import another copy of the table metadata into the project where it is required.
B) Export DataStage Table Definitions from one project and importing them into another project.
C) Use the Import/Export Manager to move the DataStage Table Definition to the projects where it is needed.
D) Use the "Shared Table Creation Wizard" to create a copy of the table in the shared repository.
E) DataStage Tables cannot be shared between projects.

2. Which three statements are true about stage variables in a Transformer Stage? (Choose three.)

A) Stage variables are refreshed with default values before each new input row is processed.
B) The expression executed for a stage variable can refer to a stage variable which is executed later.
C) Stage variables can be set to NULL.
D) A stage variable in one Transformer can refer to a stage variable in another Transformer, as long as the second Transformer was processed earlier in the job flow.
E) Varchar stage variables can be initialized with spaces.

3. What two repositories does the Source Code Control Integration for DataStage and QualityStage serve? (Choose two.)

A) Information Server meta-data Repository
B) Source Code Repository
C) Universe Project Repository
D) Information Analyzer Repository

4. Your job runs slowly and does not scale beyond two nodes. It appears the data has been partitioned on the DoNotCall flag, which has accumulating totals based on this flag using a sort method.
Which technique would improve scalability and performance?

A) Change the partitioning method to Round Robin; add a second Aggregator stage with Execution mode 'Sequential' and
B) Change the preserve partitioning option on the stage ahead of the aggregator to clear partitioning.
C) Add an additional column for partitioning to result in additional data partitions.
D) Increase the number of physical nodes available for partitioning.

5. Which two statements are true about the usage of scratch disk? (Choose two.)

A) The Sort stage always uses the scratch disk.
B) If "buffer" scratch disk pool is defined, the framework uses this disk pool and the default disk pool.
C) The parallel framework uses the disk space specified in the scratch disk setting to buffer virtual data set records.
D) You can define multiple scratch disk spaces to distribute disk I/O.

Solutions: