IBM A2090-421

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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. Which two statements are true for named node pools? (Select two)

A) Using appropriately named node pools allow the separation of buffering from sorting disks.
B) Using appropriately named node pool constraints limit stages to be executed only on the nodes defined in the node pools.
C) Using appropriately named node pools is only available in clustered environments.
D) Using appropriately named node pools force DataStage jobs to use named pipes between stages.
E) Named node pools are required for DataStage jobs to scale across multiple machines on a grid or cluster.

2. What is the correct restructure stage to extract data from four input columns (three of which carry vectors) and output them into two columns with one vectors in a subrecord and the non-vector carrying column being passed through the stage?

A) Split Subrecord Stage
B) Column Export Stage
C) Column Import Stage
D) Make Subrecord Stage

3. In the job fragment shown in the exhibit, there are two Sort stages: the first (Sort1) sorts the data by state, the second (Sort2) sorts the data by state and area, No repartitioning occurs between the stages.
You have been asked to reduce the number of sorts to improve the performance of the job.

Which two ways might be used to accomplish this without changing how the job functions? (Select two)

A) Remove the second Sort stage. Add area as an additional sort key.
B) In the second Sort stage change the Sort Mode property of the area column to "Don't sort, previously sorted.".
C) In the second Sort stage change the Sort Mode property of the state column to "Don't sort, previously sorted.".
D) Remove the first Sort stage. Retain the existing sort keys in the second Sort stage.

4. In which two situations is it appropriate to use a Sparse Lookup? (Choose two.)

A) When reference data is significantly larger than the streaming data (100:1).
B) When accessing DB2 data using the DB2 API stage.
C) When invoking a stored procedure within a database per row in the streaming link.
D) When the output of the Lookup stage needs to be hashed partitioned.

5. You are describing to your customer how to work with packages. There are two steps that must be carried out in order to move the package to a target project. Which two steps must be carried out to move the DataStage objects to the Production system? (Choose two.)

A) Compile
B) Package
C) Export
D) Build
E) Deploy

Solutions: