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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. Rows of data going into a Transformer stage are sorted and hash partitioned by the Input.Product column. Using stage variables, how can you determine when a new row is the first of a new group of Product rows?

A) Create a stage variable named sv_Product and follow it by a second stage variable named
sv_IsNewProduct . Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product = sv_Product THEN "YES"
ELSE "NO".
B) Create a stage variable named sv_IsNewProduct and follow it by a second stage variable
named sv_Product. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product = sv_Product THEN "YES"
ELSE "NO".
C) Create a stage variable named sv_IsNewProduct and follow it by a second stage variable
named sv_Product. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product <> sv_Product THEN "YES"
ELSE "NO".
D) Create a stage variable named sv_Product and follow it by a second stage variable named
sv_IsNewProduct . Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product <> sv_Product THEN "YES"
ELSE "NO".

2. You are responsible for managing job changes for you project team. You must update the source code repository through Eclipse Team source code integration whenever a developer notifies you of an asset change.
What two tasks allow you to update the source code repository with the changed asset? (Select two)

A) Right-click the asset and click the Team command to commit the artifact to the source control system.
B) Right-click the asset and click the Deploy command
C) Right-click the asset and click the Send to Source Control Work Space.
D) Right-click the asset and click the Build command

3. What are two advantages of using Runtime Column Propagation (RCP)? (Choose two.)

A) Sequential files don't require schema files when using RCP.
B) Only columns used in the data flow need to be defined.
C) Columns not specifically used in the flow are propagated as if they were.
D) RCP is not a feature of DataStage.
E) Only columns that are defined as VarChar need RCP enabled.

4. 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) Export
C) Deploy
D) Package
E) Build

5. You are processing groups of rows in a Transformer. The first row in each group contains "1" in the Flag column and "0" in the remaining rows of the group. At the end of each group you want to sum and output the QTY column values. Which three techniques will enable you to retrieve the sum of the last group? (Choose three.)

A) Output a running total for each group for each row. Follow the Transformer stage by an Aggregator stage. Take the MAX of the QTY column for each group.
B) Within each group sort the Flag column in ascending order. Output the sum each time you process the row with a "1" in the Flag column.
C) Output the sum that you generated up to the previous row each time you process a row with a "1" in the Flag column.
D) Output the sum that you generated each time you process a row for which the LastRow() function returns True.
E) Output the sum that you generated up to the previous row each time you process a row with a "1" in the Flag column. Use the LastRow() function to determine when the last group is done.

Solutions: