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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

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

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

2. You are asked to convert a relational source, as shown in the exhibit, into three separate XML files. How would you accomplish this task?

A) Set "Output mode" setting "Segregate" on column "Customer ID" under "Transformation Settings" of the Output link of an XML Output stage.
B) Set "Output mode" setting "Single row" under "Transformation Settings" of the Output link of an XML Output stage.
C) Set "Output mode" setting "Break" on column "Customer ID" under "Transformation Settings" of the Output link of an XML Output stage.
D) Set "Output mode" setting" Split rows" under "Transformation Settings" of the Output link of an XML Output stage.

3. A copy of a production job was moved into a development project and modified to improve performance. You must prepare a report for a code review that documents the changes to the job.
How would you gather the information for this report? (Select two)

A) diffapicmdline.exe
B) DSMakeJobReport
C) Compare Within
D) Cross Project Compare

4. 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 state column to "Don't sort, previously sorted.".
C) In the second Sort stage change the Sort Mode property of the area column to "Don't sort, previously sorted.".
D) Remove the first Sort stage. Retain the existing sort keys in the second Sort stage.

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) 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.
B) 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.
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 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.
E) Output the sum that you generated each time you process a row for which the LastRow() function returns True.

Solutions: