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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. What two features enable a job with a Sequential File stage to read from sequential files with different numbers of columns and types? (Select two)

A) Schema File property
B) Runtime Column Propagation
C) Vector data type
D) Subrecord data type

2. Which three of the following actions are available when editing a message handler? (Select three)

A) Demote to informational
B) Demote to warning
C) Promote to warning
D) Abort Job
E) Suppress from job log

3. There is a requirement to load mainframe data with array columns having redefined fields into a flat file. How can the Complex Flat File

A) Select the Records ID tab on the Stage page. Select a record from the Records list. Select the column(s) with the redefine from the Column list. Within CFF, use the Complex File Load Option window with "Flatten selective arrays" option selected.
B) Within CFF, use the Complex File Load Option window with "Flatten all arrays" option selected. CFF will handle flattening automatically.
C) CFF does not support flattening for redefined fields.
D) Within CFF, use the Complex File Load Option window with "Flatten selective arrays" option selected. Select the array with redefine column(s) and click redefine check box option.

4. You have a dataset that is range-partitioned and sorted. Which technique is most efficient to create globally sorted data file?

A) Select Ordered collector method for the input link of the final Sequential File stage.
B) Select SortMerge collector method for the input link of the final Sequential File stage.
C) Insert Funnel stage before the final Sequential File stage and select Sequence as Funnel Type.
D) Insert Funnel stage before the final Sequential File stage and select Sort Funnel as Funnel Type.

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 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.
B) Output the sum that you generated each time you process a row for which the LastRow() function returns True.
C) 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.
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 up to the previous row each time you process a row with a "1" in the Flag column.

Solutions: