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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Which of the following describes a type two update in a Slowly Changing Dimensions (SCD) stage?

A) An update the retains the existing column value in an historical row and creates a new row with the new value.
B) An update that retains the existing column value in a list and adds the new value to the list.
C) An update that replaces the existing column value if a specified condition is satisfied.
D) An update that overwrites the existing column value.

2. The given job processes large volumes of data using default partitioning, with sort/partition insertion enabled. Both source Data Sets are partitioned and sorted on the merge key. Assuming that the business logic allows all of the following actions, which design change would improve the performance of this job?

A) Set the buffer mode to "no buffer" on the output links of both Data Sets.
B) Set the "Preserve Partitioning" option on both Data Sets and replace the Merge stage with a Sort Funnel stage.
C) Before each input to the Merge stage, insert a Sort stage with "Don't Group, Previously Grouped" set on the merge key. Specify SAME partitioning on all inputs.
D) Use the Data Set Management Utility to combine both input Data Sets into a single source Data Set.

3. Where are project level message handlers defined?

A) Designer Client
B) Administrator Client
C) DSENV
D) Director Client

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

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

5. Which two statements about annotations are correct? (Select two)

A) The Short job description field displays on log summary lines within Director client.
B) An annotation can be drawn around one of more stages.
C) The Full job description field is only visible within the Designer Client.
D) The Short job description field will appears in job log when $APT_PM_SHOW_PIDS is set.

Solutions: