IBM Specialist C2090-421

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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

Question #1
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 "Preserve Partitioning" option on both Data Sets and replace the Merge stage with a Sort Funnel stage.
B. Use the Data Set Management Utility to combine both input Data Sets into a single source Data Set.
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. Set the buffer mode to "no buffer" on the output links of both Data Sets.

Question #2
You need to find the differences between the jobs in the Test project and theit older version in the Production project. You discover that the Production project is on another domain. What feature would find the differences in a job that is in a project on a different domain?

A. Cross Project Compare
B. Export from the other domain and import into a project in the same domain as the one you are working in.
C. DataStage Version Control
D. Cross Domain Compare

Question #3
You are setting up user roles on Information Server Web console. Which two roles are required to allow a user to edit DataStage jobs? (Select two)

A. Information Analyzer Data Administrator
B. Suite User role
C. DataStage super operator
D. DataStage Developer

Question #4
You are asked to identify the jobs and shared containers that use the ADDRESS column. The Size has changed from 50 to 120 characters in the source system so the jobs must be updated with the new size. What feature of the Designer will locate where a column is used in a DataStage project?

A. Select a Table Definition, then right click and choose Find where column is used. Select the column to search for from the list.
B. Open the Table Definition properties, Select the ADDRESS column, then right click and select Find where used.
C. From Designer Tools, open an Advanced Find dialog. Enter the column name in the Name to find field. Select Jobs and Shared Containers from the Type to find list.
D. From Designer Tools open an Advanced Find dialog. Select Columns from the Type list and enter the column name in the Name To Find field.

Question #5
Which three statements are true about stage variables? (Select three)

A. Stage variables are executed before loop variables.
B. Stage variables are executed after constraints but before derivations.
C. A derivation for a stage variable can reference stage variables that are later in the execution order.
D. Stage variables cannot contain NULL values.
E. Stage variables retain their values between rows in the stage.

Solutions: