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IBM InfoSphere DataStage v8.5 Sample Questions:

1. What are the three aggregation types can be set in the Aggregator stage? (Select three)

A) Recalculate
B) Count Rows
C) Calculate
D) Sum Rows
E) Count Values

2. A scenario requires selecting only the most recent transactions for each of 2 million unique customers, from a 20 million row DB2 source table containing order history. Which parallel job design would satisfy this functional requirement?

A) Using the DB2 API stage, select all rows. Use a Sort stage with customer number and order date sort keys in ascending order, then Remove Duplicates with Last Duplicate to retain.
B) Select all rows using the ODBC Connector stage, use a Sort Aggregator on customer number key to select the maximum order date.
C) Using the Dynamic Relational stage, use custom SQL to select all DISTINCT customer numbers from the order history table.
D) Using the DB2 Enterprise stage, select all rows. Perform a unique Sort using customer number and order date sort keys in ascending order.

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

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

4. Your job sequence must be restartable. It runs Job1, Job2, and Job3 serially. It has been compiled with "Add checkpoints so sequence is restartable". Job1 must execute every run even after a failure. Which two properties must be selected to ensure that Job1 is run each time, even after a failure? (Choose two.)

A) Set trigger on the Job1 Activity stage to "Unconditional".
B) Set the Job1 Activity stage to "Do not checkpoint run.".
C) In the Job1 Activity stage set the Execution action to "Reset if required, then run.".
D) Use the Nested Condition Activity with a trigger leading to Job1; set the trigger expression type to "Unconditional".

5. When you run a parallel job, any error messages and warnings are written to the job log and can be viewed from the Director client. What two levels of message handlers are there? (Choose two.)

A) job level
B) project level
C) record level
D) stage level

Solutions: