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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. Click the exhibit button.

You submit a job from DataStage Director and then log onto your DataStage Linux server to issue the command "ps -ef | grep ds" and receive the following screen: Which process is a player?

A) 7217
B) 7216
C) 7215
D) 7117

2. Which two statements are true about the usage of scratch disk? (Choose two.)

A) The parallel framework uses the disk space specified in the scratch disk setting to buffer virtual data set records.
B) If "buffer" scratch disk pool is defined, the framework uses this disk pool and the default disk pool.
C) The Sort stage always uses the scratch disk.
D) You can define multiple scratch disk spaces to distribute disk I/O.

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

A) An update that retains the existing column value in a list and adds the new value to the list.
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 replaces the existing column value if a specified condition is satisfied.

4. Your job runs slowly and does not scale beyond two nodes. It appears the data has been partitioned on the DoNotCall flag, which has accumulating totals based on this flag using a sort method.
Which technique would improve scalability and performance?

A) Add an additional column for partitioning to result in additional data partitions.
B) Increase the number of physical nodes available for partitioning.
C) Change the preserve partitioning option on the stage ahead of the aggregator to clear partitioning.
D) Change the partitioning method to Round Robin; add a second Aggregator stage with Execution mode 'Sequential' and

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

Solutions: