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IBM InfoSphere DataStage v8.5 Sample Questions:

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

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

2. Click the Exhibit button.

These three Sequential Files shown in the exhibit need to be joined. Join_1 is on Columns CustID and OrderID. Join_2 is on CustID and LocationID. What is the most efficient hash partitioning strategy for each link?

A) For LinkA Hash Partition on CustID and OrderID; For LinkB Hash Partition on CustID and OrderID; For LinkC Hash Partition on CustID and LocationID; For LinkD Hash Partition on CustID and LocationID.
B) For LinkA Hash Partition on OrderID and CustID; For LinkB Hash Partition on OrderID and CustID; For LinkC Hash Partition on LocationID and CustID; For LinkD Hash Partition on LocationID and CustID.
C) For LinkA Hash Partition on CustID, OrderID and LocationID; For LinkB Hash Partition on CustID, OrderID and LocationID; For LinkC Hash Partition on CustID, OrderID and LocationID; For LinkD Hash Partition on CustID, OrderID and LocationI
D) For LinkA Hash Partition on CustID;
For LinkB Hash Partition on CustID;
For LinkC Same Partition;
For LinkD Hash Partition on CustID.

3. A customer is complaining of poor performance from the job shown in the exhibit, which aggregates and joins on ZIP code. Currently all partitioning is set to "Auto" and sort/partition insertion is allowed.

What would give the best performance improvement for the job?

A) Hash partition and sort on ZIP code on the input links to the Aggregator and Join stages.
B) Hash partition and sort on ZIP code prior to the Copy stage, and use same partitioning on the Aggregator and Join stages.
C) Use same partitioning on all input links in the job; create the input data set by hash-partitioning its input on ZIP code.
D) Hash partition and sort on ZIP code prior to the Copy stage and use entire partitioning on the output of the Aggregator stage.

4. You have been given operational requirements to introduce data recovery to one of your parallel job designs. Additionally, you have been told that you are to use flat files as your intermediate data structure. Which two tasks will accomplish these objectives? (Choose two.)

A) Enable checkpoint restartability in each of your parallel stages.
B) Break up the design by splitting it into at least two parallel jobs.
C) Use the Hash File stage to write and read data between parallel jobs.
D) Use the Sequential stage to export and import data between jobs.

5. What are three valid join operations for the Join stage? (Choose three.)

A) Left outer join
B) Inner Join
C) Right outer join
D) Bottom inner join
E) Top outer join

Solutions: