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IBM InfoSphere DataStage v9.1 Sample Questions:

1. Each row contains the CustID, ProductID, ProductType and TotalAmount columns. You want to retain the record with the largest value in the TotalAmount column for each CustID and ProductType using a RemoveDuplicates stage. How can this be accomplished?

A) Hash-partition on CustID. Sort on CustID, ProductType and TotalAmount.
B) Hash-partition on CustID, ProductType and TotalAmount. Sort on CustID, ProductType and TotalAmount.
C) Hash-partition on ProductType. Sort on ProductType, CustID and TotalAmount.
D) Hash-partition on TotalAmount. Sort on CustID, ProductType and TotalAmount.

2. Which two file stages allow you to configure rejecting data to a reject link? (Choose two.)

A) Lookup File Set Stage
B) Big Data File Stage
C) Data Set Stage
D) Complex Flat File Stage
E) Compare Stage

3. A DataStage job uses an Inner Join to combine data from two source parallel datasets that were written to disk in sort order based on the join key columns. Which two methods could be used to dramatically improve performance of this job? (Choose two.)

A) Unset the Preserve Partitioning flag on the output of each parallel dataset.
B) Set the environment variable $APT_SORT_INSERTION_CHECK_ONLY.
C) Explicitly specify hash partitioning and sorting on each input to the Join stage.
D) Disable job monitoring.
E) Add a parallel sort stage before each Join input, specifying the "Don't Sort, Previously Grouped" sort key mode for each key.

4. How must the input data set be organized for input into the Join stage? (Choose two.)

A) Unsorted
B) Entire partitioned
C) Hash partitioned
D) Key partitioned
E) Sorted by Join key

5. In your job you are using a Sequential File stage as a source. You have decided to use a schema file as an alternative way of specifying column definitions and record format properties. What two items are true in configuring this stage in your parallel job? (Choose two.)

A) Configure the Schema File property with the path of the schema file definition.
B) Configure the APT_SEQFILE_HASSCHEMA property with the schema file path.
C) Enable Run Time Schema propagation.
D) Enable Run Time Column propagation.
E) Configure the column tab with one column named 'Input'.

Solutions: