Assessment: IBM InfoSphere DataStage v9.1 Assessment: A2090-303 Exam Premium File as PDF & Test Engine

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IBM Assessment: IBM InfoSphere DataStage v9.1 Assessment Sample Questions:

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

2. Modular development techniques should be used to maximize re-use of DataStage jobs and components. Which statement represents Modular Development techniques?

A) Job parameters should be used in Job Names.
B) Job parameterization allows a single job design to process similar logic instead of creating multiple copies of the same job.
C) Create a standard directory structure inside of the DataStage project directory for source and target files.
D) Hard code the Invocation ID to improve development process.

3. Which partitioning method requires a key?

A) Sort Merge
B) Same
C) Modulus
D) Round Robin

4. What is the purpose of the APT_DUMP_SCORE environment variable?

A) There is no such environment variable.
B) It is an environment variable that turns on the job monitor.
C) It is an environment variable that enables the collection of runtime performance statistics.
D) It is a reporting environment variable that adds additional runtime information in the job log.

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

Solutions: