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

1. You are responsible for deploying objects into your customers production environment. To ensure the stability of the production system the customer does not permit compilers on production machines. They have also protected the project and only development machines have the required compiler. What option will enable jobs with a parallel transformer to execute in the customers production machines?

A) Use protected projects in the production environment.
B) Add $APT_COMPILE_OPT=-portable
C) Set $APT_COPY_TRANSFORM_OPERATOR
D) Create a package with Information Server Manager and select the option to include executables.

2. How does the Complex Flat File stage (CFF) support the use of OCCURS clauses within COBOL files?

A) Each element of the OCCURS clause is treated as a column of raw data.
B) Each element of the OCCURS clause is treated as a separate element in an array.
C) Each element of the OCCURS clause is treated as a subrecord.
D) The CFF stage cannot process COBOL files with OCCURS clauses.

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

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

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

5. Two new columns have been deleted from a sequential file that a number of DataStage jobs write to. You have imported a table definition for the changed file. How can you determine what jobs might be affected by this change?

A) Select the original table definition, right-click, then click on the Find dependencies command.
B) Select the original table definition, right-click, then click on the Where used command.
C) Select the new table definition, right-click, click on the Compare against command, then select original table definition.
D) Select the new table definition, right-click, then click on the Where used command.

Solutions: