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

1. Which statement describes a SCD Type One update in the Slowly Changing Dimension stage?

A) Overwrites an attribute in the fact table.
B) Adds a new row to the fact table.
C) Adds a new row to a dimension table.
D) Overwrites an attribute in a dimension table.

2. Which two parallel job stages allow you to use partial schemas? (Choose two.)

A) Column Export stage
B) Peek stage
C) Data Set stage
D) External Target stage
E) File Set stage

3. Which two commands start a DataStage job named procRows in a project named DSProject. It also passes the value 200 to the numRows parameter. (Choose two.)

A) dsjob -run -mode validate -param numRows=200 DSProject procRows
B) dsjob -run -mode normal -param numRows=200 DSProject procRows
C) dsjob -run -queue HighPriority -param numRows=200 DSProject procRows
D) dsjob -run -mode normal -paramfile numRows=200 DSProject procRows
E) dsjob -run -paramfile numRows=200 DSProject procRows

4. 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) Disable job monitoring.
D) Add a parallel sort stage before each Join input, specifying the "Don't Sort, Previously Grouped" sort key mode for each key.
E) Explicitly specify hash partitioning and sorting on each input to the Join stage.

5. You are using the Complex Flat File stage as a source in your job. What are two types of data specifically supported by the Complex Flat File stage for your job? (Choose two.)

A) Data from flat files that contain multiple record types.
B) XML files.
C) Mainframe data files with DB2 tables.
D) Mainframe data sets with VSAM files.
E) Data from files that contain Hadoop record types.

Solutions: