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IBM InfoSphere DataStage v8.5 Sample Questions:

1. In the exhibit, the Aggregator stage aggregates over CustomerID. The Join stage joins by CustomerID. When the score is created, DataStage will insert hash partitioners and tsort operators to ensure the correct results.

Which two choices will eliminate sort operators from being inserted at run-time? (Select two)

A) Add a Sort stage before the Copy stage and specify Same partitioners for the links going into the Aggregator and Join stages.
B) Add Sort stages in front of the Join stage and specify the Same partitioner for the links going into the Join. Set the $APT_NO_SORT_INSERTION environment variable to "True".
C) Add a Sort stage before the Copy stage and specify Auto partitioned for the links going into the Aggregator and Join stages.
D) Add a Sort stage before the Aggregator stage and specify the Same partitioner for the link going into the Aggregator Set the $APT_SORTJNSERTION_CHECK_ONLY environment variable to "True".

2. What two features enable a job with a Sequential File stage to read from sequential files with different numbers of columns and types? (Select two)

A) Vector data type
B) Runtime Column Propagation
C) Subrecord data type
D) Schema File property

3. Using a DB2 for z/OS source database, a 200 million row source table with 30 million distinct values must be aggregated to calculate the average value of two column attributes. What would provide optimal performance while satisfying the business requirements?

A) Select all source rows using a DB2 API stage. Aggregate using a Sort Aggregator.
B) Select all source rows using a DB2 Enterprise stage, use a parallel Sort stage with the specified sort keys, calculate the average values using a parallel Transformer with stage variables and output link constraints.
C) Using custom SQL with AVG functions and a DISTINCT clause, select all source rows using a DB2 Enterprise stage.
D) Using custom SQL with an ORDER BY clause based on key columns, select all source rows using the DB2 API stage. Aggregate using a Hash Aggregator.

4. A customer requests you to configure a Sequential File stage in a clustered environment. The stage must read a varying number of files each run in a single pass and append the name of the file the row was read from when an error occurs. What three steps are required to achieve this? (Select three)

A) Set environment variable $APT_IMPORT_PATTERN_USES_FILESET.
B) Specify a file pattern option along with a file name mask that captures entire file list.
C) Set environment variable $APT_SEQ_FILE_INCL_FILENAMES.
D) Specify multiple "File" properties.
E) Specify File Name Column property.

5. What are the three features of Information Server that allow you to deploy DataStage objects? (Select three)

A) Information Server Manager
B) dscc.exe
C) istool
D) Designer Client Export
E) $APT_COPY_TRANSFORMER

Solutions: