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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. You have a job that reads in Sequential File followed by a Transformer stage. When you run this job, which partitioning method will be used by default?

A) Hash
B) Random
C) Round Robin
D) Same

2. A job contains a Sort stage that sorts a large volume of data across a cluster of servers. Due to new requirements, the customer has requested that this sorting be done on a subset of servers identified in the configuration file to minimize impact on database nodes. The $APT_CONFIG_FILE shows no sort disk pool for any node. Which two steps will accomplish this? (Choose two.)

A) Assign a separate config file just for the Sort stage.
B) Define a non-default node pool with a subset of nodes in the parallel configuration file.
C) Have an appropriate node constraint within the Sort stage.
D) Use the environment variable $APT_SCRATCH_SPACE_SORT_USAGE.
E) Create a sort scratch disk pool with a subset of nodes in the parallel configuration file.

3. In which two situations is it appropriate to use a Sparse Lookup? (Choose two.)

A) When invoking a stored procedure within a database per row in the streaming link.
B) When accessing DB2 data using the DB2 API stage.
C) When the output of the Lookup stage needs to be hashed partitioned.
D) When reference data is significantly larger than the streaming data (100:1).

4. The number of File Set data files created depends upon what three items? (Choose three.)

A) Number of physical processing nodes.
B) Schema definition of the file.
C) Number of disks in the export or default disk pool connected to each processing node in the default node pool
D) Number of processing nodes in the default node pool.
E) File system limitations.

5. What conditions are necessary for a master record and an update record to merge?

A) none of the columns in the input record match the columns in the update record
B) both records have the same values for the merge key column(s) that you specify
C) some of the columns in the input record match the columns in the update record
D) all of the columns in the input record match the columns in the update record

Solutions: