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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Which two statements are correct when referring to an Aggregator Stage? (Choose two.)

A) Use Sort method with a large number of distinct key-column values
B) Use Sort method for a limited number of distinct key values
C) Use Hash method for a limited number of distinct key values
D) Use Hash method with a large number of distinct key-column values

2. Which two statements are true about DataStage Parallel Build stages? (Choose two.)

A) Build stages can only be used in a job that has Runtime Column Propagation (RCP) enabled.
B) On the Logic Post-Loop, you specify code that runs after all input records have been processed.
C) The Build stage generates a C/C++ source file that is compiled and linked outside of DataStage.
D) The Build stage can be programmed to read and write automatically or code can be written to manually read and write rows.

3. You have been given operational requirements to introduce data recovery to one of your parallel job designs. Additionally, you have been told that you are to use flat files as your intermediate data structure. Which two tasks will accomplish these objectives? (Choose two.)

A) Use the Sequential stage to export and import data between jobs.
B) Enable checkpoint restartability in each of your parallel stages.
C) Use the Hash File stage to write and read data between parallel jobs.
D) Break up the design by splitting it into at least two parallel jobs.

4. You would like to pass values into parameters that will be used in a variety of downstream activity stages within a job sequence. What are three valid ways to do this? (Choose three.)

A) Use the UserVariablesActivity Stage to populate the local parameters from an outside source such as a file.
B) Use environment variables.
C) Use local parameters.
D) Check the "Propagate Parameters" checkbox in the Sequence Job properties.
E) Place a parameter set stage on the job sequence.

5. Which job design technique can be used to give unique names to sequential output files that are used in multi-instance jobs?

A) Use a Transformer stage variable to generate the name.
B) Use DSJobInvocationID to generate a unique filename.
C) Use parameters to identify file names.
D) Generate unique file names by using a macro.

Solutions: