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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. Configuring the weighting column of an Aggregator stage affects which three options. (Choose three.)

A) Percent Coefficient of Variation
B) Maximum Value
C) Sum of Weights
D) Corrected Sum of Squares
E) Sum

2. What would help debug the run-time environment?

A) $OSH_PRINT_SCHEMAS
B) View detailed runtime stats through Job monitor in Director Client.
C) $APT_VERBOSE
D) Check the message filters for the job.

3. Which two tasks can the Slowly Changing Dimensions (SCD) stage perform? (Choose two.)

A) Look up whether a record with a matching business key value exists in a fact table. If it does not, retrieve a new surrogate key value and insert a new row into the fact table.
B) Look up whether a record with a matching business key value exists in a dimension table. If it does not, retrieve a new surrogate key value and insert a new row into the dimension table.
C) Look up whether a record with a matching business key value exists in a dimension table. If it does, add new values for selected fields to values lists for those fields.
D) Look up whether a record with a matching business key value exists in a dimension table. If it does, mark the record as not-current, and generate a new record with new values for selected fields.

4. Which three environment variables are used for reporting on DataStage jobs? (Select three)

A) $OSH_PRINT_SCHEMAS
B) $APT_DISABLE_ROOT_FORKJOIN
C) $APT_PM_PLAYER_MEMORY
D) $APT_DUMP_SCORE
E) $APT_PM_STARTUP_CONCURRENCY

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

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

Solutions: