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

1. What two project environment variables can be considered in your parallel jobs to support your optimization strategy of partitioning and sorting? (Choose two.)

A) $APT_PARTITION_FLUSH_COUNT
B) $APT_RESTRICT_SORT_USAGE
C) $APT_TSORT_STRESS_BLOCKSIZE
D) $APT_OPT_SORT_INSERTION
E) $APT_NO_PART_INSERTION

2. A job using a three-node configuration file writes to a target Sequential File stage. The target Sequential File stage has been set to write to two different sequential files. How many instances of the Sequential File stage will run?

A) Four instances.
B) Three instances.
C) One instance.
D) Two instances.

3. In a Transformer expression for a stage variable, there is a nullable input column. Assume the legacy NULL processing option is turned off. What happens when a row is processed that contains NULL in that input column?

A) NULL is written to the stage variable.
B) The job aborts.
C) The value written to the stage variable is undetermined.
D) The row is rejected.

4. You want to better understand the tsort operators that are inserted into the job flow at runtime. Which environment variable can provide this information?

A) $APT_DUMP_SCORE
B) $APT_STARTUP_STATUS
C) $OSH_DUMP
D) $APT_PM_PLAYER_MEMORY

5. You are asked by your customer to collect partition level runtime metadata for DataStage parallel jobs. You must collect this data after each job completes. What two options allow you to automatically save row counts and CPU time for each instance of an operator? (Choose two.)

A) $APT_CPU_ROWCOUNT
B) Open up the job in Metadata Workbench and select the "Data Lineage" option.
C) Click the Performance Analysis icon in the toolbar to open the Performance Analyzer utility.
D) $APT_PERFORMANCE_DATA
E) Enable the job property "Record job performance data".

Solutions: