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

1. A 100MB input dataset has even distribution across 400 unique key values. When you run with a 4-node configuration file, which two changes could improve sort performance in this scenario? (Choose two.)

A) Specify Round Robin partitioning on the input link to the Sort stage.
B) Specify "Restrict Memory Usage" to 60MB on the Sort stage properties.
C) Set $APT_TSORT_STRESS_BLOCKSIZE to 50M
D) Alter the Sort stage properties to perform a stable sort.
E) Convert all numeric fields to varchars.

2. You have created three parallel jobs (Job A, B and C) in which the output of one job is the input to the other job. You are required to create processing that manages this data relationship of the jobs and provide job level restart-ability. What two tasks will accomplish these objectives? (Choose two.)

A) Enable the 'Add checkpoints so container is restartable' option for each of the parallel shared containers.
B) Set the 'Add checkpoints so sequence is restartable' option in the Sequencer job.
C) Enable runtime column propagation for the job sequence running the jobs.
D) Create two parallel shared containers that has the logic of Job B and Job C and include those shared containers in the correct flow order within the design of Job A.
E) Create a Sequencer job that has triggered events configured allowing Job A to run first, then Job B to run when A completes successfully, and then Job C to run when Job B completes successfully.

3. In the Slowly Changing Dimension stage, a dimension columns Purpose code property can trigger which two actions. (Choose two.)

A) Detect dimension changes.
B) Insert rows into the fact table.
C) Update the dimension table.
D) Update fact table keys.
E) Delete duplicate dimension table rows.

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

5. When you run a parallel job, any error messages and warnings are written to the job log and can be viewed from the Director client. What message handler level is available?

A) parameter level
B) stage level
C) project level
D) record level

Solutions: