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

1. You want to find out which table definitions have been loaded into a job, and specifically which stages of the job they has been loaded into? How will you determine this?

A) Select the job, right-click, then click the Find dependencies command. Then right-click and select "Show the dependency path from the job".
B) Select the job, right-click, then click the Find dependencies (deep) command.
C) Select the job, right-click, then click the Find where used (deep) command.
D) Select the job, right-click, then click the Find where used command. Then right-click and select "Show the dependency path from the job".

2. Which derivations are executed first in the Transformer stage?

A) Input column derivations
B) Output column derivations
C) Stage variable derivations
D) Loop variable derivations

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

4. When using a Sequential File stage as a source what are the two reject mode property options? (Choose two.)

A) Set
B) Convert
C) Continue
D) Fail
E) Save

5. Two new columns have been deleted from a sequential file that a number of DataStage jobs write to. You have imported a table definition for the changed file. How can you determine what jobs might be affected by this change?

A) Select the new table definition, right-click, click on the Compare against command, then select original table definition.
B) Select the new table definition, right-click, then click on the Where used command.
C) Select the original table definition, right-click, then click on the Where used command.
D) Select the original table definition, right-click, then click on the Find dependencies command.

Solutions: