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IBM InfoSphere DataStage v9.1 Sample Questions:

1. Each row contains the CustID, ProductID, ProductType and TotalAmount columns. You want to retain the record with the largest value in the TotalAmount column for each CustID and ProductType using a RemoveDuplicates stage. How can this be accomplished?

A) Hash-partition on CustID. Sort on CustID, ProductType and TotalAmount.
B) Hash-partition on TotalAmount. Sort on CustID, ProductType and TotalAmount.
C) Hash-partition on CustID, ProductType and TotalAmount. Sort on CustID, ProductType and TotalAmount.
D) Hash-partition on ProductType. Sort on ProductType, CustID and TotalAmount.

2. Which partitioning method requires a key?

A) Sort Merge
B) Same
C) Round Robin
D) Modulus

3. 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) $OSH_DUMP
B) $APT_PM_PLAYER_MEMORY
C) $APT_STARTUP_STATUS
D) $APT_DUMP_SCORE

4. Your customer is using Source Code Control Integration for Information server and have tagged artifacts for version 1. You must create a deployment package from the version 1. Before you create the package you will have to ensure the project is up to date with version 1. What two things must you do to update the meta-data repository with the artifacts tagged as version 1? (Choose two.)

A) Right-click the asset and click the Deploy command.
B) Right-click the asset and click Update From Source Control Workspace.
C) Right-click the asset and click the Team command to update the Source Control Workspace with the asset.
D) Right-click the asset and click the Team Import command.
E) Right-click the asset and click Replace From Source Control Workspace.

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

Solutions: