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IBM A2090-303 Exam Syllabus Topics:

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

1. 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_PM_PLAYER_MEMORY
C) $OSH_DUMP
D) $APT_STARTUP_STATUS

2. 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) Alter the Sort stage properties to perform a stable sort.
D) Convert all numeric fields to varchars.
E) Specify "Restrict Memory Usage" to 60MB on the Sort stage properties.

3. Which two statements are true about the use of named node pools? (Choose two.)

A) When named node pools are used, DataStage uses named pipes between stages.
B) Grid environments must have named node pools for data processing.
C) Named node pools constraints will limit stages to be executed only on the nodes defined in the node pools.
D) Named node pools limit the total number of partitions that can be specified in the configuration file.
E) Named node pools can allow separation of buffering from sorting disks.

4. Which two parallel job stages allow you to use partial schemas? (Choose two.)

A) Peek stage
B) Data Set stage
C) Column Export stage
D) File Set stage
E) External Target stage

5. What are two properties dependent of both Column for Calculation and Summary Column for Recalculation? (Choose two.)

A) Sum of Squares
B) Missing Value
C) Mean Deviation
D) Summary
E) Coefficient of Variation

Solutions: