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

1. Rows of data going into a Transformer stage are sorted and hash partitioned by the Input.Product column. Using stage variables, how can you determine when a new row is the first of a new group of Product rows?

A) Create a stage variable named sv_IsNewProduct and follow it by a second stage variable
named sv_Product. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product <> sv_Product THEN "YES"
ELSE "NO".
B) Create a stage variable named sv_Product and follow it by a second stage variable named
sv_IsNewProduct. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product = sv_Product THEN "YES"
ELSE "NO".
C) Create a stage variable named sv_IsNewProduct and follow it by a second stage variable
named sv_Product. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product = sv_Product THEN "YES"
ELSE "NO".
D) Create a stage variable named sv_Product and follow it by a second stage variable named
sv_IsNewProduct. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product <> sv_Product THEN "YES"
ELSE "NO".

2. When optimizing a job, Balanced Optimization will NOT search the job for what pattern?

A) Links
B) Sequencers
C) Stages
D) Property Settings

3. A job design consists of an input Row Generator stage, a Filter stage, followed by a Transformer stage and an output Sequential File stage. The job is run on an SMP machine with a configuration file defined with three nodes. The $APT_DISABLE_COMBINATION variable is set to True. How many player processes will this job generate?

A) 10
B) 12
C) 8
D) 16

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

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

5. A job design consists of an input Row Generator stage, a Sort stage, followed by a Transformer stage and an output Data Set stage. The job is run on an SMP machine with a configuration file defined with four nodes. The $APT_DISABLE_COMBINATION variable is set to True. How many player processes will this job generate?

A) 16
B) 16
C) 13
D) 7

Solutions: