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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. A scenario requires selecting only the most recent transactions for each of 2 million unique customers, from a 20 million row DB2 source table containing order history. Which parallel job design would satisfy this functional requirement?

A) Select all rows using the ODBC Connector stage, use a Sort Aggregator on customer number key to select the maximum order date.
B) Using the DB2 API stage, select all rows. Use a Sort stage with customer number and order date sort keys in ascending order, then Remove Duplicates with Last Duplicate to retain.
C) Using the Dynamic Relational stage, use custom SQL to select all DISTINCT customer numbers from the order history table.
D) Using the DB2 Enterprise stage, select all rows. Perform a unique Sort using customer number and order date sort keys in ascending order.

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

A) Named node pools constraints will limit stages to be executed only on the nodes defined in the node pools.
B) Named node pools can allow separation of buffering from sorting disks.
C) Using appropriately named node pools forces DataStage to use named pipes between stages.
D) Clustered environments must have named node pools for data processing.

3. 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_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".
B) 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".
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".

4. You are describing to your customer how to work with packages. There are two steps that must be carried out in order to move the package to a target project. Which two steps must be carried out to move the DataStage objects to the Production system? (Choose two.)

A) Deploy
B) Build
C) Compile
D) Package
E) Export

5. What are two ways to specify a stylesheet in an XML input stage? (Choose two.)

A) On the output link columns properties tab, type the stylesheet in the XLST box.
B) On the output link columns properties tab, identify an input column that contains the stylesheet URL.
C) On the output link advanced properties tab, type the stylesheet in the Stylesheet box.
D) On the output link advanced properties tab, load the content or path of a stylesheet that is stored on the engine tier host.

Solutions: