IBM C2090-418 Test Passed : IBM Websphere Datastage V.8.0

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IBM C2090-418 Exam Syllabus Topics:

IBM Websphere Datastage V.8.0 Sample Questions:

Question 1

A job reads from a sequential file using a Sequential File stage with option "number of
readers" set to "2". This data goes to a Transformer stage and then is written to a Data Set using the Data Set stage. The default configuration file has three nodes. The environment variable $APT_DISABLE_COMBINATION is set to "True" and partitioning is set to "Auto". How many processes are created?

A. 9
B. 5
C. 7
D. 12

Question 2

Click the Exhibit button.
In the exhibit, data is being read from a Sequential File stage (Read_Selling_Group_Mapping) and written to a target Data Set stage (Write_Selling_Group_Mapping_Copy). All columns are being mapped source to target in the Copy stage. After the job is executed using a 2-node configuration file, you notice that the Data Set has only one partition. What are two actions that can be done to this job to ensure Data Set has two partitions? (Choose two.)

A. Disable Runtime Column Propagation (RCP) and set "Force" option in the Data Set stage to "TRUE".
B. Disable Runtime Column Propagation (RCP) and set "Force" option in the Copy stage to "TRUE".
C. Enable Runtime Column Propagation (RCP) and set "Force" option in the Copy stage to "FALSE".
D. Enable Runtime Column Propagation (RCP) and set "Force" option in the Copy stage to "TRUE".

Question 3

You are given a source file that was created by a COBOL program on z/OS. The corresponding COBOL copybook has hierarchical relationships on multiple levels. Which scenario would properly de-normalize the data into a single tabular output with best performance with a 4-node configuration file?

A. Use the Complex Flat File stage, setting the "Read from Multiple Nodes" property.
B. Use the Sequential File stage, setting "Number of Readers Per Node" property greater than one, pass to Split Vector stage running parallel.
C. Use the External Source stage, running in parallel, to invoke a COBOL program to parse the source file.
D. Define the output of a Complex Flat File stage as a single column, pass to the Column Import stage running in parallel to parse the output into to multiple columns.

Question 4

A customer wants to select the entire order details for the largest transaction 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. Partition on customer key, sort on customer key and transaction amount, Remove duplicates on customer key.
B. Partition and Sort the input to a Remove Duplicates stage using the customer key and transaction amount columns. Remove duplicates on customer key.
C. Partition and Sort the input to a Filter stage by customer number. Filter with the clause "MAX(transaction_amount)".
D. Use a Sort Aggregator stage with a calculated column based on the maximum value of the transaction amount column.

Question 5

Click the Exhibit button.
You are asked to populate a star schema. You decide to use the Slowly Changing Dimensions (SCD) stage to load a dimension table named PRODDIM. Based on the dump score fragment, how many Data Sets are in this job?

A. 1
B. 8
C. 9
D. 0

Solutions: