IBM C2090-418

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IBM C2090-418 Exam Syllabus Topics:

IBM Websphere Datastage V.8.0 Sample Questions:

Question #1
You are assigned to write a job which reads a sequential file, applies business logic, and writes the results to one or more flat-files. However, the number and names of the input columns may vary from one input file to the next. You are guaranteed that a core set of columns required to perform the business logic will always be present, though not necessarily in the same place on the input record. Which two features would you use to build this job? (Choose two.)

A. Data Set
B. Schema File
C. Runtime Column Propagation
D. $APT_EXPORT_INCLUDE_SCHEMA

Question #2
A credit card company has about 10 million unique accounts. The company needs to determine the outstanding balance of each account (Account_id) by aggregating the previous balance with current charges. A multi-node DataStage job with an Aggregator stage is being used to perform this calculation. Which three tasks are required for optimal performance? (Choose three.)

A. Use "Hash" partition on Account_id going into the Aggregator stage.
B. Use "Hash" Aggregator method.
C. Use "Sort" Aggregator method.
D. Use "Round Robin" partition on Account_id for even distribution of records.
E. Sort data on Account_id going into the Aggregator stage.

Question #3
You have a job sequence that runs J1, J2, and J3 sequentially. It has been compiled with "Add checkpoints so sequence is restartable". J1 must execute every run even after a
failure. Which two properties must be selected to ensure that J1 is run each time, even after a failure? (Choose two.)

A. In the J1 Activity stage set the Execution action to "Reset if required, then run.".
B. Set trigger on the J1 Activity stage to "Unconditional".
C. Use the Nested Condition Activity with a trigger leading to J1; set the trigger expression type to "Unconditional".
D. Set the J1 Activity stage to "Do not checkpoint run.".

Question #4
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 External Source stage, running in parallel, to invoke a COBOL program to parse the source file.
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 Complex Flat File stage, setting the "Read from Multiple Nodes" property.
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 #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. 9
C. 0
D. 8

Solutions: