A file contains a very large number of records with unique groups based on a key. Which Grouping Method would you prefer to use in the Aggregate Stage for aggregating the data?
A. Random
B. Hash
C. Round Robin
D. Sort
正解:D
質問 2:
Which of the following statements about Collecting methods is correct?
A. AUTO chooses the best method between ROUND ROBIN, SORT MERGE, and ORDERED
B. SORT MERGE never performs data sorting
C. ORDERED ensures the collected data stream being sorted
D. ROUND ROBIN is the fastest algorithm
正解:B
質問 3:
A DataStage job can be executed from_______________
A. DataStage Administrator or Director client
B. DataStage Designer or Director client.
C. DataStage Administrator client only
D. DataStage Director client only
正解:B
質問 4:
Which of the following statements about partitioning algorithms is correct?
A. The grouping methods available in the Aggregator stage are MODULUS and HASH
B. MODULUS and HASH ensure balanced data volumes in all the partitions
C. For the Lookup reference stage, DataStage always uses the MODULUS method
D. SAME partitioning method is the fastest algorithm because it does not require additional processing
正解:D
質問 5:
Under which scenario may a user benefit from using InfoSphere Discovery?
A. All of the above
B. Automate transformation rule discovery
C. Automate business object identification
D. Prototype a data model for the first time
E. Automate data relationship discovery
正解:A
質問 6:
Which of the following stages is NOT a file data access stage?
A. Dataset Stage
B. FileSet Stage
C. Sequential File Stage
D. Transformer Stage
正解:D



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