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IBM C2090-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Performance and Optimization | - Parallel execution tuning
|
| Data Connectivity and Integration | - Source and target systems
|
| DataStage Architecture and Fundamentals | - Core architecture concepts
|
| Monitoring and Administration | - Job control and troubleshooting
|
| Job Design and Development | - Building DataStage jobs
|
IBM InfoSphere DataStage v8.5 Sample Questions:
Records in a source file must be copied to multiple output streams for further processing. Which two conditions would require the use of a Transformer stage instead of a Copy stage? (Choose two.)
- A. Converting some input columns from integers to strings.
- B. Concatenating data from multiple input columns.
- C. Renaming one or more output columns.
- D. Directing selected output records down one output link rather than another.
Correct Answer: B,D 🗳️
Your job uses the MQ connector stage to read messages from an MQ queue. The job should retrieve the message ID into the MessageID field and parse the payload into two fields: Name is to get the first ten characters, Description is to get the remaining characters.
What will accomplish this?
- A. First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; second column is Name as Binary 10; third column is Description as VarBinary 200.
- B. First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; second column is Name; select WSMG.MSPAYLOAD data element; third column is Description; select WSMG.MSPAYLOAD data element.
- C. First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; column is Description as VarBinary 200; third column is Name as Binary 10.
- D. First column is MessageID as Binary 24; second column is Name as Binary 10; select WSMG. MSPAYLOAD data element; third column is Description as VarBinary 200; select WSMG.MSPAYLOAD data element.
Correct Answer: C,D 🗳️
Which Information Server client application must be used to manage project-level roles for DataStage?
- A. Director client
- B. Designer client
- C. WebSphere Information Services Director
- D. Web console for IBM Information Server
Correct Answer: D 🗳️
Which three statements are true about stage variables in a Transformer Stage? (Choose three.)
- A. A stage variable in one Transformer can refer to a stage variable in another Transformer, as long as the second Transformer was processed earlier in the job flow.
- B. Varchar stage variables can be initialized with spaces.
- C. The expression executed for a stage variable can refer to a stage variable which is executed later.
- D. Stage variables can be set to NULL.
- E. Stage variables are refreshed with default values before each new input row is processed.
Correct Answer: B,C,D 🗳️
The given job processes large volumes of data using default partitioning, with sort/partition insertion enabled. Both source Data Sets are partitioned and sorted on the merge key. Assuming that the business logic allows all of the following actions, which design change would improve the performance of this job?
- A. Before each input to the Merge stage, insert a Sort stage with "Don't Group, Previously Grouped" set on the merge key. Specify SAME partitioning on all inputs.
- B. Use the Data Set Management Utility to combine both input Data Sets into a single source Data Set.
- C. Set the "Preserve Partitioning" option on both Data Sets and replace the Merge stage with a Sort Funnel stage.
- D. Set the buffer mode to "no buffer" on the output links of both Data Sets.
Correct Answer: A 🗳️
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