InfoSphere DataStage v8.5: C2090-421 Exam
"InfoSphere DataStage v8.5", also known as C2090-421 exam, is a IBM Certification. With the complete collection of questions and answers, PrepAwayPDF has assembled to take you through 194 Q&As to your C2090-421 Exam preparation. In the C2090-421 exam resources, you will cover every field and category in IBM Specialist Certification helping to ready you for your successful IBM Certification.
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IBM C2090-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Performance Tuning and Optimization | - Partitioning and parallelism strategies - Parallel job optimization techniques |
| Job Design and Development | - Data flow and job sequencing - Transformations and stages usage - Designing DataStage jobs |
| DataStage Architecture and Concepts | - Parallel processing architecture - InfoSphere DataStage components - Server vs parallel jobs overview |
| Connectivity and Data Sources | - Database connectors and stages - File handling (sequential and complex files) |
| Debugging and Administration | - Job monitoring and troubleshooting - Logging and error handling |
IBM InfoSphere DataStage v8.5 Sample Questions:
A 100MB input dataset has even distribution across 400 unique key values.
When run with a 4-node configuration file, which two changes could improve sort performance in this scenario? (Select two)
- A. Convert all numeric fields to varchars.
- B. Specify "Restrict Memory Usage" to 60MB on the Sort stage properties.
- C. Alter the Sort stage properties to perform a stable sort.
- D. Specify Round Robin partitioning on the input link to the Sort stage.
- E. Set $APT_TSORT_STRESS_BLOCKSIZE to 50M
Correct Answer: B,E 🗳️
What two data sources support direct lookups? (Select two)
- A. ODBC
- B. DB2
- C. SqIServer
- D. Teradata
- E. Oracle
Correct Answer: B,E 🗳️
Click on the Exhibit button.
Which environment variable would provide this information?
- A. APT_SHOW_COMPONENT_CALLS
- B. APT_PM_PLAYER_TIMING
- C. APT_DEBUG_PARTITION
- D. APT_STATUS
Correct Answer: B 🗳️
If you do not alter any of the Format settings, the Sequential File stage will produce a file with what three types of format? (Choose three.)
- A. Rows are delimited by a UNIX newline.
- B. Variable length columns are contained within double quotes.
- C. Rows are delimited by a DOS newline.
- D. All columns are delimited by a comma, except for the final column in a row.
- E. All columns are delimited by a comma.
Correct Answer: A,B,D 🗳️
You are asked to identify the jobs and shared containers that use the ADDRESS column. The Size has changed from 50 to 120 characters in the source system so the jobs must be updated with the new size. What feature of the Designer will locate where a column is used in a DataStage project?
- A. From Designer Tools, open an Advanced Find dialog. Enter the column name in the Name to find field. Select Jobs and Shared Containers from the Type to find list.
- B. Select a Table Definition, then right click and choose Find where column is used. Select the column to search for from the list.
- C. From Designer Tools open an Advanced Find dialog. Select Columns from the Type list and enter the column name in the Name To Find field.
- D. Open the Table Definition properties, Select the ADDRESS column, then right click and select Find where used.
Correct Answer: C 🗳️
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