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IBM C2090-418 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Administration and Security | 15% | - Repository management - Backup and recovery procedures - User roles and security configuration |
| Topic 2: Job Execution and Monitoring | 20% | - Resource management and parallelism - Performance monitoring and tuning - Director client and job logs - Running and scheduling jobs |
| Topic 3: Architecture and Environment | 20% | - Installation and configuration - DataStage/Information Server architecture - Environment variables and configuration files - Project setup and management |
| Topic 4: Job Design and Development | 35% | - Data types and metadata handling - Partitioning, collecting and sorting - Stage usage: sources, transformations, targets - Lookups, references and constraints - Parallel and Server job design |
| Topic 5: Troubleshooting and Best Practices | 10% | - Migration and maintenance - Error handling and debugging - Job optimization and standards |
IBM Websphere Datastage V.8.0 Sample Questions:
A Data Set was created earlier with one partition. A subsequent job using a 2-node configuration file reads from that Data Set passing data to a Transformer stage with "Same" partitioning. Which statement is true?
- A. DataStage will repartition the data and run one instance of the Transformer stage.
- B. Setting the Preserve Partitioning flag to "Clear" will generate two instances of the Transformer stage.
- C. Setting the Preserve Partitioning flag to "Set" will run one instance of the Transformer stage.
- D. The DataStage job will abort.
Correct Answer: B 🗳️
A 100 MB input data set has even distribution across 400 unique key values. When run with a 4-node configuration file, which two changes could improve sort performance for this scenario? (Choose two.)
- A. Alter the Sort stage properties to perform a Stable sort.
- B. Specify "Restrict Memory Usage" to 60 MB on the Sort stage properties.
- C. Set $APT_TSORT_STRESS_BLOCKSIZE to 50 MB.
- D. Specify Round Robin partitioning on the input link to the Sort stage.
Correct Answer: B,C 🗳️
Which two partitioning methods are keyless? (Choose two.)
- A. Entire
- B. Modulus
- C. Hash
- D. Round Robin
Correct Answer: A,D 🗳️
In a job using Sequential File stage to write a sequential file, the ContactName column is nullable, but the "Null field value" property is left unspecified. The ContactName column has a Char(50) data type. What will happen if NULL is written to the ContactName column?
- A. The column will be padded with the character specified by the $APT_STRING_PADCHAR character.
- B. The empty string ("") will be written to the ContactName column.
- C. The job will abort.
- D. The row containing the NULL will be rejected.
Correct Answer: D 🗳️
Click the Exhibit button.
Based on the dump score fragment provided in the exhibit, which two operators were added by the Parallel Framework during runtime to satisfy the Join stage execution requirements? (Choose two.)
- A. Tsort
- B. APT_JoinSubOperatorNC
- C. Buffer
- D. APT_RealFileExportOperator
Correct Answer: A,C 🗳️
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