Exam Name: InfoSphere DataStage v8.5
Certification Provider: IBM
Corresponding Certification: IBM Specialist
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IBM C2090-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Job Design and Development | - Job types
|
| Topic 2: Data Transformation and Processing | - Aggregation and sorting
|
| Topic 3: Debugging and Troubleshooting | - Job monitoring
|
| Topic 4: InfoSphere DataStage Architecture | - Parallel processing architecture
|
| Topic 5: Performance Tuning and Optimization | - Parallel job optimization
|
| Topic 6: Job Control and Sequences | - Sequence jobs
|
IBM InfoSphere DataStage v8.5 Sample Questions:
Refer to the exhibit.
You are responsible for improving performance for a given job. From reviewing the job dump score, you notice that many tsort operators are inserted. Join_1 is on columns "account", "po_date" and "hdr_number". Join_2 is based on "account", "hdr_number", "paid_date".
Which two actions will help you improve the performance without changing the business logic?
(Select two)
- A. Partition on account and hdrnumber for all joins. Change Join_1 to join on "account", "hdrnumber" and "po_date". Insert Sort between Join_1 and Join_2 and subsort ("Don't sort previously sorted") on "account" and "hdr_number" and sort on "paid_date".
- B. Partition on account and hdr_numberfor all joins. Change Join_1 to join on "account", "hdr_number" and "po_date". Insert Sort between Join_1 and Join_2 and subsort ("Don't sort previously sorted") on "account".
- C. Partition on "account" and "hdr_number" for all joins. Change Join_1 to join on "account", "hdr_number" and "po_date". Add Add $APT_SORTJNSERTION_CHECK_ONLY to job parameter list and set it to "True".
- D. Insert sort stage between Join_1 and Join_2, subsort ("Don't sort, previously sorted") on "account", sort "hdr_number" and "paid_date".
Correct Answer: A,C 🗳️
What three types of links are supported by the Lookup Stage? (Select three)
- A. Multiple reject links
- B. A single input link
- C. A reference link
- D. A single output link
- E. Multiple Input Links
Correct Answer: B,C,D 🗳️
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
In a Transformer, which two of the following mappings can be handled by default type conversions. (Select two)
- A. Integer input column mapped to string output column.
- B. Date input column mapped to a string output column.
- C. String input column mapped to integer output column.
- D. String input column mapped to a data output column.
- E. Integer input column mapped to raw output column.
Correct Answer: A,D 🗳️
You are connected to a domain and must configure it for Source Code Integration.
What are the two things that must be done to associate your DataStage repository with a source control system? (Select two)
- A. From Designer Client choose Team Share Project.
- B. Create a source code control project with the same name as the domain. Choose Integrate Source Control.
- C. From Information Server Manager choose Team Share Project.
- D. From Information Server Manager choose Team Import.
Correct Answer: B,D 🗳️
You set environment variable $APT_ORACLE_LOAD_OPTIONS=PTIONS(DIRECT=TRUE, PARALLEL=TRUE)?for loading index organized tables.You set environment variable $APT_ORACLE_LOAD_OPTIONS=?PTIONS(DIRECT=TRUE, PARALLEL=TRUE)?for loading index organized tables. Which statement is accurate regarding the resulting effect of this environment variable setting?
- A. The Oracle load will run in parallel using simple direct path mode.
- B. Oracle load will run in parallel and bypass DataStage Director.
- C. Oracle load will fail when executed.
- D. The Oracle database stage will run in parallel using conventional path mode.
Correct Answer: C 🗳️
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