IBM C2090-421 Questions & Answers - in .pdf
- Total Q&A: 194
- Update: Jun 01, 2026
- Price: $59.99
- Vendor: IBM
- Exam Code: C2090-421
- Exam Name: InfoSphere DataStage v8.5
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IBM C2090-421 Q&A - Testing Engine
- Total Q&A: 194
- Update: Jun 01, 2026
- Price: $59.99
- Vendor: IBM
- Exam Code: C2090-421
- Exam Name: InfoSphere DataStage v8.5
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IBM InfoSphere DataStage v8.5 Sample Questions:
1. Which three actions can improve sort performance in a DataStage job? (Choose three.)
A) Specify only the key columns which are necessary.
B) Minimize the number of sorts used within a job flow.
C) Run the job sequentially so that only one sort process is invoked.
D) Adjust the "Restrict Memory Usage" option in the Sort stage.
E) Use the stable-sort option to avoid the random ordering of non-key data.
2. To better understand the data flowing through a job, it is desirable to have structural information about the datasets captured in the job log. Which environment variable can provide this information?
A) $OSH_STDOUT_MSG
B) $OSH_PRINT_SCHEMAS
C) $APT_NO_PART_INSERTION
D) $APT_PM_PLAYER_MEMORY
3. When creating a Wrapper stage, which three tasks need to be done? (Select three)
A) Specify the command to be executed by the Wrapper.
B) Create Table Definitions that define the Wrapper's input and output columns.
C) Specify whether input rows are to be processed automatically or manually.
D) Specify how Wrapper property values are to be converted.
E) Code and compile the C/C++ Wrapper source code.
4. Which three parallel job stages allow you to use partial schemas? (Select three)
A) External Source stage
B) Peek stage
C) Column Import stage
D) Sequential File stage
E) Dataset stage
5. Which two steps are required to change from a normal lookup to a sparse lookup in an ODBC Enterprise stage? (Choose two.)
A) Sort the data on the reference link.
B) Replace columns at the beginning of a SELECT statement with a wildcard asterisk (*).
C) Change the lookup option in the stage properties to "Sparse".
D) Establish a relationship between the key field column in the source stage with the database table field.
Solutions:
Question # 1
Answer: A,B,D | Question # 2
Answer: B | Question # 3
Answer: A,B,D | Question # 4
Answer: A,C,D | Question # 5
Answer: C,D |
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