Free C2090-600: IBM DB2 11.1 DBA for LUW Exam Questions and Answers
IBM DB2 11.1 DBA for LUW is exam C2090-600, part of the IBM Professional Certification Program. IBM exams you book carry a C1000- code, with S2000- used for specialty credentials, and the three digits are a sequential counter across the whole portfolio rather than a product family — a higher number simply means newer. C2090- and C2010- are the legacy series and are all but extinct.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: September 16, 2026
- Exam code
- C2090-600
- Provider
- IBM
- Questions in our bank
- 1000+
- Free to read
- First 10, with answers
- Official page
- Official Exam website
- Our test mode duration & pass mark
- 130 mins · 70%
Recommended: Switch to Test Mode to start a practice test that simulates the real exam experience.
Question #1
When implementing a full outer join, which of the following is a key characteristic?
Please select an optionIncorrectCorrect answer: C
A full outer join returns all records from both tables, matched and non-matched.
Was this answer correct?Question #2
Which isolation level prevents dirty reads?
Please select an optionIncorrectCorrect answer: D
The Serializable isolation level prevents dirty reads by ensuring that transactions are isolated from each other completely.
Was this answer correct?Question #3
What is a primary key in a DB2 table?
Please select an optionIncorrectCorrect answer: A
A primary key is a unique identifier for each record in a table, ensuring no duplicates are present within that column.
Was this answer correct?Question #4
What type of index improves search performance in DB2?
Please select an optionIncorrectCorrect answer: D
A Regular Index helps improve search performance by allowing faster retrieval of rows based on indexed columns.
Was this answer correct?Question #5
Which of the following is a characteristic of the DB2 buffer pool?
Please select an optionIncorrectCorrect answer: B
A buffer pool in DB2 caches frequently accessed data to improve performance by reducing disk I/O operations.
Was this answer correct?Question #6
In which scenario would you use a stored procedure?
Please select an optionIncorrectCorrect answer: D
A stored procedure is used to encapsulate complex logic for processing in the database, often improving performance and maintainability.
Was this answer correct?Question #7
What is the maximum length of a VARCHAR column in DB2?
Please select an optionIncorrectCorrect answer: A
The maximum length of a VARCHAR column in DB2 can be up to 32,767 characters.
Was this answer correct?Question #8
When establishing a relationship, what is a cascading delete?
Please select an optionIncorrectCorrect answer: B
A cascading delete automatically deletes related records in a child table when the corresponding record in the parent table is deleted.
Was this answer correct?Question #9
In a DB2 environment, what is the role of a transaction log?
Please select an optionIncorrectCorrect answer: A
The transaction log in DB2 tracks changes that are made to the database, providing a way to recover and maintain consistency.
Was this answer correct?Question #10
What does a clustered index do in DB2?
Please select an optionIncorrectCorrect answer: B
A clustered index organizes the data rows in the table based on the index keys which is beneficial for range queries.
Was this answer correct?
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FAQ
Learn More: https://www.ibm.com/training/credentials
- Q1: What is the C2090-600: IBM DB2 11.1 DBA for LUW exam?
- A: C2090-600: IBM DB2 11.1 DBA for LUW is a IBM certification exam. Judging by the questions in our bank, it concentrates on index, lock, join, schema and table.
- Q2: What topics does the C2090-600: IBM DB2 11.1 DBA for LUW exam cover?
- A: Questions in our C2090-600: IBM DB2 11.1 DBA for LUW bank cluster around index, lock, join, schema, table, normalization, column and stored. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for C2090-600: IBM DB2 11.1 DBA for LUW?
- A: Work through the C2090-600: IBM DB2 11.1 DBA for LUW practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real C2090-600: IBM DB2 11.1 DBA for LUW exam questions?
- A: They are drawn from officially released past questions and from community members who have sat C2090-600: IBM DB2 11.1 DBA for LUW. Answers are verified and updated weekly.
- Q5: Where do I register for the C2090-600: IBM DB2 11.1 DBA for LUW exam?
- A: Register through IBM directly at https://www.ibm.com/training/credentials. Exampractice is not affiliated with IBM and does not administer the exam.
- Q6: Is there a free C2090-600: IBM DB2 11.1 DBA for LUW sample?
- A: Yes. Every C2090-600: IBM DB2 11.1 DBA for LUW page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
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