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MYSQL MySQL 5.0 Database Administrator Certified Professional Exam, Part I Sample Questions:

1. Which of the following statements are true regarding table locks?

A) They are implicitly released when the connection is closed.
B) They can be released by other connections than the client holding them.
C) They can only be released by the client holding them.
D) They are not released when the connection is closed

2. When working with the InnoDB engine, which of the following correctly defines the READ
UNCOMMITTED isolation level?

A) It allows a transaction to see committed changes made by other transactions.
B) It allows a transaction to only see its uncommitted changes.
C) It allows a transaction to see uncommitted changes made by other transactions.
D) It allows a transaction to see both committed/uncommitted changes made by other transactions.

3. Which of the following are requirements for MyISAM binary portability?

A) Both machines must use IEEE floating-point format or contain no floating-point columns.
B) Both machines must use the same operating system.
C) Database and table names must use lowercase format.
D) Both machines must use two's-complement integer arithmetic.

4. Which of the following describes how deadlocks may occur and how InnoDB resolves them?

A) InnoDB resolves deadlocks by terminating and rolling back both of the deadlocking transactions.
B) Deadlocks happen anytime when more than one lock is placed in a table.
C) Deadlocks happen when two transactions both have locks that the other is waiting for the release of the lock that the other holds.
D) InnoDB resolves deadlocks by terminating and rolling back one of the deadlocking transactions.

5. Which of the following statements are true for InnoDB?

A) Tablespace and log files will be created even if not configured explicitly.
B) Tablespace and log files have to be configured explicitly to be created.
C) InnoDB is enabled by default.
D) InnoDB is not enabled by default.

Solutions: