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

1. Which of the following best describes why one should use VARCHAR rather than CHAR in InnoDB? (Choose two)

A) Generally, there will be less disk I/O during processing.
B) The average amount of space used will be less.
C) VARCHAR columns provide better transaction support.
D) The optimizer always performs better with VARCHAR columns over CHAR columns.

2. What is the effect of using WITH GRANT OPTION when executing the following statement?
GRANT SELECT, UPDATE, DELETE ON world.* TO 'joe'@'example.com' IDENTIFIED BY 'Sakila' WITH GRANT OPTION

A) Nothing; WITH GRANT OPTION is not a valid clause in GRANT commands.
B) The account 'joe'@'example.com' becomes an administrator account
C) The account 'joe'@'example.com' may grant any type of privilege on tables in the world database to other users
D) The account 'joe'@'example.com' may grant SELECT, UPDATE and DELETE privileges on tables in the world database to other users

3. Does max_connections have an affect on the number of slaves that may connect to a master?

A) Yes, because each slave is effectively a connected user.
B) No, because slaves are not really clients.
C) No, because slaves do not use the same type of connection as a regular client.
D) Yes, because if the server has too many connections, it may slow the slaves down.

4. Consider the following: ALTER TABLE City ROW_FORMAT = FIXED What would be the effect of this statement?

A) The table City is changed to a fixed row format.
B) Nothing as this is not a valid statement.
C) The columns in the table City are changed from VARCHAR to CHAR.

5. The account 'ulf'@'localhost' has previously been created with the statement
GRANT ALL PRIVILEGES ON *.* TO 'ulf'@'localhost' IDENTIFIED BY 'w01f' This account should no longer be used, so you issue the following command:
REVOKE ALL PRIVILEGES ON *.* FROM 'ulf'@'localhost'
After executing this statement, you inspect the server and find that no clients are connected using that account. However, the next day you notice that the account 'ulf'@'localhost' is indeed connected to the server. Why is it still possible for the account 'ulf'@'localhost' to connect to the server?

A) Specifying GRANT ALL PRIVILEGES ON *.* effectively created an administrator account, which cannot be disabled through the REVOKE statement
B) The REVOKE command was not followed by a FLUSH PRIVILEGES command, so the account was never actually disabled
C) The ON *.* clause should not be specified when disabling an account
D) The REVOKE statement used does not remove the USAGE privilege from the account, allowing new connections with that account.

Solutions: