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

1. Consider the following two partial outputs of the SHOW VARIABLES command on a master and slave server: Master:
+--------------------------+---------------------------+
| Variable_name | Value |
+--------------------------+---------------------------+
| connect_timeout | 5 |
| log_bin | ON |
| max_connections
| 100 |
| shared_memory_base_name | MYSQL |
| server_id | 2 |
| tmp_table_size | 5242880 |
| version | 5.0.13-rc-nt |
Slave:
+--------------------------+---------------------------+
| Variable_name | Value |
---------------------------+---------------------------+
| connect_timeout | 5 |
| log_bin | ON |
| max_connections | 10 |
| shared_memory_base_name | MYSQL |
| server_id | 2 |
| tmp_table_size | 4266336 |
| version | 5.0.16-rc-nt |
There is apparently a problem with the slave replicating from the master. Which of the following best describes the most likely problem?

A) The version of the slave is newer than the version of the master.
B) The max_connections variable needs to be increased.
C) The connect_timeout variable needs to be increased.
D) The server_id is not unique.

2. What benefits do you get after compressing a MyISAM table? (Choose two)

A) Retrieving rows usually becomes faster.
B) The files on disk consume less space.
C) Using COUNT(*) is faster since the number of rows is constant.
D) The index information will be kept fully in memory, which results in faster performance when using WHERE clauses.

3. Which of the following best describe the purpose of the long_query_time variable?

A) It is used to see the time it took the last longest query to run.
B) It is used to tell the server after how many seconds to abort a query.
C) It is used to tell the server the total CPU seconds that are allotted to a client connection before it shut down.
D) It is used to tell the server when to log a query as slow.

4. With replication, what on the master is used to send commands to the slave?

A) The SQL Thread.
B) The relay log.
C) The binary log.

5. The type of file system you chose may affect MySQL use and/or performance with regard to... (Choose three)

A) The number of users MySQL can handle.
B) Time to recover from a crash.
C) The type of storage engines that can be used.
D) Size limits of files.
E) Table opening time.

Solutions: