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

1. 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) The type of storage engines that can be used.
C) Table opening time.
D) Time to recover from a crash.
E) Size limits of files.

2. Consider the following: mysql> EXPLAIN SELECT Name FROM Country WHERE Code = 'CAN' *************************** 1. row *************************** id: 1 select_type: SIMPLE table: Country type: const possible_keys: PRIMARY key: PRIMARY key_len: 3 ref: const rows: 1 Extra: Which of the following best describes the meaning of the value of the type column?

A) Several rows may be read from the table.
B) Only one row of all its rows need to be read.
C) The table has exactly one row.

3. Which of the following best describe the effects on performance for the dynamic-row format for
MyISAM has? (Choose two)

A) Retrievals are less complex and are faster.
B) Retrievals are more complex and slower.
C) Rows generally take up less disk space than fixed-row format.
D) Rows generally take up more disk space than fixed-row format.

4. Which of the following best describes the relationship between MAX_ROWS, AVG_ROW_LENGTH and the max table size?

A) MAX_ROWS * AVG_ROW_LENGTH tells MySQL how large you expect the table to grow to.
B) MAX_ROWS + AVG_ROW_LENGTH tells MySQL to not let the table grow past that size.
C) Specifying MAX_ROWS and AVG_ROW_LENGTH will prevent MySQL from growing the table beyond that limit.
D) Specifying MAX_ROWS and AVG_ROW_LENGTH doesn't prevent MySQL from growing the table beyond that limit.

5. Which of the following statements are true regarding the slow query log? (Choose four)

A) The slow query log can be switched on with the log_slow_queries option.
B) You can use the SHOW SLOW QUERIES statement to display all entries in the slow queries log.
C) The slow query log is always enabled.
D) To have the slow query log contain queries that don't utilize any index, the log-queriesnotusingindexes option needs to be set.
E) You can use the mysqldumpslow command line tool to summarize the content of the slow query log.
F) The slow query log will contain queries that take more seconds than configured in the long_query_time option.
G) The slow query log contains queries that don't utilize any index.
H) The slow query log will contain queries that take more than 10 seconds.

Solutions: