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

1. Which of the following statements best describe the key buffer? (Choose two)

A) It is set on a per-connection basis.
B) It is a global buffer.
C) It caches index blocks for MyISAM tables only.
D) It caches index blocks for InnoDB tables only.
E) It caches index blocks for all storage engine tables.

2. Which of the following best describes what mysqldumpslow does and how to use it? (Choose two)

A) It dumps the contents of the slow log into a readable format.
B) Shell> mysqldumpslow < log_name
C) It shows a summary of the slow log contents.
D) Shell> mysqldumpslow log_name

3. Which of the following best describes what may limit the number of simultaneous connections to the server? What are possible ways to increase it? (Choose two)

A) The --key_cache option may be used to increase the limit.
B) The maximum number of threads per-process of the operating system.
C) The operating system may be able to be reconfigured to increase this limit.
D) It is limited by the maximum size of the table cache.

4. When working with stored routines, which of the following are true in regards to the effect on the amount of data exchanged between client and server?

A) They have no effect on the amount of data exchanged.
B) They can help reduce the amount of data exchanged.
C) They may increase the amount of data exchanged.

5. Consider the following:
mysql> EXPLAIN SELECT * FROM City WHERE CountryCode = 'USA'
*************************** 1. row ***************************
id: 1
select_type: SIMPLE table: City
type: ALL
possible_keys: NULL
key: NULL
key_len: NULL
ref: NULL
rows: 4079
Extra: Using where
What does the possible_keys column in this output denote?

A) Whether you are using any indexes in your query.
B) Whether there are any indexes on the table(s) you are querying.
C) If there are any indexes you may be able to use.
D) If it is possible for you to include any indexes in your query.

Solutions: