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MYSQL 1Z0-874 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Backup and Recovery | - Recovery procedures
|
| MySQL Architecture and Administration | - User management and security
|
| Performance Tuning and Optimization | - Query optimization
|
| Replication and High Availability | - Failover and scaling
|
MYSQL MySQL 5.0 Database Administrator Certified Professional Exam, Part II Sample Questions:
1. It is important to analyze queries that involve joins with EXPLAIN because...
A) Using EXPLAIN before executing the query helps the server prepare the statements used.
B) Joins have the potential to cause more server processing if not defined correctly.
C) Joins are more prone to mistakes.
2. Consider the following: mysql> EXPLAIN SELECT DISTINCT City.id,City.name -> FROM City,Country -> WHERE Country.Name IN ('United States','Canada','Mexico') -> AND City.CountryCode=Country.Code -> ORDER BY name *************************** 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 temporary; Using filesort *************************** 2. row *************************** id: 1 select_type: SIMPLE table: Country type: eq_ref possible_keys: PRIMARY key: PRIMARY
key_len: 3
ref: world.City.CountryCode
rows: 1
Extra: Using where;
Distinct
Which of the following best describes the meaning of the values in the ref columns?
A) No index columns are used to choose rows from Country and the City.CountryCode column is used to reference rows in the City table.
B) City.CountryCode is used to sort what rows are returned from the City table.
C) No indexed columns are used to choose rows from City and the City.CountryCode column is used to reference rows in the Country table.
3. Why is --bind-address an important security option?
A) Mysqld will turn off networking and will only accept local connections
B) Mysqld will only accept connections from the given address.
C) Mysqld won't accept any connections at all.
D) On a server with multiple network interfaces, you can have mysqld accept connections only on the given interface.
4. In order to create an account where no username is needed for login, ...
A) The account should be created with the username "%"
B) The account should be created with the username "anon"
C) None of the above
D) Accounts cannot be specified in a way such that no username is required
E) The account should be created with a username consisting of the empty string
5. What kind of replication is supported by the MySQL server?
A) Multiple-master replication
B) Master to slave replication
C) Single file based clustering
D) MySQL doesn't support replication
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: D | Question # 4 Answer: E | Question # 5 Answer: B |

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