Last Updated: Jul 28, 2026
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Securing the MySQL Server | 10% | - Network security and encryption - Restricting file and system access - Security configuration options |
| Topic 2: Interpreting Error Messages and Logs | 5% | - Error codes and messages - General, binary, and error logs |
| Topic 3: Optimizing Queries | 15% | - Index design and usage - Using EXPLAIN to analyze execution plans - Slow query log analysis - Query rewriting and optimization |
| Topic 4: Optimizing the Server Configuration | 10% | - Thread and connection management - Storage engine tuning - Memory and buffer settings |
| Topic 5: Scaling MySQL | 10% | - High availability concepts - Replication setup and management - Read/write splitting |
| Topic 6: Optimizing Schemas and Data Types | 15% | - Choosing appropriate data types - Table design and partitioning - Normalization and denormalization |
| Topic 7: User Management and Access Control | 20% | - Granting and revoking privileges - Creating and managing user accounts - Grant tables structure and maintenance |
| Topic 8: Upgrade-Related Security Issues | 5% | - Post-upgrade security checks - Security changes between versions |
| Topic 9: Optimizing the Operating System Environment | 5% | - OS resource limits and tuning - File system and disk I/O |
| Topic 10: Stored Routines | 5% | - Triggers and events - Stored procedures and functions - Security and execution context |
1. When working with replication, why might you want to stop the SQL thread on the slave while keeping the I/O thread running? (Choose two)
A) So that events for the slave do not get backlogged on the master.
B) So that no changes are made while making backups.
C) So that remaining events can be processed while not receiving new events from the master.
2. How can the strict SQL mode provide added security? (Choose three)
A) By rejecting actions that do not have values for columns without a default.
B) By restricting out of range values.
C) By limiting the operations that the server can perform.
D) By restricting incorrect data types.
3. In which ways can you set the query_cache_type option? (Choose three)
A) You can set it in the configuration file and restart the server.
B) You can set it at runtime for the entire server with the following statement: SET GLOBAL query_cache_type=[0|1|2]
C) You can set it at runtime for the current connection with the following statement: SET SESSION query_cache_type=[0|1|2]
4. Which of the following best describes why InnoDB tables should always have primary keys and why they should be short?
A) Because InnoDB uses primary keys to locate tables, and shorter keys make quicker lookups.
B) Because InnoDB uses primary keys to locate table rows, and shorter keys make quicker lookups.
C) Because InnoDB stores pointers in a log to all the primary keys and shorter keys make this log smaller.
5. Which of the following best describes the purpose of the max_allowed_packet parmeter, and when it is set? (Choose two)
A) The max_allowed_packet parameter is used to control the buffer that is used for communication between the server and the client.
B) The max_allowed_packet parameter is used to control the size of the dataset that is sent to the client.
C) The max_allowed_packet parameter is global and is only set by shutting down the server.
D) The max_allowed_packet parameter is set per-connection.
Solutions:
| Question # 1 Answer: A,C | Question # 2 Answer: A,B,D | Question # 3 Answer: A,B,C | Question # 4 Answer: B | Question # 5 Answer: A,D |
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