Easy To Download Oracle 1Z0-922 Exam Dumps Updated 360 Questions
New Updated 1Z0-922 Exam Questions 2026
NEW QUESTION # 192
What is the primary purpose of MySQL Enterprise Authentication?
- A. To log all SQL queries for analysis
- B. To improve query performance with advanced caching
- C. To integrate MySQL with external authentication systems such as LDAP or Active Directory
- D. To provide replication services for MySQL databases
Answer: C
Explanation:
MySQL Enterprise Authentication allows integration with external authentication systems like LDAP, Kerberos, or Active Directory. This feature helps centralize user authentication, enhancing security and simplifying user management.
NEW QUESTION # 193
Which MySQL replication topology is best suited for geographically distributed databases?
- A. Group replication
- B. Circular replication
- C. Multi-source replication
- D. Primary-replica replication
Answer: C
Explanation:
Multi-source replication allows a single replica to receive updates from multiple primary servers, which can be located in different geographic regions. This topology is useful for geographically distributed databases.
NEW QUESTION # 194
What is the primary difference between HeatWave and standard MySQL query execution?
- A. HeatWave provides backup and recovery features
- B. HeatWave handles transactional queries with higher consistency
- C. HeatWave executes analytical queries in memory for faster results
- D. HeatWave caches all queries in memory
Answer: C
Explanation:
The primary difference is that HeatWave executes analytical queries in memory, allowing for significantly faster processing compared to standard MySQL, which relies on disk-based query execution.
NEW QUESTION # 195
Which backup type allows point-in-time recovery in MySQL?
- A. Incremental backup
- B. Binary log backup
- C. Physical backup
- D. Full backup
Answer: B
Explanation:
Binary log backups allow for point-in-time recovery. By restoring from a full backup and then applying the changes recorded in the binary logs, you can restore the database to a specific point in time.
NEW QUESTION # 196
Which storage engine is optimized for read-heavy workloads and does not support transactions?
- A. MyISAM
- B. CSV
- C. InnoDB
- D. NDB
Answer: A
Explanation:
MyISAM is optimized for read-heavy workloads and is a good choice for applications that do not require transactions. However, it lacks support for features like transactions and foreign keys.
NEW QUESTION # 197
Which of the following processes is responsible for handling incoming connections and query execution in MySQL?
- A. The Storage Engine
- B. The MySQL Server
- C. The Query Optimizer
- D. The InnoDB Buffer Pool
Answer: B
Explanation:
The MySQL Server handles incoming client connections and manages query execution. It coordinates with various storage engines like InnoDB to store and retrieve data.
NEW QUESTION # 198
Which of the following will remove all privileges for a MySQL user?
- A. DELETE FROM mysql.user WHERE User='user' AND Host='host';
- B. REVOKE ALL ON *.* FROM 'user'@'host';
- C. DROP USER 'user'@'host';
- D. GRANT ALL ON *.* TO 'user'@'host';
Answer: B
Explanation:
The REVOKE ALL ON *.* command removes all privileges for the specified user on all databases and tables.
NEW QUESTION # 199
Which MySQL replication mode is most vulnerable to data loss in the event of a primary server crash?
- A. Multi-source replication
- B. Asynchronous replication
- C. Semi-synchronous replication
- D. Synchronous replication
Answer: B
Explanation:
Asynchronous replication is most vulnerable to data loss because the primary server does not wait for the replicas to confirm that they have applied changes. If the primary server crashes, there may be unreplicated transactions.
NEW QUESTION # 200
Which two tables in the mysql system database store global and database-level privileges for users?
- A. columns_priv
- B. tables_priv
- C. db
- D. user
Answer: C,D
Explanation:
The user table in the mysql system database stores global privileges for each user. The db table stores database-level privileges, controlling access to specific databases. The tables_priv and columns_priv tables are used for table-level and column-level privileges, respectively.
NEW QUESTION # 201
What key advantage does MySQL Enterprise Edition offer over the Community Edition?
- A. No need for a license
- B. Faster query processing
- C. Completely free for commercial use
- D. Advanced security features like encryption
Answer: D
Explanation:
MySQL Enterprise Edition offers advanced security features such as data encryption, audit logging, and a firewall. These features help ensure compliance with industry regulations and protect sensitive data, which are not available in the Community Edition. The Community Edition is also free but lacks these advanced tools.
NEW QUESTION # 202
What makes HeatWave particularly suitable for real-time analytics?
- A. It stores query results on disk for future use
- B. It optimizes transactional queries for consistency
- C. It executes queries directly in memory, avoiding disk I/O
- D. It reduces the size of the binary logs
Answer: C
Explanation:
HeatWave is suitable for real-time analytics because it processes queries in-memory, which eliminates the need for disk I/O, significantly reducing query execution time for large datasets.
NEW QUESTION # 203
How does MySQL handle database transactions with the InnoDB storage engine?
- A. By storing transactions in the binary log
- B. Through table-level locking
- C. Using the two-phase commit protocol
- D. Using row-level locking and ACID properties
Answer: D
Explanation:
InnoDB supports transactions using row-level locking, ensuring ACID properties (Atomicity, Consistency, Isolation, Durability) for reliable database transactions.
NEW QUESTION # 204
Which two statements are used to grant privileges to MySQL users?
- A. REVOKE
- B. GRANT
- C. ALTER USER
- D. CREATE USER
Answer: B,C
Explanation:
The GRANT statement is used to assign privileges to a MySQL user. The ALTER USER statement can also be used to adjust user accounts, but it doesn't directly grant privileges like GRANT does.
NEW QUESTION # 205
Which feature allows MySQL Enterprise Authentication to enforce password policies?
- A. Password expiration and history
- B. Query optimization
- C. Data encryption
- D. Transactional replication
Answer: A
Explanation:
MySQL Enterprise Authentication supports password policies, including enforcing password complexity, expiration, and history, which improves security by ensuring strong authentication credentials.
NEW QUESTION # 206
Which of the following is a core requirement for setting up a MySQL InnoDB Cluster?
- A. Only one node can act as a primary
- B. Query caching must be turned off
- C. Full-text indexing must be active
- D. Binary log and GTID must be enabled
Answer: D
Explanation:
A core requirement for setting up a MySQL InnoDB Cluster is that binary logs and Global Transaction Identifiers (GTIDs) must be enabled. These are necessary for tracking and applying transactions consistently across all nodes in the cluster.
NEW QUESTION # 207
What is the purpose of vectorized query processing in the HeatWave Cluster?
- A. To handle failover for analytic queries
- B. To optimize OLTP queries
- C. To process multiple rows of data simultaneously for faster execution
- D. To compress data during storage
Answer: C
Explanation:
Vectorized query processing in the HeatWave Cluster processes multiple rows of data simultaneously using CPU vector instructions. This allows for faster execution of large-scale analytical queries by minimizing the overhead associated with row-by-row processing.
NEW QUESTION # 208
Which two benefits are provided by MySQL InnoDB Cluster in terms of high availability?
- A. Single-point-of-failure protection
- B. Consistent backups
- C. Automatic failover in case of node failure
- D. Zero-downtime maintenance
Answer: C,D
Explanation:
MySQL InnoDB Cluster provides automatic failover, ensuring that the cluster remains available if a node fails. It also allows for zero-downtime maintenance, as nodes can be added or removed without affecting the overall availability.
NEW QUESTION # 209
Which MySQL Enterprise Edition tool is used to monitor and track the performance of MySQL databases?
- A. Enterprise Firewall MySQL Role-
- B. Enterprise Monitor MySQL
- C. MySQL Enterprise Backup MySQL
- D. Based Access Control
Answer: B
Explanation:
MySQL Enterprise Monitor helps database administrators monitor the health, performance, and availability of MySQL databases through real-time alerts and graphical reports.
NEW QUESTION # 210
How does MySQL InnoDB Cluster ensure data consistency across all nodes?
- A. By optimizing query execution times
- B. By using Group Replication with quorum-based voting
- C. By using statement-based replication
- D. By performing asynchronous replication
Answer: B
Explanation:
MySQL InnoDB Cluster ensures data consistency through Group Replication with quorum-based voting, where the majority of nodes must agree on a transaction before it is committed. This prevents conflicting data and maintains consistency across the cluster.
NEW QUESTION # 211
Which two metrics are critical for monitoring InnoDB buffer pool performance in MySQL?
- A. Buffer pool hit rate
- B. Query cache hit rate
- C. Buffer pool reads
- D. Binary log size
Answer: A,C
Explanation:
Monitoring InnoDB buffer pool performance requires tracking the buffer pool hit rate (which measures how often data is retrieved from the buffer pool) and buffer pool reads (which shows how often data must be read from disk instead of memory).
NEW QUESTION # 212
Which of the following is a key benefit of MySQL Group Replication?
- A. It uses binary logs for faster backups
- B. It allows multi-source replication
- C. It provides automatic failover and high availability
- D. It requires no configuration changes
Answer: C
Explanation:
MySQL Group Replication provides high availability by enabling automatic failover. If a primary node fails, another node in the group can take over without manual intervention.
NEW QUESTION # 213
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