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Oracle Certification
1Z0-922 Exam
Oracle.1Z0-922.v2026-02-27.q133 Dumps

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Question 71

Which MySQL component is responsible for handling transactions and ensuring ACID compliance?

A.Query Optimizer
B.InnoDB Storage Engine
C.MySQL Replication
D.MySQL Buffer Pool

Correct Answer: B

The InnoDB Storage Engine is responsible for handling transactions and ensuring ACID (Atomicity, Consistency, Isolation, Durability) compliance in MySQL. It provides features like row-level locking, transaction isolation levels, and crash recovery, making it the preferred storage engine for transactional workloads.

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Question 72

Which of the following is a feature exclusive to MySQL Enterprise Edition?

A.MySQL Query Optimizer
B.MySQL Enterprise Monitor
C.MySQL Replication
D.MySQL Workbench

Correct Answer: B

MySQL Enterprise Monitor is a key feature available only in MySQL Enterprise Edition. It helps monitor database performance, optimize queries, and identify security risks, providing advanced tools for enterprise-grade database management. The other options are available in both the Community and Enterprise editions.

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Question 73

What tool can be used to monitor query performance and slow queries in MySQL?

A.MySQL Router
B.MySQL Query Optimizer
C.MySQL Slow Query Log
D.MySQL Enterprise Backup

Correct Answer: C

The MySQL Slow Query Log is used to monitor and log queries that take longer than a specified time to execute. It helps identify queries that may be causing performance issues.

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Question 74

Which two parameters in my.cnf affect replication in MySQL?

A.server_id
B.innodb_flush_log_at_trx_commit
C.log_bin
D.innodb_buffer_pool_size

Correct Answer: A,C

server_id uniquely identifies each server in a replication setup, and log_bin enables binary logging, which is crucial for replication as it logs all changes made to the database.

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Question 75

Which MySQL datatype should be used to store true or false values?

A.TINYINT
B.BOOLEAN
C.VARCHAR
D.ENUM

Correct Answer: B

The BOOLEAN datatype is used to store true or false values in MySQL. Internally, it is stored as a TINYINT, with 0 representing false and 1 representing true.

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