PASS GUARANTEED AUTHORITATIVE ORACLE - 1Z1-922 - LATEST MYSQL IMPLEMENTATION ASSOCIATE TEST PREPARATION

Pass Guaranteed Authoritative Oracle - 1Z1-922 - Latest MySQL Implementation Associate Test Preparation

Pass Guaranteed Authoritative Oracle - 1Z1-922 - Latest MySQL Implementation Associate Test Preparation

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Oracle MySQL Implementation Associate Sample Questions (Q213-Q218):

NEW QUESTION # 213
What is the main difference between VARCHAR and CHAR datatypes in MySQL?

  • A. CHAR can store longer strings than VARCHAR
  • B. CHAR stores binary data, and VARCHAR stores text
  • C. CHAR is variable-length, and VARCHAR is fixed-length
  • D. CHAR is fixed-length, and VARCHAR is variable-length

Answer: D

Explanation:
CHAR is a fixed-length datatype, meaning that it will always use the specified number of characters, padding shorter values with spaces. VARCHAR is variable-length, meaning that it only uses as much space as needed for the actual data.


NEW QUESTION # 214
What type of queries benefit the most from HeatWave Cluster in MySQL Database Service?

  • A. Backup and restore operations
  • B. OLTP transaction-based queries
  • C. Complex analytical queries
  • D. Simple SELECT queries

Answer: C

Explanation:
HeatWave Cluster is specifically designed to optimize complex analytical queries. It accelerates query performance by executing these queries in memory and in parallel, making it ideal for real-time analytics on large datasets.


NEW QUESTION # 215
What does the InnoDB redo log store in MySQL?

  • A. Binary logs for replication
  • B. Completed transaction history All
  • C. executed SELECT statements
  • D. Uncommitted transaction data

Answer: D

Explanation:
The InnoDB redo log stores uncommitted transaction data to ensure that, in the event of a crash, transactions can be recovered and either committed or rolled back. This is part of ensuring durability in the ACID properties.


NEW QUESTION # 216
In a MySQL InnoDB Cluster, what happens when a node becomes unreachable?

  • A. The remaining nodes continue to operate, and the cluster self-heals when the node recovers
  • B. All write operations are blocked
  • C. The cluster stops all transactions until the node recovers
  • D. The node is automatically demoted to a replica

Answer: A

Explanation:
If a node in a MySQL InnoDB Cluster becomes unreachable, the remaining nodes continue to operate, and the cluster adjusts by removing the failed node from the group. When the node recovers, it rejoins the cluster and synchronizes its data.


NEW QUESTION # 217
Which MySQL backup type requires less storage space and is faster because it backs up only the changed data since the last backup?

  • A. Incremental backup
  • B. Full backup
  • C. Logical backup
  • D. Cold backup

Answer: A

Explanation:
An incremental backup backs up only the data that has changed since the last backup (either full or incremental), reducing storage space and speeding up the backup process, especially for large databases.


NEW QUESTION # 218
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