Oracle MySQL 2021 Implementation Essentials : 1Z0-921

  • Exam Code: 1Z0-921
  • Exam Name: MySQL 2021 Implementation Essentials
  • Updated: Oct 03, 2026     Q & A: 78 Questions and Answers

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Oracle 1Z0-921 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: High Availability and Replication10%- InnoDB Cluster deployment
- Replication concepts and setup
- High availability solutions overview
- GTID-based replication
Topic 2: MySQL Security20%- Data Masking and De-identification
- Authorization and privilege management
- Password policies and authentication
- Transparent Data Encryption (TDE)
- MySQL Enterprise Audit
- MySQL Enterprise Firewall
Topic 3: Backup and Recovery10%- Install and configure backup
- Backup encryption and compression
- MySQL Enterprise Backup overview
- Data import/export with MySQL Workbench
Topic 4: MySQL Database Service and HeatWave10%- High availability configuration
- HeatWave setup and usage
- Service overview and provisioning
- Monitoring and management
Topic 5: MySQL Enterprise Monitor10%- Architecture: Service Manager and Agents
- Query Analyzer usage
- Custom Advisors configuration
- Features and benefits
Topic 6: Database Design15%- MySQL Document Store
- Basic SQL queries
- Indexes, constraints and joins
- Create and manage databases and tables
- MySQL data types
- Table partitioning
Topic 7: Installation and Architecture15%- Install MySQL Enterprise Server
- Configure MySQL Enterprise Server settings
- MySQL infrastructure architecture overview
Topic 8: Oracle MySQL Enterprise Product Suite10%- Oracle products certified to work with MySQL Enterprise Edition
- Differences between MySQL Enterprise Edition, Community Edition and Standard Edition
- Products and features of MySQL Enterprise Edition

Oracle MySQL 2021 Implementation Essentials Sample Questions:

Question #1

You set up a compressed full backup file from mysqlbackup by using the --compress option for MySQL Database backup. You are required to restore the database and apply the log.
Which two options should you add to the mysqlbackup to achieve the restoration of the database?

  • A. --copy-back-and-apply-log
  • B. --apply-log-and-copy-back
  • C. --uncompress-and-apply-log
  • D. --decompress
  • E. --uncompress
Reveal Solution  Discussion  0

Correct Answer: A,E  🗳️

Question #2

Consider this SQL statement which is using the innoDB storage engine and with global AUTOCOMMIT = 1:

What is the result after issuing the rollback command?

  • A. Both the tables, t1 and t2, are created.
  • B. Only the t2 table is created.
  • C. Only the t1 table is created.
  • D. Both the tables, t1 and t2, are not created because there is an explicit ROLLBACK.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #3

What are the two main components required to set up persistent storage for MySQL on Kubernetes?
Response:

  • A. Secret and Deployment
  • B. PVC (Persistent Volume Claim) and ConfigMap
  • C. PVC (Persistent Volume Claim) and PV (Persistent Volume)
  • D. Pod and ReplicaSet
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #4

You execute this statement:
SELECT NULL=NULL;
What is the result?

  • A. FALSE
  • B. NULL
  • C. 0
  • D. TRUE
  • E. 1
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #5

You establish MySQL Enterprise Server on Oracle Cloud Infrastructure connection via Secure Shell (SSH) For accessing a new MySQL Enterprise Edition on an Oracle Cloud Infrastructure (OCI) Instance you " Add SSH key " information during the OCI instance setup. You want to use Putty from your Windows Client to install MySQL.
What are the correct steps to accomplish this?

  • A. Convert the private key to ppk format first and use the new private key for authentication.
  • B. Use the provided private key for authentication.
  • C. Open Port 22 on your OCI Instance and configure Putty with the ssh private key.
  • D. Open Port 22 on your OCI Instance and convert the private key to ppk format. This new private key can be used for authentication.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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