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Oracle 1z0-915-1 Quizfragen Und Antworten & 1z0-915-1 Zertifizierungsfragen
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Oracle 1z0-915-1 Prüfungsplan:
Thema
Einzelheiten
Thema 1
- MySQL HeatWave Service: For database administrators, cloud architects, and DevOps engineers, this section of the exam covers identifying key features and benefits, describing MySQL HeatWave architecture, defining MySQL HeatWave terminology, and identifying MySQL HeatWave limitations.
Thema 2
- MySQL HeatWave Configurations: For database administrators and performance tuning specialists, this part of the exam covers creating custom configurations, comparing configurations, describing the effects of changing dynamic and non-dynamic variables, and updating a DB system configuration.
Thema 3
- Backing up and restoring DB systems: For database administrators and disaster recovery specialists, this section of the exam covers backing up and restoring a DB system, managing automatic backups, and performing point-in-time recovery.
Thema 4
- HeatWave Cluster: For database performance specialists and cloud architects, this section of the exam covers
Thema 5
- Read Replicas: For database architects and replication specialists, this domain of the exam covers creating and managing read replicas, describing the read replica load balancer, connecting to a read replica, etc.
Thema 6
- High Availability: For system reliability engineers and database architects, this domain of the exam covers how to enable and disable the high availability of a DB system, explain placement considerations for a high availability DB system, distinguish between switchover and failover, etc.
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1z0-915-1 Zertifizierungsfragen, 1z0-915-1 Buch
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Oracle MySQL HeatWave Implementation Associate Rel 1 1z0-915-1 Prüfungsfragen mit Lösungen (Q66-Q71):
66. Frage
You want to restore a stand-alone DB system to a high-availability DB system with a point-in-time recovery.
Which three are required? (Choose three.)
- A. The stand-alone DB system must remain active during the restore.
- B. An automatic backup taken before the selected point in time must be available.
- C. A manual backup taken before the selected point in time must be available.
- D. Every user table must have a primary key.
- E. Point-in-time recovery must be enabled before the point in time to which you want to restore.
Antwort: B,C,E
67. Frage
Which three must be provided when creating a channel? (Choose three.)
- A. Source connection SSL mode
- B. Source connection password
- C. Target DB system
- D. Channel name
- E. Replication delay
Antwort: A,B,D
Begründung:
When creating a channel for replication in MySQL, the following must be provided:
* Channel name(Answer A): The unique identifier for the replication channel.
* Source connection SSL mode(Answer B): Specifies the SSL mode for the connection to the source server.
* Source connection password(Answer D): The password for the source server connection.
Steps:
* UseCHANGE MASTER TOcommand to set up the replication channel.
* Provide the channel name, SSL mode, and connection password as part of the configuration.
References:
* MySQL Replication Documentation
* Setting Up Replication Channels
68. Frage
Which type of configuration variables CANNOT be modified in MySQL custom configurations?
- A. Initialization variables
- B. Default user variables
- C. User variables
- D. System variables
Antwort: A
Begründung:
Initialization variables(Answer A) cannot be modified in MySQL custom configurations. These variables are set at the start of the MySQL service and are not changeable without restarting the service.
* Initialization variables are parameters that define how the MySQL server initializes.
* Changes to these variables require restarting the MySQL server to take effect.
* Examples include variables likeinnodb_buffer_pool_size, which determine memory allocation settings on startup.
References:
* MySQL Configuration Variables Documentation
69. Frage
What must you do to minimize a DB system down time caused by automatic maintenance operations?
- A. Enable high availability.
- B. Create read replicas.
- C. Enable crash recovery.
- D. Add HeatWave cluster.
Antwort: A
Begründung:
To minimize DB system downtime caused by automatic maintenance operations, you should enable high availability. High availability ensures that there are multiple instances of your database running in different fault domains or availability domains, reducing the impact of maintenance on the system's availability.
70. Frage
You create a new MySQL DB system. It fails because you use mysql.sys as the administrator username.
What is the reason?
- A. The username must have at least 10 characters.
- B. mysql.sys is a reserved username that cannot be used in customer-defined user accounts.
- C. The username cannot contain non-alphanumeric characters, such as a period.
- D. The username can contain only uppercase characters.
Antwort: B
Begründung:
The MySQL usermysql.sysis a reserved username used by the system for internal purposes. It cannot be used as a customer-defined user account to prevent conflicts with the system operations and maintain the integrity of the database's internal workings.
71. Frage
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