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A. The price of the auction instance changes in real time with the market supply and demand relationship.

B. It is necessary to set the price upper limit of the elastic cloud server when purchasing an instance.

C. The bid instance will automatically delete the instance after 5 minutes after exceeding the expected purchase price.

D. The performance of the competitive instance sold at a discounted price is lower than that of a normal ECS of the same specification.

A. The business wants to control the ratio of read masters when the read pressure is high and can accept that the data is inconsistent for a short time, configure a custom read strategy.

B. When the business needs strong consistent reading, configure the full read main library strategy.

C. When the business reading pressure is high and the teaching data can be inconsistent for a short time, configure the read load balancing strategy.

D. When the business hopes that reads will not affect the primary instance and cannot accept that the data is inconsistent for a short time, configure a read-only instance balance strategy.

A. The maximum number of Huawei Cloud RDS database read-only instances to be created is 10.

B. Huawei Cloud RDS for MySQL and RDS for MySQL Postgrep SQL both support mounting read-only instances

C. The read-only instance of Huawei Cloud RDS database has an independent connection address.

D. After the read-only instance of Huawei Cloud RDS database is used in conjunction with Huawei Cloud DDM, the weight of the read policy can be set.

A. Web application

B. Service Comb

C. Mobile application

D. Spring Cloud

A. False

B. True

A. By SDK way, the abstract service governance capabilities to the SDK of the system to achieve.

B. Service governance capabilities are unified and realized by ESB.

C. Use the Sidecar model to deploy the components of the application to a separate process or container.

D. The service governance capability is directly embedded in the business code and implemented directly by the code logic.

A. Apply encryption

B. Server-side encryption

C. Client side encryption

A. False

B. True

A. Spot instances are automatically deleted after 5 minutes after exceeding the expected purchase price.

B. The price of the auction instance changes in real time with the market supply and demand relationship.

C. It is necessary to set the price upper limit of the elastic cloud server when purchasing an auction instance.

D. Performance Bidding instance sold at a discounted price than the same size of the normal ECS low.

A. Migrate from the user's local Oracle database to RDS for PostgreSQL.

B. Use VPN network to migrate SQL Server to RDS for MySQL on HUAWEI CLOUD

C. Migrate the sharded cluster MongoDB database to the DDS community edition cluster.

D. Migrate the HUAWEI CLOUD DDS instance to the user's local MongoDB database.

A. Uninterrupted business storage expansion

B. Database-level backup and recovery

C. Resource monitoring

D. Database engine monitoring

A. Operating system upgrade

B. Highly available database

C. SQL optimization

D. Database software installation

A. Rapid development and deployment of web applications

B. Gray release

C. Continuous integration and continuous delivery

D. Microservice development and management

A. Use object storage migration service.

B. Use storage disaster recovery services

C. Configure OBS cross-region replication.

D. Use cloud hard disk backup service.

A. False

B. True