H13-821_V3.0 · Question #56
Due to the rapid development of business, an Internet company plans to transform its business system into the cloud and migrate some of its business data to the cloud for operation because its…
The correct answer is D. Purchase HUAWEI CLOUD RDS cloud database service and use the active/standby mode. HUAWEI CLOUD RDS in active/standby mode directly satisfies all three stated requirements: it is a fully managed Database-as-a-Service (DBaaS) that supports elastic storage and compute scaling in response to business demand, its active/standby architecture provides built-in high…
Question
Due to the rapid development of business, an Internet company plans to transform its business system into the cloud and migrate some of its business data to the cloud for operation because its current self-built IT resources cannot meet business needs. Customers want to use the database as a business, which needs to meet the following requirements: capacity can be dynamically adjusted according to business changes: meet high availability requirements, performance is significantly improved compared with traditional databases (such as MySQL). Which of the following options can meet the customer's needs?
Options
- APurchase a high-performance elastic cloud server and deploy a database
- BPurchase the HUAWEI CLOUD GaussDB cloud database service and complete the database
- CPurchase bare metal servers and deploy databases
- DPurchase HUAWEI CLOUD RDS cloud database service and use the active/standby mode
How the community answered
(34 responses)- A3% (1)
- B12% (4)
- C3% (1)
- D82% (28)
Explanation
HUAWEI CLOUD RDS in active/standby mode directly satisfies all three stated requirements: it is a fully managed Database-as-a-Service (DBaaS) that supports elastic storage and compute scaling in response to business demand, its active/standby architecture provides built-in high availability with automatic failover, and as a cloud-native managed service it delivers performance advantages over a self-managed MySQL deployment. Option A (elastic cloud server) and Option C (bare metal server) both require you to install and manage the database yourself, meaning you bear full responsibility for scaling, high availability, and tuning - none of which are provided out of the box. Option B (GaussDB) is a distributed, enterprise-grade database oriented toward massive-scale OLAP and hybrid workloads, making it a heavier and more complex choice than what the scenario describes, and it does not map as cleanly to the "active/standby high availability" requirement called out in the question.
Memory tip: When a question lists dynamic scaling, high availability, and better-than-MySQL performance together, look for the managed relational database service (RDS) with a built-in redundancy mode - self-managed servers (cloud VM or bare metal) fail on the "managed HA" requirement, and specialized distributed databases (GaussDB) are designed for a different scale tier.
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