Which of the following description is wrong about Huawei Cloud DAS data management service?

• A.Huawei Cloud DAS currently only supports the management of MySQL, Microsoft SQL Server, and DDS engines
• B.Huawei Cloud DAS can view the client address currently connected to Huawei Cloud RDS cloud database.
• C.Huawei Cloud DAS can support cross-region access in Huawei Cloud.
• D.Huawei Cloud DAS can manage the self-built MySQL database on Huawei Cloud ECS

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When the customer uses Huawei Cloud SMS to migrate the host, the source host is the key login, and the target is the host created using the password login method. After the migration is completed, you can use the password to log in to the target host.

• A.True
• B.False

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Huawei Cloud Elastic File Service SFS provides on-demand scalable high-performance secondary file storage (NAS), which can be used for multiple elastic cloud-level servers (ECS), encryption devices (CCE&CC), and bare metal servers on the cloud. which of the following are correct? (Multiple choice)

• A.Provide block storage services with high reliability, high performance, rich specifications and scalability.
• B.Cloud servers across multiple availability zones in the same district can access the same file system, enabling multiple cloud servers to access and share files together.
• C.Performance improves with the increase in capacity, while ensuring the high durability of the data, meeting the needs of business growth
• D.Support both NFS and CIFS protocols

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Regarding the description of the relationship between HUAWEI CLOUD MRS service and other HUAWEI CLOUD services, which of the following options are correct? (Multiple choice)

• A.MRS in the Spark, Flume and Loader supported from OBS import data.
• B.MRS cluster metadata, user billing information and other system operating data can be stored in the RDS relational database.
• C.MRS in the Hive, MapReduce, YARN support export data to OBS in
• D.Huawei cloud grade S per cluster - node is an ECS elastic cloud server.

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Which of the following is not a capability of the "Cloud DBA function of a Huawei Cloud RDS instance?"

• A.Emergency database restart
• B.Database engine check
• C.Database hardware tuning
• D.Database deadlock check

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