Which of the following functions does Huawei Cloud DRS data replication service provide? (Multiple choice)

In the product architecture of HUAWEI CLOUD Application Operation and Maintenance Management AOM, which of the following data storage can be supported at the storage and transmission layer? (Multiple choice)

Among the configuration item sources of the following microservices, which of the following has the highest priority?
The configuration of CSE is hierarchical, according to the order of priority, it is:
yaml configuration file<environment variable<System Property<configuration center

When users use the HUAWEI CLOUD ELB service, they can use the health check to determine the availability of the back-end elastic cloud server ECS instance.
For Layer 4 services (UDP protocol), which of the following methods is used by an ELB instance to determine the availability of an ECS instance?

HUAWEI CLOUD CES service provides a one-click alarm function. Which of the following descriptions of the one-click alarm strategy and corresponding actions are correct? (Multiple choice)