Alibaba Cloud ACA-Developer Exam With Confidence Using Practice Dumps

Event Notifications can cross regions.

Message Service provides synchronous notifications to ensure the consistency between the message acknowledgment and event processing.

The event notification message is retained within the valid time. When you fail to receive an event message, the event notification message is retried based on the specified retry policy.

The consumer type of the event notification message can be HTTP Server, Queue, or Topic.

Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console

A STS request consists of an access address, communication protocol, request method, request parameters and character encoding

When calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made

The STS service supports the use of both HTTP and HTTPS protocols

For ECS, CloudMonitor supports the collection and reporting of important ECS operating system level events, such as application crashes.

For Object Storage Service (OSS), CloudMonitor supports the collection and reporting of bucket upstream and downstream bandwidth which exceeds the flow control threshold or the user-selected reporting threshold.

For Server Load Balancer (SLB), CloudMonitor supports the collection and reporting of HTTPS certificate expiration events, for certificates installed on SLB.

For E-MapReduce, CloudMonitor supports the collection and reporting of service component status, cluster creation failure, and timeout events.