Alibaba Cloud ACA-Developer Exam With Confidence Using Practice Dumps

Custom Events are used for collection of continuous event type data, queries, and alarms.

Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms.

Custom Monitoring is used for periodic and continuous collection of time series monitoring data, queries, and alarms.

Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts.

Object ACL is an object-level (not bucket level) permission control mechanism. There are currently three levels of access rights: private, public-read, and public-read-write.

"Private" indicates that an object is a private resource, that is, only the owner of the object has read and write permissions on the object, and other users can read but have no permission to modify or delete the object.

If the permissions of an object are not set, the permissions of the object are inherited from the bucket.

You can set the ACL associated with an object by examining the X-OSS-Object-ACL header in the HEAD request, when making the PutObjectACL API call.

Add an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.

Applies indices to fields that contain many records.

table should not contain more than 6 indexed fields.

Apply indexing to fields of fixed length (preferably not long fields).

Adhere to the rightmost prefix principle when using composite indexes.