Alibaba Cloud Content Delivery Network (CDN) is a suitable product for the following scenarios: (Number of correct answers: 2)
When using the Alibaba Cloud CLI, what is the default data format for responses, when executing queries such as "aliyun ecs Describelnstances"?
Which of the following features are unique to Alibaba Cloud Container Registry, as compared with Docker Hub? (Number of correct answers: 2)
A developer received a response code of 409 when trying to use a KMS key via the API. Given that a 409 response was returned, which of these states could the KMS key be in? (Number of correct answers: 3)
A developer accesses logs in a Log Service Logstore via the API. The error code returned by the server is 404. Which of these could be the cause?
A developer have written a web application using a microservice architecture, in such a architecture, the client (web browser or mobile application) first initiates a request. The request first reaches the load balancer, then goes through an authentication service, a billing service, then requests a resource, and finally a result is returned. How many spans does such a call chain consist of?
A developer is making the ModifyDDInstanceSpec API call to change the specifications of an RDS instance, but the operation fails. Why could this be? (Number of correct answers: 3)
During the process of backing up an RDS database, a developer found that the backup failed. What might cause this to happen?
Which of the following data volume types is not supported by Elastic Container Instance (ECI)?
A mobile application developer intends to use Alibaba Cloud Object Storage Service (OSS) to store the end user data for their app, and to ensure data isolation between each user of the app, to prevent one user from obtaining another's data. Which method can be done to meet these requirements?