ACA-Developer

When a developer calls the Alibaba Cloud SDK to access Elastic Compute Service (ECS), the following error is returned; RealNameAuthenticationError What is the possible cause?A . The ECS instance name violates the ECS service's naming conventions.B . The ECS instance name conflicts with other instance names.C . The user's Alibaba...

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 . The log project (Project) does not existB . The requested digital signature does not matchC . Server internal errorD . Server...

Which of the following programming languages are supported by the Alibaba Cloud SDK? (Number of correct answers: 3)A . JavaB . SwiftC . PHPD . PythonE . Bash shellView AnswerAnswer: A,C,D Explanation: https://www.alibabacloud.com/help/doc-detail/74712.htm

you have a Node.js based application and you plan to migrate it to Alibaba Cloud Function Compute, which of the following steps is unnecessary?A . Manually install the Node. Js package in the Function Compute consoleB . Create a single web application and upload the corresponding code package via the...

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?A...

In order to have your applications interact with Alibaba Cloud RabbitMQ, you need to create related MQ resources first. Which of the following resources must be created? (Number of correct answers: 3)A . VhostB . ExchangeC . QueueD . BrokerE . TopicView AnswerAnswer: B,C,E

Assume that a company uses ApsaraDB for PolarDB. The company commonly queries users based on their basic information, including: addresses, company names, and ID numbers. In this scenario, what is the best practice for creating a database index (or indexes)?A . Create a b-tree index on each column to be...

A developer is writing logs through the Log Service API, and can see via the Logstore monitorin metrics that write traffic is about 10 MB/s, but a 403 error is reported during the writing process. Which of these is a possible cause?A . There is significant network delayB . The...

Which of the following are correct, regarding RAM users? (Number of correct answers: 3)A . RAM users can be created under a single Alibaba Cloud account, corresponding to employees, systems, or applications.B . RAM users do not "own" the resources that they create (those belong to the Alibaba Cloud account...

Company A has a large number of files store in Alibaba Cloud OSS that need to be deleted (numbering in the tens of thousands). What is the fastest, easiest way to delete these files?A . Manually delete them one by oneB . Configure a life cycle rule that matches the...