ACA-Developer問題集、Alibaba Cloud実際の試験問題

質問 1

Which of the following web applications are suitable for deployment on Simple Application Server (SAS), as compared with LCS? (Number of correct answers: 3)

A. Set up a NoSQL database service

B. Quickly build a personal, learning, or test environment

C. Quickly build a personal blog website

D. Quickly build serverless site using Function Compute

E. Quickly build a small e-commerce website

正解: B,C,D

質問 2

When versioning is enabled for an OSS Bucket, previous versions of objects will be retained, using storage space and incurring additional costs. How can you save space and reduce costs, while retaining some of the benefits of object versioning?

A. Use OSS's built in lifecycle management capabilities to move old versions of objects to Archival Storage.

B. Use the Function Compute Service to regularly check for and delete old versions of objects.
C Use OSS s built in lifecycle management capabilities to automatically delete old versions of objects after a set time.

C. Avoid using version management.

正解: A

質問 3

What are the benefits of creating indexes on PolarDB? (Number of correct answers: 2)

A. Improve the efficiency of DML operations such as UPDATE.

B. Reduce invalid data scanning.

C. Improve the efficiency of DDL operations.

D. Improve the query efficiency SELECT statements.

正解: B,D

質問 4

An Elastic Compute Service (ECS) instance (private IP only) needs to read data from a RDS MySQL database in another VPC through a private IP address, and at the same time, RDS's public internet endpoint needs to be available for requests from some internet clients. Which steps must be taken to allow applications to access this RDS instance via both interfaces? (Number of correct answers: 2)

A. Connect the two VPCs through CEN.

B. Make sure that the security group of the ECS instance allows outbound access to the MySQL service port.

C. Add the private and public IP addresses of all applications to the RDS whitelist.

D. Configure a NAT gateway for the VPC to which the ECS instance belongs.

正解: D

質問 5

Which of the following options is correct, regarding Object ACL in Alibaba Cloud's Object Storage Service (OSS)?

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

B. 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.

C. "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.

D. 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.

正解: B

質問 6

Which of the following features are unique to Alibaba Cloud Container Registry, as compared with Docker Hub? (Number of correct answers: 2)

A. For source code hosted on websites outside China, Container Registry can use servers outside China to build Docker images, even when you are using a Container Registry instance in Mainland China.

B. You can set your image repository access to public or private.

C. You can create and delete image repositories in different regions based on your needs.

D. Container Registry can automatically build new Docker images when source code changes.

正解: A,B

質問 7

Which of the following configurations cannot improve the stability, reliability or availability of an Alibaba Cloud Scaling Group? (Number of correct answers: 3)

A. Choose a variety of different ECS types when creating your Scaling Configuration

B. In the process of creating a Scaling Group, associate multiple Server Load Balancers

C. Select multiple VPCs when creating the scaling group

D. When creating the scaling group, select multiple Vswitches in multiple Zone within a Region

正解: A,B,C

質問 8

A Developer is asked to implement a caching layer in front of RDS. Cached content is expensive to regenerate in case of service failure. Which implementation below would work while maintaining maximum uptime?

A. Migrate the ROS database to HBase to save the cache layer

B. Implement ApsaraDB for Redis in Cluster Mode

C. Implement ApsaraDB for Redis in Standard Mode

D. Install Redis on an ECS instance

正解: A

質問 9

CloudMonitor's "Event Monitoring" feature provides you with event reporting, query, and alarm functions, Score 2 so that you can collect metrics on your running Alibaba Cloud systems, and receive alerts when something goes wrong. Which of these is NOT a correct description of the monitoring event types supported by CloudMonitor?

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

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

C. 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.

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

正解: B

質問 10

You have a Java application with source code stored on GitHub. Now you want to build a container image using this code, and store it on a Container Registry instance located in Mainland China. Which of the following is the simplest, lowest maintenance option?

A. Download the Java code from GitHub to your laptop, build the Docker image using a local Dockerfile, and use docker push to upload It to Container Registry.

B. Upload the Dockerfile to GitHub for version control, then download it together with the Java code to your local device, compile and pack container image, and upload the image to Alibaba Cloud Container Registry via docker push .

C. Associate your Alibaba Cloud Container Registry instance with your GitHub repository, and upload the Java code and Dockerfile to GitHub Th Container Registry's built-in build service, configuring a rule that will rebuild your container image whenever your GitHub code is updated

D. Associate your Alibaba Cloud Container Registry instance with your GitHub repository, and upload the Java code and Dockerfile to GitHub Set u Jenkins environment to automate the process of building the container image and pushing it to your Container Registry instance.

正解: C

Alibaba Cloud ACA Developer Certification - ACA-Developer 模擬練習