ACA-Developer Exam Training Practice Tests (Alibaba Cloud ACA Developer Certification)]

Question 1

Which of the following detection protocol is NOT supported by CloudMonitor's Site Monitoring feature?

A. SNMP B. TCP/UDP C. DNS D. HTTP(S)

Correct Answer: A

Question 2

Alibaba Cloud Content Delivery Network (CDN) is a suitable product for the following scenarios: (Number of correct answers: 2)

A. Static sites with more than 100,000 daily page views. B. Images, HTML, CSS and JS files on a medium-sized E-commerce website. C. News websites with more than 30 million daily page views and users are all from Singapore. D. BBS forums with less than 100 daily page views.

Correct Answer: C,D

Question 3

A developer runs a web application on a physical machine in an IDC. The machine is running Ubuntu Linux.
Which of the following is the recommended method if he wants to migrate this web application onto an Alibaba Cloud ECS instance?

A. Use a third-party image creation tool to create an image from the physical server. Upload the image to the ECS console to turn it into a custom image. Then, use the custom image to create ECS instances. B. Use SMC(Server Migration Center) to collect data from the origin physical server. Create an intermediate ECS instance on Alibaba Cloud and wait for the data transfer to complete. Then generate a new image directly from that intermediate ECS instance. C. Use a third-party image creation tool to create an image from the physical server. The image is then uploaded to Alibaba Cloud Object Storage Service (OSS) for storage. In the ECS console, import that image from OSS, then, create an ECS instance from the custom image.

Correct Answer: A

Question 4

Which of these are suitable use cases for Alibaba Cloud's MongoDB service? (Number of correct answers: 3)

A. Applications where JSON is a good choice of storage format B. Scenarios where complex transaction support is required C. Applications requiring high OPS, such as logging apps D. Applications requiring geo-location queries, such as logistics or order status apps

Correct Answer: B,C,D

Question 5

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

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

Correct Answer: A

Question 6

Alibaba Cloud Link Tracing Analysis supports call link reporting based on the Open Tracing standard. Which of the following client types does link tracing support? (Number of correct answers:3)

A. Jaeger B. Pinpoint C. Zipkln D. Skywalklng

Correct Answer: A

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Question 7

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)

A. The instance is in the running state B. The instance has a backup task being executed C. The targeted RDS instance is a disaster recovery instance D. No instance type (specification) was included in the request parameters

Correct Answer: A,B,D

Question 8

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. Configure a life cycle rule that matches the entire bucket, and delete all files after one day B. Directly delete the bucket C. Manually delete them one by one D. Call the API from a script, deleting files in batches

Correct Answer: C

Question 9

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. Server is busy: please try later B. The requested digital signature does not match C. The log project (Project) does not exist D. Server internal error

Correct Answer: C

Question 10

Which data format is NOT supported by Alibaba Cloud Message Service?

A. JSON B. XML C. SIMPLIFIED D. VERBOSE

Correct Answer: D

Alibaba Cloud ACA Developer Certification - ACA-Developer Exam Practice Test