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Alibaba Cloud ACA-Developer Exam With Confidence Using Practice Dumps

Exam Code:
ACA-Developer
Exam Name:
ACA Developer Certification
Certification:
Alibaba Developer
Vendor:
Alibaba Cloud
Questions:
95
Last Updated:
Feb 15, 2026
Exam Status:
Stable
Alibaba Cloud ACA-Developer

ACA-Developer: Alibaba Developer Exam 2025 Study Guide Pdf and Test Engine

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ACA Developer Certification Questions and Answers

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Question 1

Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)

Options:

A.

Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console

B.

A STS request consists of an access address, communication protocol, request method, request parameters and character encoding

C.

When calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made

D.

The STS service supports the use of both HTTP and HTTPS protocols

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Question 2

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

Options:

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.

"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.

C.

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

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.

Question 3

Which of the following is NOT a valid state for a scaling activity in Alibaba Cloud's Elastic Scaling Service ESS -also known as Auto Scaling) state of the scaling activity in the Alibaba Cloud elastic

scaling group?

Options:

A.

Rejected

B.

Executing

C.

Failed

D.

Timeout

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