Free Alibaba ACA-Developer Exam Questions

Become Alibaba Certified with updated ACA-Developer exam questions and correct answers

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Total 96 Questions | Updated On: Jul 29, 2025

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Question 1

Which of the following permission control policies does Object Storage Service (OSS) provide for access to

objects stored in a bucket? (Number of correct answers: 4)

A : L

B : M Policy

C : cket Policy

D : authorization

E : namic blacklist

F : ject Policy

G : IntranetAccess

Answer: A,C,D

Question 2

A developer creates a MySQL database service on a Linux ECS instance (ECS-A), and wants to access this

database service from another instance (ECS-B) in the same VPC using the private IP address bound to the

ECS instance, however, the connection can't be established. What could cause this? (Number of correct

answers: 2)

A : security group for ECS-A does not have the default MySQL service port open.

B : built-in firewall on ECS-A has rules that prohibit external access to the MySQL service port.

C : Internet IP address is configured for ECS-A.

D : bind-address parameter set in the my.ini configuration file of the MySQL service is commented out.

Answer: C,D

Question 3

When you use SQL statements to access tables in a database without an index configured, a full table scan will

be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data

and consume a lot of the database's resources. Which of the following options are best practices when creating

database indexes? (Number of correct answers: 3)

A : Add an index to a field that is frequently queried but does not frequently perform add, delete, or modifyoperations.

B : Applies indices to fields that contain many records.

C : table should not contain more than 6 indexed fields.

D : ply indexing to fields of fixed length (preferably not long fields).

E : here to the rightmost prefix principle when using composite indexes.

Answer: A,B,D

Question 4

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

A : L

B : ON

C : MPLIFIED

D : RBOSE

Answer: D

Question 5

The event monitoring feature in CIoudMonitor provides custom event monitoring functions. Which of the

following data reporting methods are included? (Number of correct answers: 3)

A : port event monitoring through the Python SDK

B : port event monitoring through the Java SDK

C : port event monitoring data via HTTP

D : port event monitoring data through the command line (CU)

Answer: A,B,C

Page: 1 / 20

Total 96 Questions | Updated On: Jul 29, 2025

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