Alibaba Cloud ACA-Developer Practice Exam Dumps 2025

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Free ACA-Developer Exam Dumps

ACA Developer Certification Questions and Answers

Question 1

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)

Options:

Add an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.

Applies indices to fields that contain many records.

table should not contain more than 6 indexed fields.

Apply indexing to fields of fixed length (preferably not long fields).

Adhere to the rightmost prefix principle when using composite indexes.

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Question 2

You can use Alibaba Cloud Data transmission service (DTS) or the open source tool Redis-shake to migrate and synchronize data from a local Redis instance to an Alibaba Cloud Redis instance. What is one feature which DTS has but Redis-shake does not?

Options:

Full data migration

Incremental data migration

One-way data synchronization

Two-way data synchronization

Question 3

Elastic Container instance (ECI) is an agile, secure, serverless service for running containers. If you need to configure public network access for ECI, which of these are reasonable solutions? (Number of correct answers: 3)

Options:

Specify a public IP address when creating the ECI.

Bind a NAT gateway and an EIP to the VPC to which the ECI belongs.

Configure ECI as a backend for a Server Load Balancer (SLB) that has a public IP address.

Bind an Elastic IP (EIP) to the ECI instance.

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ACA-Developer Exam Dumps : ACA Developer Certification

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