ACA Developer Certification ACA-Developer Latest Study Guide With Real Q&AS

ACA Developer Certification ACA-Developer exam is the associate level of Alibaba Cloud Developer certification, which is designed for individuals who hold development positions and use Alibaba Cloud products to manage and maintain Alibaba Cloud-based applications. Studying ACA Developer certification with the latest ACA-Developer study guide is recommend. Come to ITExamShop to download ACA-Developer exam questions and answers in pdf file that you can be well-prepared ACA Developer certification exam.

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1. Serverless Workflow allows you to orchestrate distributed tasks in sequence, branch, and parallel modes, and ensure that tasks are reliably coordinated according to your workflow logic.

Which of the following service integration modes is not supported by Serverless Workflow?

Request response mode

Synchronization mode

Asynchronous mode

Waiting for callback mode

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2. Assume that a company uses ApsaraDB for PolarDB. The company commonly queries users based on their basic information, including: addresses, company names, and ID numbers.

In this scenario, what is the best practice for creating a database index (or indexes)?

Create a b-tree index on each column to be searched.

Create a hash index on each column to be searched.

Create a gin index for multiple fields.

Create a gist index for multiple fields.

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3. A certain project of Enterprise A (called Project-X) moves to the cloud and will need to use a variety of s Alibaba Cloud resources, such as ECS instances, RDS instances, SLB instances, and OSS storage space. There are multiple employees on the project who need to operate these cloud resources.

Because each employee has different job responsibilities and requires different permissions, what is the WRONG approach to resource management?

Create RAM users each employee, and set login passwords or create AccessKey credentials as needed

When creating RAM for users, give each user both web console AND AccessKey credentials: there is no need to keep these separate

When there are multiple RAM users under a cloud account, create user groups to classify and authorize RAM users with the same responsibilities

Use system policies to bind reasonable permissions policies to users or user groups, and customize policies for more fine-grained control

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4. Which of the following options is not included in Object Storage Service (OSS) object URLs?

Region name

Zone name

Bucket name

Filename

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5. Which of the following statements are correct, with regard to Alibaba Cloud Log Service? (Number of correct answers: 3)

As an agent for collecting logs, Logtail can collect logs from existing system log files in a non-intrusive manner

The Log Service frontend service adopts an LVS + NGINX architecture

The Logstore backend service is deployed on a single machine to complete the real-time persistence, indexing, query and delivery of Logstore data to MaxCompute

Each log written to the Log Service backend will be saved in triplicate (across three separate physical servers)

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

Improve the query efficiency SELECT statements.

Improve the efficiency of DML operations such as UPDAT

Improve the efficiency of DDL operations.

Reduce invalid data scanning.

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7. To meet data analytics requirements on large datasets, which of these databases can meet the demand for structured and semi-structured storage for almost all types of data, albeit with limited support for strong transactions?

HBase

OceanBase

RDSMariaDB

TSDB

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8. Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)

DMS (Data Management Service)

aliyun-cll

Redis-cIl

Sentinel

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9. you have a Node.js based application and you plan to migrate it to Alibaba Cloud Function Compute, which of the following steps is unnecessary?

Manually install the Node. Js package in the Function Compute console

Create a single web application and upload the corresponding code package via the Function Compute console (or fcli)

Configure program startup commands and access ports in the Function Compute console

Start and verify the application in the Function Compute console

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10. 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?

Implement ApsaraDB for Redis in Cluster Mode

Install Redis on an ECS instance

Implement ApsaraDB for Redis in Standard Mode

Migrate the ROS database to HBase to save the cache layer

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11. On which operating systems can you install Alibaba Cloud command line tools? (Number of correct answers: 3)

Windows

Linux

macOS

Android

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