Alibaba Cloud ACA Big Data Certification Exam ACA-BigData1 Exam Dumps: Updated Questions & Answers (October 2025)

Question # 1

A business flow in DataWorks integrates different node task types by business type, such a structure

improves business code development facilitation. Which of the following descriptions about the node

type is INCORRECT?

Score 2

A zero-load node is a control node that does not generate any data. The virtual node is generally used

as the root node for planning the overall node workflow.

An ODPS SQL task allows you to edit and maintain the SQL code on the Web, and easily implement

code runs, debug, and collaboration.

The PyODPS node in DataWorks can be integrated with MaxCompute Python SDK. You can edit the

Python code to operate MaxCompute on a PyODPS node in DataWorks.

The SHELL node supports standard SHELL syntax and the interactive syntax. The SHELL task can run on

the default resource group

Question # 2

Table is a data storage unit in MaxCompute. It is a two-dimensional logical structure composed of

rows and columns. All data is stored in the tables. Operating objects of computing tasks are all tables. A

user can perform create table, drop table, and tunnel upload as well as update the qualified data in the

table.

Score 1

True

False

Question # 3

Which of the following task types does DataWorks support?

(Number of correct answers: 4)

Data Synchronization

SHELL

MaxCompute SQL

MaxCompute MR

Scala

Question # 4

You want to understand more about how users browse your public website. For example,

you want to know which pages they visit prior to placing an order. You have a server farm

of 100 web servers hosting your website. Which is the most efficient process to gather

these web servers across logs into traditional Hadoop ecosystem.

Just copy them into HDFS using curl

Ingest the server web logs into HDFS using Apache Flume

Channel these clickstreams into Hadoop using Hadoop Streaming

Import all user clicks from your OLTP databases into Hadoop using Sqoop

Question # 5

MaxCompute tasks contain computational tasks and non-computational tasks. The

computational tasks require actual operations on data stored in the table. MaxCompute

parses the task to obtain its execution plan, and submits the task for execution. The noncomputational

tasks require substantial reading of and modification to metadata

information. Therefore, the task is not parsed, and no execution plan is provided. The

task is directly submitted for execution. The latter one has a faster response speed than

the former one. Which of the following operations on the table t_test is a computational

task?

desc t_test

alter table t_test add columns (comments string);

select count(*) from t_test;

truncate table t_test;

Question # 6

Scenario: Jack is the administrator of project prj1. A new team member, Alice (already has an Alibaba

Cloud account alice@aliyun.com), applies for joining this project with the following permissions: view

table lists, submit jobs, and create tables. Which of the following SQL statements is useless:

Score 2

use prj1;

add user aliyun$alice@aliyun.com;

grant List, CreateTable, CreateInstance on project prj1 to user aliyun$alice@aliyun;

flush privileges;

Question # 7

_______ instances in E-MapReduce are responsible for computing and can quickly add computing

power to a cluster. They can also scale up and down at any time without impacting the operations of the

cluster.

Score 2

Task

Gateway

Master

Core

Question # 8

DataV is a powerful yet accessible data visualization tool, which features geographic information

systems allowing for rapid interpretation of data to understand relationships, patterns, and trends.

When a DataV screen is ready, it can embed works to the existing portal of the enterprise through

______.

Score 2

URL after the release

URL in the preview

MD5 code obtained after the release

Jar package imported after the release

Question # 9

MaxCompute Tunnel provides high concurrency data upload and download services. User can use

the Tunnel service to upload or download the data to MaxCompute. Which of the following descriptions

about Tunnel is NOT correct:

Score 2

MaxCompute Tunnel provides the Java programming interface for usersB. MaxCompute provides two data import and export methods: using Tunnel Operation on the console

directly or using TUNNEL written with java

If data fails to be uploaded, use the restore command to restore the upload from where it was

interrupted

Tunnel commands are mainly used to upload or download data.They provide the following

functions:upload, download, resume, show, purge etc.

Question # 10

In order to improve the processing efficiency when using

MaxCompute, you can specify the partition when creating a

table. That is, several fields in the table are specified as

partition columns. Which of the following descriptions aboutMaxCompute partition table are correct? (Number of correct

answers: 4)

In most cases, user can consider the partition to be the

directory under the file system

User can specify multiple partitions, that is, multiple

fields of the table are considered as the partitions of the

table, and the relationship among partitions is similar to

that of multiple directories

If the partition columns to be accessed are specified

when using data, then only corresponding partitions are

read and full table scan is avoided, which can improve the

processing efficiency and save costs

MaxCompute partition only supports string type and the

conversion of any other types is not allowed

The partition value cannot have a double byte characters

(such as ChinesE.

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Alibaba Cloud ACA Big Data Certification Exam ACA-BigData1 Exam Dumps: Updated Questions & Answers (October 2025)

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