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Alibaba Cloud ACA-BigData1 Dumps

ACA Big Data Certification Exam Questions and Answers

Question 1

MaxCompute is a general purpose, fully managed, multi-tenancy data processing platform for largescale data warehousing, and it is mainly used for storage and computing of batch structured data. Which

of the following is not a use case for MaxCompute?

Score 2

Options:

A.

Order management

B.

Date Warehouse

C.

Social networking analysis

D.

User profile

Question 2

Tom is the administrator of a project prj1 in MaxCompute. The project involves a large volume of

sensitive data such as user IDs and shopping records, and many data mining algorithms with proprietary

intellectual property rights. Tom wants to properly protect these sensitive data and algorithms. To be

specific, project users can only access the data within the project, all data flows only within the project.

What operation should he perform?

Score 2

Options:

A.

Use ACL authorization to set the status to read-only for all users

B.

Use Policy authorization to set the status to read-only for all users

C.

Allow the object creator to access the object

D.

Enable the data protection mechanism in the project, using set ProjectProtection=true;

Question 3

DataWorks provides two billing methods: Pay-As-You-Go (post-payment) and subscription (prepayment). When DataWorks is activated in pay-as-you-go mode, Which of the following billing items will

not apply?

Score 2

Options:

A.

Shared resource groups for scheduling and Data Integration instances

B.

Baseline instances generated by Intelligent Monitor and Data Quality checks

C.

Task nodes created by developer

D.

Calls and execution time of APIs compiled in DataService Studio

Question 4

If a task node of DataWorks is deleted from the recycle bin, it can still be restored.

Options:

A.

True

B.

False

Question 5

commark is an open-source framework that functions on the service level to support data processing

and analysis operations. Equipped with unified computing resources and data set permissions, Spark on

MaxCompute allows you to submit and run jobs while using your preferred development methods.

Which of the following descriptions about Spark on MaxCompute is NOT correct:

Score 2

Options:

A.

Spark on MaxCompute provides you with native Spark Web UIs.

B.

Different versions of Spark can run in MaxCompute at the same time.

C.

Similar to MaxCompute SQL and MaxCompute MapReduce, Spark on MaxCompute runs in the unified

computing resources activated for MaxCompute projects.

D.

Spark on MaxCompute has a separate permission system which will not allow users to query data

without any additional permission modifications required.

Question 6

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)

Options:

A.

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

directory under the file system

B.

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

C.

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

D.

MaxCompute partition only supports string type and the

conversion of any other types is not allowed

E.

The partition value cannot have a double byte characters

(such as ChinesE.

Question 7

Your company stores user profile records in an OLTP databases. You want to join the serecords with web server logs you have already ingested into the Hadoop file system.

What is the best way to obtain and ingest these user records?

Options:

A.

Ingest with Hadoop streaming

B.

Ingest using Hive

C.

Ingest with sqoop import

D.

Ingest with Pig's LOAD command

Question 8

If a MySQL database contains 100 tables, and jack wants to migrate all those tables to MaxCompute

using DataWorks Data Integration, the conventional method would require him to configure 100 data

synchronization tasks. With _______ feature in DataWorks, he can upload all tables at the same time.

Score 2

Options:

A.

Full-Database Migration feature

B.

Configure a MySQL Reader plug-in

C.

Configure a MySQL Writer plug-in

D.

Add data sources in Bulk Mode

Question 9

Which of the following task types does DataWorks support?

(Number of correct answers: 4)

Options:

A.

Data Synchronization

B.

SHELL

C.

MaxCompute SQL

D.

MaxCompute MR

E.

Scala

Question 10

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

Options:

A.

URL after the release

B.

URL in the preview

C.

MD5 code obtained after the release

D.

Jar package imported after the release

Question 11

The data development mode in DataWorks has been upgraded to the three-level structure

comprising of _____, _____, and ______. (Number of correct answers: 3)

Score 2

Options:

A.

Project

B.

Solution

C.

Business flow

D.

Directory