Online Prep Questions for AliCloud ACA-BIGDATA1 Exam

Posted by: Pdfprep Category: AliCloud Online Questions Tags: ACA-BIGDATA1 Online Questions Post Date: January 4, 2021

Pdfprep2021-01-04T08:09:31+00:00

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1. MaxCompute is a fast and fully-managed TB/PB-level data warehousing solution provided by Alibaba Cloud.

Which of the following product features are correct? ______ (Number of correct answers: 3) Score 2

Distributed architecture

High security and reliability

Multi-level management and authorization

Efficient transaction processing

Fast real-time response

2. Your company stores user profile records in an OLTP databases. You want to join these records 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? Score 2

Ingest with Hadoop streaming

Ingest using Hive

Ingest with sqoop import

Ingest with Pig's LOAD command

3. The FTP data source in DataWorks allows you to read/write data to FTP, and supports configuring synchronization tasks in wizard and script mode. Score 1

True

False

4. In a scenario where a large enterprise plans to use MaxCompute to process and analyze its data, tens of thousands of tables and thousands of tasks are expected for this project, and a project team of 40 members is responsible for the project construction and O&M. From the perspective of engineering,

which of the following can considerably reduce the cost of project construction and management? Score 2

Develop directly on MaxCompute and use script-timed scheduling tasks

Use DataWorks

Use Eclipse

Use a private platform specially developed for this project

5. In DataWorks table permission system, you can revoke permissions only on the fields whose security level is higher than the security level of your account. Score 1

True

False

6. MaxCompute can coordinate multiple users to operate one project through ACL authorization. The objects that can be authorized by ACL include ______. (Number of correct answers: 3) Score 2

Project

Table

Resource

Procedure

7. A dataset includes the following items (time, region, sales amount). If you want to present the information above in a chart, ______ is applicable. Score 2

Bubble Chart

Tree Chart

Pie Chart

Radar Chart

8. A start-up company wants to use Alibaba Cloud MaxCompute to provide product recommendation services for its users. However, the company does not have much users at the initial stage, while the charge for MaxCompute is higher than that of ApsaraDB RDS, so the company should be recommended to use MaxCompute service until the number of its users increases to a certain size. Score 1

True

False

9. 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

10. Users can use major BI tools, such as Tablueu and FineReport, to easily connect to MaxCompute projects, and perform BI analysis or ad hoc queries. The quick query feature in MaxCompute is called _________ allows you to provide services by encapsulating project table data in APIs, supporting diverse application scenarios without data migration. Score 2

Lightning

MaxCompute Manager

Tunnel

Labelsecurity

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11. 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

Full-Database Migration feature

Configure a MySQL Reader plug-in

Configure a MySQL Writer plug-in

Add data sources in Bulk Mode

12. JindoFS in E-MapReduce provided by SmartData uses OSS as the storage back end. Score 1

True

False

13. The data development mode in DataWorks has been upgraded to the three-level structure comprising of _____, _____, and ______. (Number of correct answers: 3) Score 2

Project

Solution

Business flow

Directory

14. There are various methods for accessing to MaxCompute, for example, through management console, client command line, and Java API. Command line tool odpscmd can be used to create, operate, or delete a table in a project. Score 1

True

False

15. 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

16. In order to ensure smooth processing of tasks in the Dataworks data development kit, you must create an AccessKey. An AccessKey is primarily used for access permission verification between various Alibaba Cloud products. The AccessKey has two parts, they are ____. (Number of correct answers: 2) Score 2

Access Username

Access Key ID

Access Key Secret

Access Password

17. 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 SD

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

18. 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 ______.

URL after the release

URL in the preview

MD5 code obtained after the release

Jar package imported after the release

19. DataWorks can be used to develop and configure data sync tasks.

Which of the following statements are correct? (Number of correct answers: 3) Score 2

The data source configuration in the project management is required to add data source

Some of the columns in source tables can be extracted to create a mapping relationship between fields, and constants or variables can't be added

For the extraction of source data, "where" filtering clause can be referenced as the criteria of incremental synchronization

Clean-up rules can be set to clear or preserve existing data before data write

20. You are working on a project where you need to chain together MapReduce, Hive jobs. You also need the ability to use forks, decision points, and path joins.

Which ecosystem project should you use to perform these actions? Score 2

Spark

HUE

Zookeeper

Oozie

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21. MaxCompute supports two kinds of charging methods: Pay-As-You-Go and Subscription (CU cost). Pay-As-You-Go means each task is measured according to the input size by job cost. In this charging method the billing items do not include charges due to ______. Score 2

Data upload

Data download

Computing

Storage

22. In MaxCompute, if error occurs in Tunnel transmission due to network or Tunnel service, the user can resume the last update operation through the command tunnel resume; Score 1

True

False

23. You are working on a project where you need to chain together MapReduce, Hive jobs. You also need the ability to use forks, decision points, and path joins.

Which ecosystem project should you use to perform these actions?

Apache HUE

Apache Zookeeper

Apache Oozie

Apache Spark

24. Where is the meta data(e.g.,table schemas) in Hive? Score 2

Stored as metadata on the NameNode

Stored along with the data in HDFS

Stored in the RDBMS like MySQL

Stored in ZooKeeper

25. Scenario: Jack is the administrator of project prj1. The project involves a large volume of sensitive data such as bank account, medical record, etc. Jack wants to properly protect the data.

Which of the follow statements is necessary?

set ProjectACL=true;

add accountprovider ram;

set ProjectProtection=true;

use prj1;

26. Resource is a particular concept of MaxCompute. If you want to use user-defined function UDF or MapReduce, resource is needed. For example: After you have prepared UDF, you must upload the compiled jar package to MaxCompute as resource.

Which of the following objects are MaxCompute resources? (Number of correct answers: 4)

Score 2

Files

Tables: Tables in MaxCompute

Jar: Compiled Java jar package

Archive: Recognize the compression type according to the postfix in the resource name

ACL Policy

27. Which of the following is not proper for granting the permission on a L4 MaxCompute table to a user. (L4 is a level in MaxCompute Label-based security (LabelSecurity), it is a required MaxCompute Access Control (MAC) policy at the project space level. It allows project administrators to control the user access to column-level sensitive data with improved flexibility.) Score 2

If no permissions have been granted to the user and the user does not belong to the project, add the user to the project. The user does not have any permissions before they are added to the project.

Grant a specific operation permission to the user.

If the user manages resources that have labels, such as datasheets and packages with datasheets, grant label permissions to the user.

The user need to create a project in simple mode

28. Synchronous development in DataWorks provides both wizard and script modes. Score 1

True

False

29. Alibaba Cloud Quick BI reporting tools support a variety of data sources, facilitating users to analyze

and present their data from different data sources. ______ is not supported as a data source yet. Score 2

Results returned from the API

MaxCompute

Local Excel files

MySQL RDS

30. 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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31. MaxCompute takes Project as a charged unit. The bill is charged according to three aspects: the usage of storage, computing resource, and data download respectively. You pay for compute and

storage resources by the day with no long-term commitments. Score 1

True

False

32. Machine Learning Platform for Artificial Intelligence (PAI) node is one of the node types in DataWorks business flow. It is used to call tasks created on PAI and schedule production activities based on the node configuration. PAI nodes can be added to DataWorks only _________. Score 2

after PAI experiments are created on PAI

after PAI service is activated

after MaxCompute service is activated

Spark on MaxCompute Machine Learning project is created

Online Prep Questions for AliCloud ACA-BIGDATA1 Exam

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