ACA-BigData1 Sample Questions Answers

AliOrg Company plans to migrate their data with virtually no downtime. They want all the data

changes to the source database that occur during the migration are continuously replicated to the

target, allowing the source database to be fully operational during the migration process. After the

database migration is completed, the target database will remain synchronized with the source for as

long as you choose, allowing you to switch over the database at a convenient time. Which of the

following Alibaba products is the right choice for you to do it:

Score 2

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

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

DataWorks provides powerful scheduling capabilities including time-based or dependency-based

task trigger mechanisms to perform tens of millions of tasks accurately and punctually each day based

on DAG relationships. It supports multiple scheduling frequency configurations like: (Number of correct

answers: 4)

Score 2

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

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

Score 2

In MaxCompute command line, if you want to view all tables in a project, you can execute command:

______.

Score 2

There are three types of node instances in an E-MapReducecluster: master, core, and _____ .

Score 2

Project is an important concept in MaxCompute. A user can create multiple projects, and each object

belongs to a certain project.

Score 1

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

Synchronous development in DataWorks provides both wizard and script modes.

Score 1

An enterprise uses Alibaba Cloud MaxCompute for storage of service orders, system logs and

management data. Because the security levels for the data are different, it is needed to register multiple

Alibaba Cloud accounts for data management.

Score 1

In MaxCompute, you can use Tunnel command line for data upload and download. Which of the

following description of Tunnel command is NOT correct:

Score 2

When odpscmd is used to connect to a project in MaxCompute, the command ______ can be

executed to view the size of the space occupied by table table_a.

Score 2

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

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

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?

DataService Studio in DataWorks aims to build a data service bus to help enterprises centrally

manage private and public APIs. DataService Studio allows you to quickly create APIs based on data

tables and register existing APIs with the DataService Studio platform for centralized management and

release. Which of the following descriptions about DataService Studio in DataWorks is INCORRECT?

Score 2

There are multiple connection clients for MaxCompute, which of the following is the easiest way to

configure workflow and scheduling for MaxCompute tasks?

Score 2

Which of the following task types does DataWorks support?

(Number of correct answers: 4)

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 ______.