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Free Alibaba Cloud ACA-BigData1 Practice Exam with Questions & Answers | Set: 2

Questions 11

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

Questions 12

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

Options:
A.

use prj1;

B.

add user aliyun$alice@aliyun.com;

C.

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

D.

flush privileges;

Questions 13

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

Options:
A.

Develop directly on MaxCompute and use script-timed scheduling tasks

B.

Use DataWorks

C.

Use Eclipse

D.

Use a private platform specially developed for this project

Questions 14

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

Options:
A.

True

B.

False

Questions 15

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

Questions 16

Apache Spark included in Alibaba E-MapReduce(EMR) is a fast and general-purpose cluster computing

system. It provides high-level APIs in Java, Scala, Python and R, and an optimized engine that supports

general execution graphs. It also supports a rich set of higher-level tools. Which of the following tools

does not be included in Spark?

Score 2

Options:
A.

Spark SQL for SQL and structured data processing

B.

MLlib for machine learning

C.

GraphX for graph processing

D.

TensorFlow for AI

Questions 17

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

Options:
A.

Stored as metadata on the NameNode

B.

Stored along with the data in HDFS

C.

Stored in the RDBMS like MySQL

D.

Stored in ZooKeeper

Questions 18

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

Options:
A.

Project

B.

Table

C.

Resource

D.

Procedure

Questions 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

Options:
A.

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

B.

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

C.

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

incremental synchronization

D.

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

Questions 20

Which node type in DataWorks can edit the Python code to operate data in MaxCompute?

Score 2

Options:
A.

PyODPS

B.

ODPS MR Node

C.

ODPS Script Node

D.

SHELL node