ACA Big Data Certification ACA-BIGDATA1 Questions

dumps2022-01-10T02:30:11+08:00

ACA Big Data Certification ACA-BIGDATA1 questions are valuable for you to pass the test easily. In real Alibaba Cloud ACA-BIGDATA1 exam, there are 60 questions, and you have 90 minutes to complete the test. The required passing score of ACA-BIGDATA1 exam is 65. The available language is English. Free ACA Big Data Certification ACA-BIGDATA1 exam questions are available below.

Page 1 of 3

1. 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

Shared resource groups for scheduling and Data Integration instances

Baseline instances generated by Intelligent Monitor and Data Quality checks

Task nodes created by developer

Calls and execution time of APIs compiled in DataService Studio

2. Function Studio is a web project coding and development tool independently developed by the Alibaba Group for function development scenarios. It is an important component of DataWorks.

Function Studio supports several programming languages and platform-based function development scenarios except for ______ . Score 2

Real-time computing

Python

Java

Scala

3. Alibaba Cloud E-MapReduce can be easily plugged with other Alibaba Cloud services such as Log Service, ONS, MNS that act as data ingestion channels from real-time data streams.

Which of the following descriptions about real-time processing are correct? (Number of correct answers: 3)

This data is streamed and processed using Apache Flume or Kafka in integration with Apache Storm using complex algorithms

Kafka is usually preferred with Apache Storm to provide data pipeline

The final processed data can be stored in HDFS, HBase or any other big data store service in real time.

Apache Sqoop is used to do the real-time data transmission of structured data

4. 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

select size from table_a;

size table_a;

desc table_a;

show table table_a;

5. 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

6. 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

7. Data Migration Unit (DMU) is used to measure the amount of resources consumed by data integration, including CPU, memory, and network. One DMU represents the minimum amount of resources used for a data synchronization task.

Score 1

True

False

8. 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

9. By integrating live dashboards, DataV can present and monitor business data simultaneously. This data-driven approach enables for well-organized data mining and analysis allowing the user to seize new opportunities that otherwise might remain hidden. It can support wide range of databases and data formats.

Which of the following options DataV does not support?

Alibaba Cloud' s AnalyticDB, ApsaraDB

Static data in CSV and JSON formats

Oracle Database

MaxCompute Project

10. In each release of E-MapReduce, the software and software version are flexible.

You can select multiple software versions. Score 1

True

False

Page 2 of 3

11. 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

12. 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

Spark SQL for SQL and structured data processing

MLlib for machine learning

GraphX for graph processing

TensorFlow for AI

13. 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

By Minute

By Hour

By Day

By Week

By Second

14. 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

Upload: Supports file or directory (level-one) uploading. Data can only be uploaded to a single table or table partition each time.

Download: You can only download data to a single file. Only data in one table or partition can be downloaded to one file each time. For partitioned tables, the source partition must be specified.

Resume: If an error occurs due to the network or the Tunnel service, you can resume transmission of the file or directory after interruption.

Purge: Clears the table directory. By default, use this command to clear information of the last three days.

15. In DataWorks, we can configure alert policies to monitor periodically scheduled tasks, so that an alert will be issued timely. Currently DataWorks supports ________ alerts. (Number of correct answers: 2)

Text message

Telephone

Aliwangwang

16. 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 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

17. 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

18. MaxCompute SQL is suitable for processing less real-time massive data, and employs a syntax similar to that of SQL. The efficiency of data query can be improved through creating proper indexes in the table.

True

False

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

True

False

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

True

False

Page 3 of 3

21. 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;

22. When we use the MaxCompute tunnel command to upload the log.txt file to the t_log table, the t_log is a partition table and the partitioning column is (p1 string, p2 string).

Which of the following commands is correct?

tunnel upload log.txt t_log/p1="b1”, p2="b2"

tunnel upload log.txt t_log/(p1="b1”, p2="b2")

tunnel upload log.txt t_log/p1="b1"/p2="b2"

ACA Big Data Certification ACA-BIGDATA1 Questions

ACA Big Data Certification ACA-BIGDATA1 Questions

Share this post

Leave a Reply Cancel reply

Related Posts