Practice Free ACA-BigData1 ACA Big Data Certification Exam Exam Questions Answers With Explanation

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

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

Synchronous development in DataWorks provides both wizard and script modes.

Score 1

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

Score 1

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

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

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

MaxCompute Tunnel provides high concurrency data upload and download services. User can use

the Tunnel service to upload or download the data to MaxCompute. Which of the following descriptions

about Tunnel is NOT correct:

Score 2

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

Score 2

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

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

In each release of E-MapReduce, the software and software version are flexible. You can select

multiple software versions.

Score 1

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

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.

Which of the following Hadoop ecosystem componets can you choose to setup a streaming log

analysis system?(Number of correct answers: 3)

Score 2

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

Alibaba Cloud Elastic MapReduce (E-MapReduce) is a big data processing solution to quickly process

huge amounts of data. Based on open source Apache Hadoop and Apache Spark, E-MapReduce flexibly

manages your big data use cases such as trend analysis, data warehousing, and analysis of continuously

streaming data.

Score 1

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