ACA-BigData1 ACA Big Data Certification Exam Questions and Answers

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)

_______ instances in E-MapReduce are responsible for computing and can quickly add computing

power to a cluster. They can also scale up and down at any time without impacting the operations of the

cluster.

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

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

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

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

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 DataWorks, a task should be instantiated first before a

scheduled task is running every time, that is, generating a

corresponding instance which is executed for running the

scheduled task. The status is different in each phase of the

scheduling process, including ________. (Number of correct

answers: 3)

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

Score 2

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

If the DataWorks(MaxCompute) tables in your request belong to two owners. In this case, Data

Guard(DataWorks component) automatically splits your request into two by table owner.

Score 1

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

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

Your company stores user profile records in an OLTP databases. You want to join the serecords 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?

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

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 ______.

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

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

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

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