ACA Big Data and Analytics Services 3

Question 1

What does the term 'partitioned table' mean in the context of MaxCompute?

Accepted Answer

A table divided into logical segments by partition key values to improve query performance and reduce scan costs

Answer

A table stored across multiple Alibaba Cloud regions

Answer

A table with encrypted columns

Answer

A table replicated for high availability

Question 2

Which Alibaba Cloud service provides a fully managed platform for building, training, and deploying machine learning models?

Accepted Answer

Machine Learning Platform for AI (PAI)

Answer

DataWorks

Answer

MaxCompute

Answer

Quick BI

Question 3

In Alibaba Cloud's big data services, what is DataV primarily used for?

Accepted Answer

Building large-screen, real-time data visualization dashboards for public displays

Answer

Managing Flink stream processing jobs

Answer

Ingesting IoT sensor data

Answer

Running Hadoop MapReduce jobs

Question 4

Which access control mechanism does MaxCompute use to grant fine-grained permissions on tables, projects, and resources?

Accepted Answer

Role-based access control (RBAC) combined with policy-based ACLs

Answer

Only IP whitelisting

Answer

Shared passwords for all users

Answer

Guest mode only

Question 5

What is the primary purpose of the 'External Table' feature in MaxCompute?

Accepted Answer

Querying data stored in external systems like OSS directly from MaxCompute without importing it

Answer

Exporting MaxCompute data to an external database

Answer

Creating backup copies of internal tables

Answer

Sharing tables between multiple MaxCompute projects

Question 6

When using E-MapReduce (EMR) on Alibaba Cloud, where is it recommended to store large datasets to reduce costs and decouple storage from compute?

Accepted Answer

On Alibaba Cloud OSS (Object Storage Service)

Answer

Directly on EMR master node local disks

Answer

On EMR worker node local SSDs only

Answer

On a dedicated RDS instance

Question 7

Which Alibaba Cloud big data service provides a Serverless Spark computing environment that allows running Spark jobs without managing clusters?

Accepted Answer

MaxCompute Spark

Answer

E-MapReduce Serverless

Answer

Serverless Spark (part of the Alibaba Cloud Spark offering)

Answer

DataWorks Spark node