QUESTION: 81

A company that provides economics data dashboards needs to be able to develop software to display rich, interactive, data-driven graphics that run in web browsers and leverages the full stack of web standards (HTML, SVG and CSS).
Which technology provides the most appropriate for this requirement?

D3.js
Python/Jupyter
R Studio
Hue

Answer(s): C

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QUESTION: 82

A customer needs to determine the optimal distribution strategy for the ORDERS fact table in its Redshift schema.
The ORDERS table has foreign key relationships with multiple dimension tables in this schema.
How should the company determine the most appropriate distribution key for the ORDRES table?

Identity the largest and most frequently joined dimension table and ensure that it and the ORDERS table both have EVEN distribution
Identify the target dimension table and designate the key of this dimension table as the distribution key of the ORDERS table
Identity the smallest dimension table and designate the key of this dimension table as the distribution key of ORDERS table
Identify the largest and most frequently joined dimension table and designate the key of this dimension table as the distribution key for the orders table

Answer(s): D

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QUESTION: 83

A company has several teams of analytics. Each team of analysts has their own cluster. The teams need to run SQL queries using Hive, Spark-SQL and Presto with Amazon EMR. The company needs to enable a centralized metadata layer to expose the Amazon S3 objects as tables to the analysts. Which approach meets the requirement for a centralized metadata layer?

EMRFS consistent view with a common Amazon DynamoDB table
Bootstrap action to change the Hive Metastore to an Amazon RDS database
s3distcp with the outputManifest option to generate RDS DDL
naming scheme support with automatic partition discovery from Amazon S3

Answer(s): C

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QUESTION: 84

The department of transportation for a major metropolitan area has placed sensors on roads at key locations around the city. The goal is to analyze the flow of traffic and notifications from emergency services to identity potential issues and to help planners correct trouble spots.
A data engineer needs a scalable and fault-tolerant solution that allows planners to respond to issues within 30 seconds of their occurrence.
Which solution should the data engineer choose?

Collect the sensor data with Amazon Kinesis Firehose and store it in Amazon Redshift for analysis. Collect emergency services events with Amazon SQS and store in Amazon DynamoDB for analysis
Collect the sensor data with Amazon SQS and store in Amazon DynamoDB for analysis. Collect emergency services events with Amazon Kinesis Firehouse and store in Amazon Redshift for analysis
Collect both sensor data and emergency services events with Amazon Kinesis Streams and use Amazon DynamoDB for analysis
Collect both sensor data and emergency services events with Amazon Kinesis Firehouse and use Amazon Redshift for Analysis

Answer(s): A

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QUESTION: 81

QUESTION: 82

QUESTION: 83

QUESTION: 84