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AWS Certified Associate Data-Engineer-Associate Book

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Question 12

A telecommunications company collects network usage data throughout each day at a rate of several thousand data points each second. The company runs an application to process the usage data in real time. The company aggregates and stores the data in an Amazon Aurora DB instance.

Sudden drops in network usage usually indicate a network outage. The company must be able to identify sudden drops in network usage so the company can take immediate remedial actions.

Which solution will meet this requirement with the LEAST latency?

Options:

A.

Create an AWS Lambda function to query Aurora for drops in network usage. Use Amazon EventBridge to automatically invoke the Lambda function every minute.

B.

Modify the processing application to publish the data to an Amazon Kinesis data stream. Create an Amazon Managed Service for Apache Flink (previously known as Amazon Kinesis Data Analytics) application to detect drops in network usage.

C.

Replace the Aurora database with an Amazon DynamoDB table. Create an AWS Lambda function to query the DynamoDB table for drops in network usage every minute. Use DynamoDB Accelerator (DAX) between the processing application and DynamoDB table.

D.

Create an AWS Lambda function within the Database Activity Streams feature of Aurora to detect drops in network usage.

Question 13

A company receives .csv files that contain physical address data. The data is in columns that have the following names: Door_No, Street_Name, City, and Zip_Code. The company wants to create a single column to store these values in the following format:

Which solution will meet this requirement with the LEAST coding effort?

Options:

A.

Use AWS Glue DataBrew to read the files. Use the NEST TO ARRAY transformation to create the new column.

B.

Use AWS Glue DataBrew to read the files. Use the NEST TO MAP transformation to create the new column.

C.

Use AWS Glue DataBrew to read the files. Use the PIVOT transformation to create the new column.

D.

Write a Lambda function in Python to read the files. Use the Python data dictionary type to create the new column.

Question 14

A company analyzes data in a data lake every quarter to perform inventory assessments. A data engineer uses AWS Glue DataBrew to detect any personally identifiable information (PII) about customers within the data. The company's privacy policy considers some custom categories of information to be PII. However, the categories are not included in standard DataBrew data quality rules.

The data engineer needs to modify the current process to scan for the custom PII categories across multiple datasets within the data lake.

Which solution will meet these requirements with the LEAST operational overhead?

Options:

A.

Manually review the data for custom PII categories.

B.

Implement custom data quality rules in Data Brew. Apply the custom rules across datasets.

C.

Develop custom Python scripts to detect the custom PII categories. Call the scripts from DataBrew.

D.

Implement regex patterns to extract PII information from fields during extract transform, and load (ETL) operations into the data lake.

Question 15

A company loads transaction data for each day into Amazon Redshift tables at the end of each day. The company wants to have the ability to track which tables have been loaded and which tables still need to be loaded.

A data engineer wants to store the load statuses of Redshift tables in an Amazon DynamoDB table. The data engineer creates an AWS Lambda function to publish the details of the load statuses to DynamoDB.

How should the data engineer invoke the Lambda function to write load statuses to the DynamoDB table?

Options:

A.

Use a second Lambda function to invoke the first Lambda function based on Amazon CloudWatch events.

B.

Use the Amazon Redshift Data API to publish an event to Amazon EventBridqe. Configure an EventBridge rule to invoke the Lambda function.

C.

Use the Amazon Redshift Data API to publish a message to an Amazon Simple Queue Service (Amazon SQS) queue. Configure the SQS queue to invoke the Lambda function.

D.

Use a second Lambda function to invoke the first Lambda function based on AWS CloudTrail events.

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Exam Name: AWS Certified Data Engineer - Associate (DEA-C01)
Last Update: Nov 23, 2024
Questions: 130
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