Amazon-DAS-C01-AWS Certified Data Analytics – Specialty (DAS-C01) Free Practice Test — 30 Questions

Question 1

Sarah is managing an Amazon Redshift cluster for her organization. The current cluster is struggling with performance during peak hours due to an increase in concurrent users and queries. Sarah needs to improve the cluster performance without affecting the ongoing operations.
What should Sarah do to handle this situation?

Accepted Answer

Enable concurrency scaling on the existing cluster.

Question 2

Which distribution style should be used for a frequently joined table in Amazon Redshift to optimize query performance?

Accepted Answer

ALL distribution

Question 3

Tom is configuring workload management (WLM) for his Amazon Redshift cluster. He wants to ensure that critical queries get higher priority and resources compared to other less important queries.
How can Tom achieve this?

Accepted Answer

Configure a separate WLM queue for critical queries with more memory and slots.

Question 4

Which statement is true about setting up an Amazon Athena database and tables?

Accepted Answer

You can create an Athena table using a SQL DDL statement.

Question 5

Jessica is optimizing her Athena queries by using partitions. Her data is stored in Amazon S3 in Parquet format, partitioned by the year, month, and day columns.

Accepted Answer

SELECT * FROM my_table WHERE year = '2023' AND month = '05' AND day = '15'

Question 6

Michael needs to manage metadata for various datasets stored in Amazon S3. He wants to ensure that the metadata is consistently updated and available for multiple AWS services like Athena and Redshift Spectrum.
What is the best approach for Michael to manage this metadata?

Accepted Answer

Use the AWS Glue Data Catalog.

Question 7

Which feature of Amazon Quick Sight allows for efficient handling of large datasets by using a super-fast, in-memory calculation engine?

Accepted Answer

SPICE

Question 8

Emily is using Amazon QuickSight for advanced analytics. She wants to predict future sales trends based on historical data.
Which feature should Emily use in Quick Sight to achieve this?

Accepted Answer

ML Insights

Question 9

David needs to share an Amazon Quick Sight dashboard with external stakeholders securely.
What is the best way to achieve this?

Accepted Answer

Embed the dashboard in a web application with appropriate permissions.

Question 10

Lisa is creating an interactive geospatial map in Amazon QuickSight to visualize customer locations across the country.
Which data format should Lisa use to ensure accurate and efficient rendering of geospatial data?

Accepted Answer

Shapefile

Question 11

Mr. Johnson is working on a project that requires processing streaming data from IoT sensors deployed in various locations. The data needs to be ingested and processed in real-time to trigger alerts for anomalous readings. Which AWS service should Mr. Johnson use to achieve real-time data ingestion and processing?

Accepted Answer

Amazon Kinesis Data Streams

Question 12

Ms. Lee is responsible for managing large datasets that require efficient storage solutions with different access needs over time. Initially, the data needs to be frequently accessed, but over time, it will be accessed less frequently and eventually archived. Which AWS service and feature combination should she consider for this data lifecycle management?

Accepted Answer

Amazon S3 with Intelligent-Tiering

Question 13

Mr. Gomez needs to transfer sensitive customer data from his on-premises data center to AWS. Security and compliance with data protection regulations are critical. Which method should he choose to ensure secure data transfer?

Accepted Answer

AWS Direct Connect

Question 14

Mrs. Carter is designing a data ingestion system with high throughput and low latency requirements. The data is being ingested from multiple sources and needs to be immediately available for processing. Which design consideration is most critical for her system?

Accepted Answer

Minimizing data latency

Question 15

Dr. Patel is storing sensitive medical research data in AWS. To comply with regulatory requirements, she needs to ensure the data is encrypted both at rest and in transit. Which AWS services and features should she use?

Accepted Answer

Amazon S3 with Server-Side Encryption (SSE) and AWS KMS

Question 16

Mr. Anderson is developing a financial trading platform that requires both real-time analytics for live trading data and batch processing for end-of-day reporting. Which AWS services should he use for each requirement?

Accepted Answer

Real-time: Amazon Kinesis Data Streams, Batch: Amazon EMR

Question 17

Ms. Rivera is transferring a large dataset to AWS. She wants to ensure the process is both efficient and secure. Which best practices should she follow?

Accepted Answer

Use AWS Snowball and encrypt data before transfer

Question 18

Dr. Nguyen needs a scalable storage solution for large volumes of unstructured data that requires infrequent access but must remain quickly retrievable when needed. Which AWS storage service should she choose?

Accepted Answer

Amazon S3 Glacier

Question 19

Mr. Smith is migrating his company’s on-premises database to Amazon RDS. He wants to minimize downtime during the migration. Which AWS service can help him achieve this?

Accepted Answer

AWS Data Migration Service (DMS)

Question 20

Ms. Clark is storing sensitive customer data on Amazon S3. She needs to ensure compliance with regulatory requirements such as GDPR. Which measures should she implement?

Accepted Answer

Use S3 Server-Side Encryption with AWS KMS and enable S3 Access Logs

Question 21

Mr. Johnson is tasked with designing a scalable data lake for his company using AWS services. He needs to ensure the data lake can handle a variety of data sources and formats, support high availability, and provide efficient querying capabilities. Which AWS service should Mr. Johnson primarily use to build the data lake?

Accepted Answer

Amazon S3

Question 22

Ms. Thompson is implementing AWS Lake Formation to manage access controls and data cataloging in her company\'s data lake. Which feature of AWS Lake Formation allows her to centrally manage permissions for multiple AWS services?

Accepted Answer

Lake Formation Permissions

Question 23

Mr. Lee is responsible for organizing and cataloging data in his company’s data lake. What is the best practice he should follow to ensure efficient data discovery and management?

Accepted Answer

Use AWS Glue Data Catalog

Question 24

Which of the following scenarios is most suitable for batch processing rather than stream processing?

Accepted Answer

Hourly aggregation of sales data for a daily report

Question 25

Which AWS service is specifically designed for orchestrating complex workflows involving multiple steps and AWS services in a data processing pipeline?

Accepted Answer

AWS Step Functions

Question 26

Dr. Patel is working on a big data project that requires distributed data processing. She decides to use Apache Spark. What is the primary advantage of using Apache Spark over traditional MapReduce?

Accepted Answer

Real-time data processing capabilities

Question 27

What is a primary consideration when designing an ETL job to ensure it performs efficiently in a large-scale data processing environment?

Accepted Answer

Optimizing data partitioning and parallelism

Question 28

Which AWS Glue feature allows users to automatically generate code to perform ETL operations?

Accepted Answer

Glue ETL Jobs

Question 29

Mr. Rivera needs to run interactive SQL queries on his data stored in Amazon S3 without loading the data into a database. Which AWS service should he use?

Accepted Answer

Amazon Athena

Question 30

Ms. Garcia is designing an ETL pipeline for a high-volume data processing task. To ensure fault tolerance and scalability, what architecture should she consider?

Accepted Answer

Serverless

Amazon-DAS-C01-AWS Certified Data Analytics – Specialty (DAS-C01) Free Practice Test — 30 Questions

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