AWS Certified Big Data - Specialty

Here you have the best Amazon BDS-C00 practice exam questions

  • You have 85 total questions across 17 pages (5 per page)
  • These questions were last updated on March 9, 2026
  • This site is not affiliated with or endorsed by Amazon.
Question 1 of 85

A data engineer in a manufacturing company is designing a data processing platform that receives a large volume of unstructured data. The data engineer must populate a well-structured star schema in Amazon
Redshift.
What is the most efficient architecture strategy for this purpose?
Answer

Suggested Answer

The suggested answer is A.

Transforming the unstructured data using Amazon EMR and generating CSV data is the most efficient architecture strategy. This approach allows for the powerful processing capabilities of EMR to handle large volumes of unstructured data and turn it into a well-structured format (CSV). Once the data is in CSV format, it can be efficiently loaded into Amazon Redshift using the COPY command, which is optimized for bulk data ingestion. This method avoids the performance and complexity issues inherent in loading unstructured data directly into Redshift or attempting to transform it within a Lambda function.

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Question 2 of 85

A new algorithm has been written in Python to identify SPAM e-mails. The algorithm analyzes the free text contained within a sample set of 1 million e-mails stored on Amazon S3. The algorithm must be scaled across a production dataset of 5 PB, which also resides in Amazon S3 storage.
Which AWS service strategy is best for this use case?
Answer

Suggested Answer

The suggested answer is B.

Amazon EMR (Elastic MapReduce) is the most appropriate choice for analyzing a massive dataset like 5 PB. Amazon EMR allows for the parallel processing of large data volumes using distributed data frameworks such as Apache Hadoop and Apache Spark. These frameworks can be used to run complex algorithms, including text analysis, in a highly scalable manner. By using EMR, the text analysis tasks can be effectively parallelized across a large cluster of instances, making it possible to handle the large scale of data efficiently. Other options like Amazon Elasticsearch Service or ElastiCache do not scale well to handle a dataset of this size.

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Question 3 of 85

A data engineer chooses Amazon DynamoDB as a data store for a regulated application. This application must be submitted to regulators for review. The data engineer needs to provide a control framework that lists the security controls from the process to follow to add new users down to the physical controls of the data center, including items like security guards and cameras.
How should this control mapping be achieved using AWS?
Answer

Suggested Answer

The suggested answer is A.

To provide a control framework that lists security controls for a regulated application, it is necessary to leverage AWS's independent third-party audit reports. These reports, such as AWS System and Organization Controls (SOC) Reports, demonstrate how AWS meets key compliance controls and objectives. By requesting these reports, one can map AWS's responsibilities to the necessary security controls, including both the processes for adding new users and the physical controls in data centers, like security guards and cameras. This method ensures a comprehensive and verified approach to satisfying regulatory requirements.

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Question 4 of 85

An administrator needs to design a distribution strategy for a star schema in a Redshift cluster. The administrator needs to determine the optimal distribution style for the tables in the Redshift schema.
In which three circumstances would choosing Key-based distribution be most appropriate? (Select three.)
Answer

Suggested Answer

The suggested answer is B, D, E.

Key-based distribution is most appropriate when the administrator needs to reduce cross-node traffic, balance data distribution and collocation data, and take advantage of data locality on a local node for joins and aggregates. This distribution style helps to ensure that rows with the same key value are stored on the same node, minimizing the amount of data that needs to be transferred between nodes during query execution, and thereby optimizing the performance of joins and aggregations on large datasets.

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Question 5 of 85

Company A operates in Country X. Company A maintains a large dataset of historical purchase orders that contains personal data of their customers in the form of full names and telephone numbers. The dataset consists of 5 text files, 1TB each. Currently the dataset resides on-premises due to legal requirements of storing personal data in-country. The research and development department needs to run a clustering algorithm on the dataset and wants to use Elastic Map Reduce service in the closest AWS region. Due to geographic distance, the minimum latency between the on-premises system and the closet AWS region is 200 ms.
Which option allows Company A to do clustering in the AWS Cloud and meet the legal requirement of maintaining personal data in-country?
Answer

Suggested Answer

The suggested answer is A.

Anonymizing the personal data portions of the dataset and transferring the data files into Amazon S3 in the AWS region allows Company A to meet the legal requirement of maintaining personal data in-country. Anonymized data does not fall under the same legal restrictions as personal data, so moving it out of the country for processing is permissible. The research and development department can run the clustering algorithm using Amazon EMR, which will read the dataset using EMRFS from S3. This approach avoids the high latency issues that would arise from directly reading the data over the network.

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About the Amazon BDS-C00 Certification Exam

About the Exam

The Amazon BDS-C00 (AWS Certified Big Data - Specialty) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 85 practice questions across 17 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our BDS-C00 questions are regularly updated to reflect the latest exam objectives.