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Amazon BDS-C00

AWS Certified Big Data - Specialty

Verified practice questions with detailed answers, clear explanations, and community discussion.

  • 85

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  • 10 days ago

    last updated

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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 choices
Show answer

Correct answer: 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.

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 choices
Show answer

Correct answer: 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.

Community votes

1 vote

BSuggested

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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 choices
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Correct answer: 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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1 vote

ASuggested

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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 choices
Show answer

Correct answers: 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.

Community votes

1 vote

BDESuggested

100%

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 choices
Show answer

Correct answer: 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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1 vote

ASuggested

100%

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Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
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Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
Gabriele Ghesla
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The content is accurate and clearly presented, and it's more affordable than competitors. The team has been incredibly responsive whenever I've had an issue, and they've been open to small changes that improve the platform.
Charles Sirois
Canada
As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
Lance Chambers
United States
Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
Italy
Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
Netherlands
Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
Gabriele Ghesla
Italy
The content is accurate and clearly presented, and it's more affordable than competitors. The team has been incredibly responsive whenever I've had an issue, and they've been open to small changes that improve the platform.
Morgan Farmer
United Kingdom
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
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Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.
Morgan Farmer
United Kingdom
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

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