Vendor: Amazon
Exam Code: DAS-C01
Exam Name: AWS Certified Data Analytics - Specialty (DAS-C01)
Certification: Amazon Certifications
Total Questions: 285 Q&A
Updated on: Jun 07, 2026
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A financial company uses Amazon S3 as its data lake and has set up a data warehouse using a multi-node Amazon Redshift cluster. The data files in the data lake are organized in folders based on the data source of each data file. All the data files are loaded to one table in the Amazon Redshift cluster using a separate COPY command for each data file location. With this approach, loading all the data files into Amazon Redshift takes a long time to complete. Users want a faster solution with little or no increase in cost while maintaining the segregation of the data files in the S3 data lake.
Which solution meets these requirements?
A. Use Amazon EMR to copy all the data files into one folder and issue a COPY command to load the data into Amazon Redshift.
B. Load all the data files in parallel to Amazon Aurora, and run an AWS Glue job to load the data into Amazon Redshift.
C. Use an AWS Glue job to copy all the data files into one folder and issue a COPY command to load the data into Amazon Redshift.
D. Create a manifest file that contains the data file locations and issue a COPY command to load the data into Amazon Redshift.
A retail company stores order invoices in an Amazon OpenSearch Service (Amazon Elasticsearch Service) cluster Indices on the cluster are created monthly. Once a new month begins, no new writes are made to any of the indices from the previous months. The company has been expanding the storage on the Amazon OpenSearch Service (Amazon Elasticsearch Service) cluster to avoid running out of space, but the company wants to reduce costs. Most searches on the cluster are on the most recent 3 months of data, while the audit team requires infrequent access to older data to generate periodic reports. The most recent 3 months of data must be quickly available for queries, but the audit team can tolerate slower queries if the solution saves on cluster costs
Which of the following is the MOST operationally efficient solution to meet these requirements?
A. Archive indices that are older than 3 months by using Index State Management (ISM) to create a policy to store the indices in Amazon S3 Glacier. When the audit team requires the archived data, restore the archived indices back to the Amazon OpenSearch Service (Amazon Elasticsearch Service) cluster.
B. Archive indices that are older than 3 months by taking manual snapshots and storing the snapshots in Amazon S3. When the audit team requires the archived data, restore the archived indices back to the Amazon OpenSearch Service (Amazon Elasticsearch Service) cluster.
C. Archive indices that are older than 3 months by using Index State Management (ISM) to create a policy to migrate the indices to Amazon OpenSearch Service (Amazon Elasticsearch Service) UltraWarm storage.
D. Archive indices that are older than 3 months by using Index State Management (ISM) to create a policy to migrate the indices to Amazon OpenSearch Service (Amazon Elasticsearch Service) UltraWarm storage. When the audit team requires the older data, migrate the indices in UltraWarm storage back to hot storage.
An online retail company maintains an on-premises MySQL database of customer transactions. The company has selected Amazon Redshift as the data warehouse for its data analytics on AWS. To provide relevant purchase recommendations, the company needs to ensure that new customer transactions are inserted into Amazon Redshift in near-real time.
What is the MOST cost-effective way to replicate this data into Amazon Redshift?
A. Query new transactions from the on-premises database, and upload them to an Amazon S3 bucket. Use AWS Glue and issue COPY statements to write the data into an Amazon Redshift table.
B. Create an Amazon Kinesis data stream, and select an Amazon Redshift table as the target. Change the application code to put new customer records into the Kinesis data stream.
C. Use AWS Database Migration Service (AWS DMS) to migrate a full export of the on-premises database to Amazon S3. Submit a job to an Amazon EMR cluster to query the incremental changes between exports. Load the incremental changes into an Amazon Redshift table.
D. Use AWS Database Migration Service (AWS DMS) to create an ongoing migration task to replicate new transactions from the on-premises database to an Amazon Redshift table.
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