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| Section | Weight | Objectives |
|---|---|---|
| Data Store Management | 26% | - Choose a data store
|
| Data Security and Governance | 18% | - Apply authentication and authorization
|
| Data Operations and Support | 22% | - Manage and troubleshoot data processes
|
| Data Ingestion and Transformation | 34% | - Perform data ingestion
|
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NEW QUESTION # 46
A company is planning to upgrade its Amazon Elastic Block Store (Amazon EBS) General Purpose SSD storage from gp2 to gp3. The company wants to prevent any interruptions in its Amazon EC2 instances that will cause data loss during the migration to the upgraded storage.
Which solution will meet these requirements with the LEAST operational overhead?
Answer: D
Explanation:
Changing the volume type of the existing gp2 volumes to gp3 is the easiest and fastest way to migrate to the new storage type without any downtime or data loss. You can use the AWS Management Console, the AWS CLI, or the Amazon EC2 API to modify the volume type, size, IOPS, and throughput of your gp2 volumes.
The modification takes effect immediately, and you can monitor the progress of the modification using CloudWatch. The other options are either more complex or require additional steps, such as creating snapshots, transferring data, or attaching new volumes, which can increase the operational overhead and the risk of errors. References:
Migrating Amazon EBS volumes from gp2 to gp3 and save up to 20% on costs (Section: How to migrate from gp2 to gp3) Switching from gp2 Volumes to gp3 Volumes to Lower AWS EBS Costs (Section: How to Switch from GP2 Volumes to GP3 Volumes) Modifying the volume type, IOPS, or size of an EBS volume - Amazon Elastic Compute Cloud (Section: Modifying the volume type)
NEW QUESTION # 47
A company uses Amazon Redshift as its data warehouse. Data encoding is applied to the existing tables of the data warehouse. A data engineer discovers that the compression encoding applied to some of the tables is not the best fit for the data. The data engineer needs to improve the data encoding for the tables that have sub- optimal encoding.
Which solution will meet this requirement?
Answer: D
Explanation:
Option B is correct because ANALYZE COMPRESSION is the Amazon Redshift command specifically used to evaluate existing table data and recommend better compression encodings for columns. AWS states that ANALYZE COMPRESSION performs compression analysis and produces a report with the suggested compression encoding for the tables analyzed. AWS also states that when you already have data in an existing table, you can use ANALYZE COMPRESSION to view the recommended encodings for that table.
Option A is incorrect because the standard ANALYZE command updates optimizer statistics; it does not recommend column compression settings. Options C and D are vacuum operations related to sorting, reclaiming space, or clustering behavior, not choosing better compression encodings. AWS also notes that Redshift supports automatic encoding management with ENCODE AUTO, but when the question asks how to improve encoding for existing suboptimal tables, the direct diagnostic command is ANALYZE COMPRESSION.
Also, once you finish this review set, consider using the Djamgatech App for deeper DEA-C01 prep and practice tests: iOS, Web, Android, and Microsoft Store editions are available. For job opportunities related to Data Engineering certification, a strong platform to use is LinkedIn Jobs.
NEW QUESTION # 48
A company has a data processing pipeline that includes several dozen steps. The data processing pipeline needs to send alerts in real time when a step fails or succeeds. The data processing pipeline uses a combination of Amazon S3 buckets, AWS Lambda functions, and AWS Step Functions state machines.
A data engineer needs to create a solution to monitor the entire pipeline.
Which solution will meet these requirements?
Answer: C
Explanation:
AWS Step Functions natively emits state change events to Amazon EventBridge, which can trigger an Amazon SNS notification. This is the most direct and real-time way to alert on success/failure without relying on custom logging or polling.
"Step Functions automatically emits status changes that EventBridge can capture to trigger alerts or workflows. Use EventBridge to invoke an SNS topic for real-time alerts on job status."
- Ace the AWS Certified Data Engineer - Associate Certification - version 2 - apple.pdf This provides real-time alerting and the least operational overhead.
NEW QUESTION # 49
A company implements a data mesh that has a central governance account. The company needs to catalog all data in the governance account. The governance account uses AWS Lake Formation to centrally share data and grant access permissions.
The company has created a new data product that includes a group of Amazon Redshift Serverless tables. A data engineer needs to share the data product with a marketing team. The marketing team must have access to only a subset of columns. The data engineer needs to share the same data product with a compliance team.
The compliance team must have access to a different subset of columns than the marketing team needs access to.
Which combination of steps should the data engineer take to meet these requirements? (Select TWO.)
Answer: D,E
Explanation:
The company is using a data mesh architecture with AWS Lake Formation for governance and needs to share specific subsets of data with different teams (marketing and compliance) using Amazon Redshift Serverless.
* Option A: Create views of the tables that need to be shared. Include only the required columns.
Creating views in Amazon Redshift that include only the necessary columns allows for fine-grained access control. This method ensures that each team has access to only the data they are authorized to view.
* Option E: Share the Amazon Redshift data share to the Amazon Redshift Serverless workgroup in the marketing team's account.Amazon Redshift data sharing enables live access to data across Redshift clusters or Serverless workgroups. By sharing data with specific workgroups, you can ensure that the marketing team and compliance team each access the relevant subset of data based on the views created.
* Option B (creating a Redshift data share) is close but does not address the fine-grained column-level access.
* Option C (creating a managed VPC endpoint) is unnecessary for sharing data with specific teams.
* Option D (sharing with the Lake Formation catalog) is incorrect because Redshift data shares do not integrate directly with Lake Formation catalogs; they are specific to Redshift workgroups.
References:
* Amazon Redshift Data Sharing
* AWS Lake Formation Documentation
NEW QUESTION # 50
A data engineer must implement a data cataloging solution to track schema changes in an Amazon Redshift table.
Which solution will meet these requirements?
Answer: B
Explanation:
Option A is correct because AWS Glue crawlers are the AWS-native service for discovering metadata and updating the AWS Glue Data Catalog. AWS documentation says that crawlers can crawl data stores, infer schema, and upon completion create or update tables in the Data Catalog. For schema-change tracking on an Amazon Redshift table, the crawler can connect through JDBC, inspect the table metadata, and update the Glue Data Catalog on a schedule. This directly satisfies the requirement to implement a cataloging solution that tracks schema changes over time.
Option B is incorrect because AWS DataSync is for data transfer, not metadata cataloging. Option C is also incorrect because AWS SCT is intended for schema conversion and migration assessments, not ongoing catalog synchronization into a Hive metastore for this use case. Option D is not the best answer because the requirement is for an AWS cataloging solution, and the standard managed catalog service here is the AWS Glue Data Catalog, not an external Apache Hive metastore. The daily scheduled crawler against Redshift with Glue Data Catalog updates is the most direct and exam-aligned solution for tracking schema changes.
NEW QUESTION # 51
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