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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Operations and Support | 22% | - Ensure reliability and scalability - Monitor and troubleshoot data pipelines
- Automate operational tasks |
| Topic 2: Data Ingestion and Transformation | 34% | - Ingest data from various sources
- Transform and enrich data
|
| Topic 3: Data Store Management | 26% | - Manage data lifecycle and storage tiers - Design and implement data storage solutions
|
| Topic 4: Data Security and Governance | 18% | - Protect sensitive data - Implement access control and authentication
|
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NEW QUESTION # 208
A company uses Amazon S3 to store data and Amazon QuickSight to create visualizations.
The company has an S3 bucket in an AWS account named Hub-Account. The S3 bucket is encrypted with an AWS Key Management Service (AWS KMS) key. The company's Amazon QuickSight instance is in a separate AWS account named BI-Account.
The company updates the S3 bucket policy to grant access to the QuickSight service role. The company wants to enable cross-account access to allow QuickSight to interact with the S3 bucket.
Which combination of steps will meet this requirement? (Select TWO)
Answer: C,D
Explanation:
For Amazon QuickSight to access data in an Amazon S3 bucket that is encrypted with an AWS KMS key in a different AWS account, two distinct permissions are required: access to the S3 bucket and access to the KMS key.
First, the QuickSight service role in the BI-Account must be granted permission to access the S3 bucket. This is accomplished by adding the S3 bucket as a resource that the QuickSight service role can access and configuring the bucket policy in the Hub-Account to trust that role. Without explicit S3 permissions, QuickSight cannot read the objects.
Second, because the S3 bucket uses SSE-KMS encryption, QuickSight must also be authorized to use the KMS key. This requires adding an IAM policy to the QuickSight service role that allows kms:Decrypt and related permissions on the KMS key. Without KMS permissions, S3 access will fail even if the bucket policy allows access.
AWS RAM cannot be used to share S3 buckets, encryption of network connections is irrelevant to KMS permissions, and adding the KMS key as a "resource" alone is not sufficient without IAM permissions.
Therefore, Options B and D are correct.
NEW QUESTION # 209
A data engineer is building an automated extract, transform, and load (ETL) ingestion pipeline by using AWS Glue. The pipeline ingests compressed files that are in an Amazon S3 bucket. The ingestion pipeline must support incremental data processing.
Which AWS Glue feature should the data engineer use to meet this requirement?
Answer: D
Explanation:
* Problem Analysis:
* The pipeline processescompressed filesin S3 and must supportincremental data processing.
* AWS Glue features must facilitatetracking progressto avoid reprocessing the same data.
* Key Considerations:
* Incremental data processing requires tracking which files or partitions have already been processed.
* The solution must be automated and efficient for large-scale ETL jobs.
* Solution Analysis:
* Option A: Workflows
* Workflows organize and orchestrate multiple Glue jobs but do not track progress for incremental data processing.
* Option B: Triggers
* Triggers initiate Glue jobs based on a schedule or events but do not track which data has been processed.
* Option C: Job Bookmarks
* Job bookmarks track the state of the data that has been processed, enabling incremental processing.
* Automatically skip files or partitions that were previously processed in Glue jobs.
* Option D: Classifiers
* Classifiers determine the schema of incoming data but do not handle incremental processing.
* Final Recommendation:
* Job bookmarksare specifically designed to enable incremental data processing in AWS Glue ETL pipelines.
:
AWS Glue Job Bookmarks Documentation
AWS Glue ETL Features
NEW QUESTION # 210
A car sales company maintains data about cars that are listed for sale in an are a. The company receives data about new car listings from vendors who upload the data daily as compressed files into Amazon S3. The compressed files are up to 5 KB in size. The company wants to see the most up-to-date listings as soon as the data is uploaded to Amazon S3.
A data engineer must automate and orchestrate the data processing workflow of the listings to feed a dashboard. The data engineer must also provide the ability to perform one-time queries and analytical reporting. The query solution must be scalable.
Which solution will meet these requirements MOST cost-effectively?
Answer: D
Explanation:
For processing the incoming car listings in a cost-effective, scalable, and automated way, the ideal approach involves using AWS Glue for data processing, AWS Lambda with S3 Event Notifications for orchestration, Amazon Athena for one-time queries and analytical reporting, and Amazon QuickSight for visualization on the dashboard. Let's break this down:
AWS Glue: This is a fully managed ETL (Extract, Transform, Load) service that automatically processes the incoming data files. Glue is serverless and supports diverse data sources, including Amazon S3 and Redshift.
AWS Lambda and S3 Event Notifications: Using Lambda and S3 Event Notifications allows near real-time triggering of processing workflows as soon as new data is uploaded into S3. This approach is event-driven, ensuring that the listings are processed as soon as they are uploaded, reducing the latency for data processing.
Amazon Athena: A serverless, pay-per-query service that allows interactive queries directly against data in S3 using standard SQL. It is ideal for the requirement of one-time queries and analytical reporting without the need for provisioning or managing servers.
Amazon QuickSight: A business intelligence tool that integrates with a wide range of AWS data sources, including Athena, and is used for creating interactive dashboards. It scales well and provides real-time insights for the car listings.
This solution (Option D) is the most cost-effective, because both Glue and Athena are serverless and priced based on usage, reducing costs when compared to provisioning EMR clusters in the other options. Moreover, using Lambda for orchestration is more cost-effective than AWS Step Functions due to its lightweight nature.
Reference:
AWS Glue Documentation
Amazon Athena Documentation
Amazon QuickSight Documentation
S3 Event Notifications and Lambda
NEW QUESTION # 211
A company uses Amazon S3 buckets, AWS Glue tables, and Amazon Athena as components of a data lake.
Recently, the company expanded its sales range to multiple new states. The company wants to introduce state names as a new partition to the existing S3 bucket, which is currently partitioned by date.
The company needs to ensure that additional partitions will not disrupt daily synchronization between the AWS Glue Data Catalog and the S3 buckets.
Which solution will meet these requirements with the LEAST operational overhead?
Answer: B
Explanation:
Explanation: Scheduling an AWS Glue crawler to periodically update the Data Catalog automates the process of detecting new partitions and updating the catalog, which minimizes manual maintenance and operational overhead.
NEW QUESTION # 212
A company receives a data file from a partner each day in an Amazon S3 bucket. The company uses a daily AW5 Glue extract, transform, and load (ETL) pipeline to clean and transform each data file. The output of the ETL pipeline is written to a CSV file named Dairy.csv in a second 53 bucket.
Occasionally, the daily data file is empty or is missing values for required fields. When the file is missing data, the company can use the previous day's CSV file.
A data engineer needs to ensure that the previous day's data file is overwritten only if the new daily file is complete and valid.
Which solution will meet these requirements with the LEAST effort?
Answer: D
Explanation:
Problem Analysis:
The company runs a daily AWS Glue ETL pipeline to clean and transform files received in an S3 bucket.
If a file is incomplete or empty, the previous day's file should be retained.
Need a solution to validate files before overwriting the existing file.
Key Considerations:
Automate data validation with minimal human intervention.
Use built-in AWS Glue capabilities for ease of integration.
Ensure robust validation for missing or incomplete data.
Solution Analysis:
Option A: Lambda Function for Validation
Lambda can validate files, but it would require custom code.
Does not leverage AWS Glue's built-in features, adding operational complexity.
Option B: AWS Glue Data Quality Rules
AWS Glue Data Quality allows defining Data Quality Definition Language (DQDL) rules.
Rules can validate if required fields are missing or if the file is empty.
Automatically integrates into the existing ETL pipeline.
If validation fails, retain the previous day's file.
Option C: AWS Glue Studio with Filling Missing Values
Modifying ETL code to fill missing values with most common values risks introducing inaccuracies.
Does not handle empty files effectively.
Option D: Athena Query for Validation
Athena can drop rows with missing values, but this is a post-hoc solution.
Requires manual intervention to copy the corrected file to S3, increasing complexity.
Final Recommendation:
Use AWS Glue Data Quality to define validation rules in DQDL for identifying missing or incomplete data.
This solution integrates seamlessly with the ETL pipeline and minimizes manual effort.
Implementation Steps:
Enable AWS Glue Data Quality in the existing ETL pipeline.
Define DQDL Rules, such as:
Check if a file is empty.
Verify required fields are present and non-null.
Configure the pipeline to proceed with overwriting only if the file passes validation.
In case of failure, retain the previous day's file.
AWS Glue Data Quality Overview
Defining DQDL Rules
AWS Glue Studio Documentation
NEW QUESTION # 213
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