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An ecommerce company uses Amazon DynamoDB as the backend for its payments system. A new regulation requires the company to log all data access requests for financial audits. For this purpose, the company plans to use AWS logging and save logs to Amazon S3 How can a database specialist activate logging on the database?
A retail company uses Amazon Redshift Spectrum to run complex analytical queries on objects that are stored in an Amazon S3 bucket. The objects are joined with multiple dimension tables that are stored in an Amazon Redshift database. The company uses the database to create monthly and quarterly aggregated reports. Users who attempt to run queries are reporting the following error message: error: Spectrum Scan Error: Access throttled Which solution will resolve this error?
A company is about to launch a new product, and test databases must be re-created from production dat a. The company runs its production databases on an Amazon Aurora MySQL DB cluster. A Database Specialist needs to deploy a solution to create these test databases as quickly as possible with the least amount of administrative effort. What should the Database Specialist do to meet these requirements?
A company is due for renewing its database license. The company wants to migrate its 80 TB transactional database system from on-premises to the AWS Cloud. The migration should incur the least possible downtime on the downstream database applications. The company’s network infrastructure has limited network bandwidth that is shared with other applications. Which solution should a database specialist use for a timely migration?
A marketing company is developing an application to track responses to email message campaigns. The company needs a database storage solution that is optimized to work with highly connected dat a. The database needs to limit connections and programmatic access to the data by using IAM policies. Which solution will meet these requirements?
An online bookstore uses Amazon Aurora MySQL as its backend database. After the online bookstore added a popular book to the online catalog, customers began reporting intermittent timeouts on the checkout page. A database specialist determined that increased load was causing locking contention on the database. The database specialist wants to automatically detect and diagnose database performance issues and to resolve bottlenecks faster. Which solution will meet these requirements?
A global digital advertising company captures browsing metadata to contextually display relevant images, pages, and links to targeted users. A single page load can generate multiple events that need to be stored individually. The maximum size of an event is 200 KB and the average size is 10 KB. Each page load must query the user’s browsing history to provide targeting recommendations. The advertising company expects over 1 billion page visits per day from users in the United States, Europe, Hong Kong, and Indi a. The structure of the metadata varies depending on the event. Additionally, the browsing metadata must be written and read with very low latency to ensure a good viewing experience for the users. Which database solution meets these requirements?
A company wants to migrate its existing on-premises Oracle database to Amazon Aurora PostgreSQL. The migration must be completed with minimal downtime using AWS DMS. A Database Specialist must validate that the data was migrated accurately from the source to the target before the cutover. The migration must have minimal impact on the performance of the source database. Which approach will MOST effectively meet these requirements?
A Database Specialist is setting up a new Amazon Aurora DB cluster with one primary instance and three Aurora Replicas for a highly intensive, business-critical application. The Aurora DB cluster has one medium- sized primary instance, one large-sized replica, and two medium sized replicas. The Database Specialist did not assign a promotion tier to the replicas. In the event of a primary failure, what will occur?
A company maintains several databases using Amazon RDS for MySQL and PostgreSQL. Each RDS database generates log files with retention periods set to their default values. The company has now mandated that database logs be maintained for up to 90 days in a centralized repository to facilitate real-time and after- the-fact analyses. What should a Database Specialist do to meet these requirements with minimal effort?

Question 307 - DBS-C01 discussion

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A company has a hybrid environment in which a VPC connects to an on-premises network through an AWS Site-to-Site VPN connection. The VPC contains an application that is hosted on Amazon EC2 instances. The EC2 instances run in private subnets behind an Application Load Balancer (ALB) that is associated with multiple public subnets. The EC2 instances need to securely access an Amazon DynamoDB table.

Which solution will meet these requirements?

A.
Use the internet gateway of the VPC to access the DynamoDB table. Use the ALB to route the traffic to the EC2 instances.
Answers
A.
Use the internet gateway of the VPC to access the DynamoDB table. Use the ALB to route the traffic to the EC2 instances.
B.
Add a NAT gateway in one of the public subnets of the VPC_ Configure the security groups of the EC2 instances to access the DynamoDB table through the NAT gateway
Answers
B.
Add a NAT gateway in one of the public subnets of the VPC_ Configure the security groups of the EC2 instances to access the DynamoDB table through the NAT gateway
C.
Use the Site-to-Site VPN connection to route all DynamoD8 network traffic through the on-premises network infrastructure to access the EC2 instances
Answers
C.
Use the Site-to-Site VPN connection to route all DynamoD8 network traffic through the on-premises network infrastructure to access the EC2 instances
D.
Create a VPC endpoint for DynamoDB_ Assign the endpoint to the route table of the private subnets that contain the EC2 instances.
Answers
D.
Create a VPC endpoint for DynamoDB_ Assign the endpoint to the route table of the private subnets that contain the EC2 instances.
Suggested answer: D

Explanation:

Option D is correct because it meets the requirements of securely accessing a DynamoDB table from EC2 instances in a hybrid environment.A VPC endpoint for DynamoDB enables EC2 instances in a VPC to use their private IP addresses to access DynamoDB with no exposure to the public internet1. The EC2 instances do not require public IP addresses, and do not need an internet gateway, a NAT device, or a virtual private gateway in the VPC. The endpoint policy and the security groups of the EC2 instances can control access to DynamoDB. Traffic between the VPC and DynamoDB does not leave the Amazon network. Assigning the endpoint to the route table of the private subnets that contain the EC2 instances ensures that any requests to DynamoDB from those subnets are routed to the private endpoint within the Amazon network.

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asked 16/09/2024
Ilia Voronkov
41 questions
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