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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design High-Performing Architectures | 24% | - Determine high-performing and/or scalable network architectures
|
| Topic 2: Design Secure Architectures | 30% | - Design secure access to AWS resources
|
| Topic 3: Design Cost-Optimized Architectures | 20% | - Design cost-optimized compute solutions
|
| Topic 4: Design Resilient Architectures | 26% | - Design highly available and/or fault-tolerant architectures
|
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NEW QUESTION # 442
A company is moving its on-premises Oracle database to Amazon Aurora PostgreSQL. The database has several applications that write to the same tables. The applications need to be migrated one by one with a month in between each migration. Management has expressed concerns that the database has a high number of reads and writes. The data must be kept in sync across both databases throughout the migration.
What should a solutions architect recommend?
Answer: D
Explanation:
The correct recommendation is to useAWS Schema Conversion Tool AWS SCTtogether withAWS DMSand run afull load plus CDCmigration so Oracle and Aurora PostgreSQL stay synchronized during the staged application cutover. AWS prescriptive guidance for Oracle-to-Aurora PostgreSQL migration explicitly uses AWS SCT and AWS DMS for this pattern. Because the source workload has a high number of reads and writes, amemory-optimized replication instanceis the stronger fit for heavy replication activity. DataSync is not the service used for relational database migration. Selecting only the largest tables would not satisfy the requirement to keep all application data synchronized across the whole migration window.
NEW QUESTION # 443
[Design Secure Architectures]
A solutions architect is designing a customer-facing application for a company. The application's database will have a clearly defined access pattern throughout the year and will have a variable number of reads and writes that depend on the time of year. The company must retain audit records for the database for 7 days. The recovery point objective (RPO) must be less than 5 hours.
Which solution meets these requirements?
Answer: D
Explanation:
This solution meets the requirements of a customer-facing application that has a clearly defined access pattern throughout the year and a variable number of reads and writes that depend on the time of year. Amazon DynamoDB is a fully managed NoSQL database service that can handle any level of request traffic and data size. DynamoDB auto scaling can automatically adjust the provisioned read and write capacity based on the actual workload. DynamoDB on-demand backups can create full backups of the tables for data protection and archival purposes. DynamoDB Streams can capture a time-ordered sequence of item-level modifications in the tables for audit purposes.
Option B is incorrect because Amazon Redshift is a data warehouse service that is designed for analytical workloads, not for customer-facing applications. Option C is incorrect because Amazon RDS with Provisioned IOPS can provide consistent performance for relational databases, but it may not be able to handle unpredictable spikes in traffic and data size. Option D is incorrect because Amazon Aurora MySQL with auto scaling can provide high performance and availability for relational databases, but it does not support audit logging as a parameter.
Reference:
https://aws.amazon.com/dynamodb/
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/AutoScaling.html
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/BackupRestore.html
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html
NEW QUESTION # 444
A company is designing an application to run in a VPC on AWS. The application consists of Amazon EC2 instances that run in private subnets as part of an Auto Scaling group. The application stores data in an Amazon RDS DB instance.
The company attaches a security group named web-servers to the EC2 instances. The company attaches a security group named database to the DB instance.
The company needs a solution to establish communication between the EC2 instances and the DB instance.
Which solution will meet this requirement?
Answer: D
Explanation:
The correct security-group design is to allow inbound database access from the EC2 instances' security group rather than from individual IP addresses. AWS security groups can reference another security group as the source, which is the scalable and recommended approach for application-to- database communication in dynamic environments such as Auto Scaling groups.
That way, newly launched instances automatically inherit access without requiring IP-based rule updates. Option A is brittle because private IPs change as instances scale. Option C is not how security-group rules are defined, and option D reverses the traffic direction. Therefore, allowing the database security group to accept traffic from the web-servers security group is the right architecture.
NEW QUESTION # 445
A solutions architect is using Amazon EC2 instances to host an application. The solutions architect needs to grant permissions for the application to access an Amazon DynamoDB table.
Which solution will meet this requirement?
Answer: D
Explanation:
The correct solution is to create anIAM roleand attach it to the EC2 instance profile. AWS documentation states that applications running on EC2 should use IAM roles so the instance can receivetemporary credentials automaticallythrough the instance metadata service. This avoids embedding long-term access keys in code or on the server. DynamoDB supports IAM and temporary credentials, so the application can use the role's permissions to access the table securely. EC2 key pairs are only for SSH access and have nothing to do with DynamoDB authorization. IAM users and long-term access keys are less secure and create unnecessary credential management overhead.
NEW QUESTION # 446
A company uses on-premises virtual machines VMs to run a Kubernetes cluster. The company must operate network connectivity for the cluster on premises. The company wants to simplify overall management for the Kubernetes cluster while maintaining control over the underlying infrastructure. Which solution will meet these requirements?
Answer: D
Explanation:
Amazon EKS Anywhere is the best fit because it is specifically designed to run Kubernetes on customer- managed infrastructure in on-premises and edge environments while simplifying cluster lifecycle management. AWS states that EKS Anywhere helps automate cluster management on your own infrastructure, which matches the requirement to keep network connectivity and underlying infrastructure on premises. By contrast, EKS on Outposts moves the platform to AWS Outposts hardware, and the self-hosted options increase operational burden because the company would still manage the Kubernetes platform itself.
The key distinction here is that the company wants simpler management without giving up control of its current on-premises environment. EKS Anywhere is the AWS service built for exactly that balance.
NEW QUESTION # 447
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