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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design Cost-Optimized Architectures | 20% | - Cost management tools
|
| Topic 2: Design High-Performing Architectures | 24% | - Performance scaling
|
| Topic 3: Design Secure Architectures | 30% | - Secure access to AWS resources
|
| Topic 4: Design Resilient Architectures | 26% | - Highly available architecture
|
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NEW QUESTION # 864
A company stores sensitive financial reports in an Amazon S3 bucket. To comply with auditing requirements, the company must encrypt the data at rest. Users must not have the ability to change the encryption method or remove encryption when the users upload data. The company must be able to audit all encryption and storage actions. Which solution will meet these requirements and provide the MOST granular control?
Answer: A
Explanation:
AWS KMS with SSE-KMS provides granular key management and auditability. All use of KMS keys is logged in AWS CloudTrail, which allows compliance teams to monitor encryption and decryption operations. A bucket policy can be configured to enforce uploads only with the designated KMS key, ensuring that users cannot bypass encryption or change methods.
Option A (SSE-S3 with bucket policy) enforces encryption but does not provide the same level of control or auditable key usage.
Option C (client-side encryption) increases complexity and key management burden.
Option D prevents bucket setting changes but does not prevent unencrypted uploads.
Therefore, B ensures the most granular control, auditability, and compliance with financial data requirements.
NEW QUESTION # 865
A company stores data for multiple business units in a single Amazon S3 bucket that is in the company's payer AWS account. To maintain data isolation, the business units store data in separate prefixes in the S3 bucket by using an S3 bucket policy.
The company plans to add a large number of dynamic prefixes. The company does not want to rely on a single S3 bucket policy to manage data access at scale. The company wants to develop a secure access management solution in addition to the bucket policy to enforce prefix-level data isolation.
Answer: B
Explanation:
Why Option C is Correct:
* S3 Access Points: Provide scalable management of access to large datasets with specific permissions for individual prefixes.
* Dynamic Prefixes: Access points simplify managing access to a growing number of prefixes without relying solely on a single bucket policy.
* Fine-Grained Control: Resource-based permissions on access points enforce prefix-level isolation effectively.
Why Other Options Are Not Ideal:
* Option A: Using deny/allow bucket policies introduces complexity and is less scalable for dynamic prefixes.
* Option B: Encryption ensures data security but does not address access management.
* Option D: Pre-signed URLs are temporary and not suitable for managing access at scale.
AWS References:
* Amazon S3 Access Points:AWS Documentation - S3 Access Points
NEW QUESTION # 866
[Design Secure Architectures]
A company stores user data in AWS. The data is used continuously with peak usage during business hours. Access patterns vary, with some data not being used for months at a time. A solutions architect must choose a cost-effective solution that maintains the highest level of durability while maintaining high availability.
Which storage solution meets these requirements?
Answer: C
Explanation:
Amazon S3 Intelligent-Tiering is the most cost-effective solution for this scenario, providing both high availability and durability while adjusting automatically to changing access patterns. It moves data across two access tiers: one optimized for frequent access and another for infrequent access, based on usage patterns. This tiering ensures that the company avoids paying for unused storage while also keeping frequently accessed data in a more accessible tier.
Key AWS references and benefits ofS3 Intelligent-Tiering:
High Durability and Availability: Amazon S3 offers 99.999999999% durability and 99.9% availability for objects stored, ensuring data is always protected.
Automatic Tiering: Data is automatically moved between tiers based on access patterns, making it ideal for workloads with unpredictable or variable access patterns.
No Retrieval Fees: Unlike S3 One Zone-IA or Glacier, there are no retrieval fees, making this more cost-effective in scenarios where access patterns vary over time.
AWS Documentation: According to the AWS Well-Architected Framework under theCost Optimization Pillar, S3 Intelligent-Tiering is recommended for storage when access patterns change over time, as it minimizes costs while maintaining availability.
NEW QUESTION # 867
A company runs multiple applications on Amazon EC2 instances in a VPC. Application A runs in a private subnet that has a custom route table and network ACL. Application B runs in a second private subnet in the same VPC. The company needs to prevent Application A from sending traffic to Application B. Which solution will meet this requirement?
Answer: B
Explanation:
Security groups are stateful, but they cannot explicitly deny traffic - only allow.
Network ACLs are stateless and support explicit deny rules. To prevent Application A from sending traffic to Application B, configure a deny outbound rule in the network ACL of Application A's subnet to block traffic to Application B's subnet.
"Unlike security groups, network ACLs support both allow and deny rules, enabling you to explicitly block traffic." This is the correct method to block outbound traffic between subnets.
NEW QUESTION # 868
A company is migrating a production environment application to the AWS Cloud. The company uses Amazon RDS for Oracle for the database layer. The company needs to configure thedatabase to meet the needs of high I/O intensive workloads that require low latency and consistent throughput. The database workloads are read intensive and write intensive.
Which solution will meet these requirements?
Answer: A
Explanation:
Provisioned IOPS SSD (io1 or io2) is designed for I/O-intensive workloads that require low latency and consistent throughput, which is critical for transactional and production databases. It provides predictable performance, unlike General Purpose SSD, which is burst-based.
Reference:
NEW QUESTION # 869
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