Architecting on AWS Certification AWS Certified Solutions Architect - Associate 2

Question 1

A company needs to store frequently accessed data with millisecond latency and the ability to scale to millions of requests per second. Which AWS service best meets these requirements?

Accepted Answer

Amazon DynamoDB

Answer

DynamoDB is a fully managed NoSQL database that provides single-digit millisecond performance at any scale.

Question 2

An application requires a shared file system accessible by multiple EC2 instances simultaneously across multiple Availability Zones. Which storage solution should be used?

Accepted Answer

Amazon EFS

Answer

Amazon EFS is a fully managed NFS file system that can be mounted concurrently by multiple EC2 instances across AZs.

Question 3

A Solutions Architect must ensure that an S3 bucket's objects are encrypted at rest using keys managed by the customer. Which encryption option achieves this with the least operational overhead?

Accepted Answer

SSE-KMS with customer managed key

Answer

SSE-KMS with a customer managed key gives the customer full control over key rotation, policies, and auditing while AWS manages the encryption engine.

Question 4

A web application experiences unpredictable traffic spikes. The architect wants to decouple the front-end from the back-end processing layer to handle bursts without losing requests. Which AWS service is most appropriate?

Accepted Answer

Amazon SQS

Answer

SQS acts as a buffer between producers and consumers, absorbing traffic spikes and allowing back-end workers to process messages at their own pace.

Question 5

Which VPC feature allows private subnets to initiate outbound internet traffic while preventing inbound connections from the internet?

Accepted Answer

NAT Gateway

Answer

A NAT Gateway provides outbound-only internet access for resources in private subnets by translating private IPs to the gateway's public IP.

Architecting on AWS Certification Practice Test

Architecting on AWS Certification Practice Test

Architecting on AWS Certification AWS Certified Solutions Architect - Associate 2