SAA-C03 Exam Dumps : AWS Certified Solutions Architect - Associate (SAA-C03)

Comprehensive and Detailed 250 to 300 words of Explanation (AWS documentation-based, no links):

To capture traffic metadata to and from network interfaces in a VPC, the correct telemetry source is VPC Flow Logs. Flow Logs can publish records to destinations such as CloudWatch Logs, which is a natural first landing zone for near-real-time log ingestion and centralized retention/permissions. The next requirement is to stream that data to Amazon OpenSearch Service for analysis with minimal operational overhead.

Amazon Data Firehose is purpose-built for fully managed delivery of streaming data to destinations including OpenSearch. Firehose handles buffering, batching, retry behavior, and optional transformations, and it minimizes the need to build and operate custom consumers. Therefore, sending VPC Flow Logs to CloudWatch Logs and then using Firehose to deliver to OpenSearch is an operationally efficient and scalable pattern.

Option A uses Kinesis Data Streams, which would require building/operating consumers (or additional integration components) to read from the stream and load into OpenSearch, adding operational complexity compared with Firehose’s managed delivery. Options C and D are incorrect because CloudTrail records API activity and governance events, not VPC network flow records; VPC Flow Logs do not publish to CloudTrail trails.

Thus, B best meets the requirement: Flow Logs capture the network interface traffic metadata; CloudWatch Logs provides near-real-time log collection; and Firehose provides managed streaming delivery into OpenSearch for indexing and analytics with minimal operational effort.

The optimal way to improve reliability and scalability of SFTP on AWS is to use AWS Transfer Family (for SFTP). It provides a fully managed SFTP server integrated with Amazon S3.

No EC2 instances or infrastructure management is required.

AWS Transfer Family supports custom DNS domains (e.g., sftp.example.com) and allows integration with existing authentication mechanisms like LDAP, AD, or custom identity providers.

Files are uploaded directly to S3, eliminating the need for cron jobs to move data from EC2 to S3.

Built-in high availability and scalability removes the burden of managing infrastructure.

Other options:

A and D still require manual scaling, server maintenance, and cron jobs.

C (Storage Gateway) is used for hybrid file access, not for replacing an SFTP server.

???? Reference:

AWS Transfer Family for SFTP

The best solution is to useAmazon SQSto receive updates from the mobile app and process them with anAWS Lambdafunction. The Lambda function can rewrite the message body as necessary for each shipper and then publish the updates to the appropriateSNS topicfor distribution. Thissetup ensures that each shipper receives only the relevant data and minimizes operational overhead by using managed services.

Option A (SNS filter policy): SNS does not have the capability to rewrite message bodies before forwarding.

Option C (Second SNS topic): Using an additional SNS topic adds unnecessary complexity without solving the message rewriting requirement.

Option D (EventBridge Pipes): EventBridge Pipes is more complex than necessary for this use case, and Lambda can handle the logic more efficiently.

AWS References:

Amazon SQS

Amazon SNS with Lambda