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Amazon SAA-C03 Exam Syllabus Topics:

Section	Weight	Objectives
Design Resilient Architectures	26%	- Design decoupled and loosely coupled systems 1. Serverless and managed service integration 2. Messaging and queue services 3. Event-driven architectures - Design for reliability and recovery 1. Backup and restore mechanisms 2. Failover and failback processes - Design highly available and fault-tolerant architectures 1. Regions, Availability Zones, and edge locations 2. Replication and disaster recovery strategies 3. Load balancing and auto scaling
Design High-Performing Architectures	24%	- Design high-performance storage solutions 1. Storage types (object, block, file) 2. Storage performance and durability 3. Caching and content delivery - Design high-performance compute solutions 1. Scaling and performance optimization 2. Instance types and sizing 3. Compute options (EC2, Lambda, ECS, EKS) - Design high-performance networking solutions 1. Latency reduction and throughput optimization 2. Global acceleration and routing 3. Network architecture and connectivity
Design Secure Architectures	30%	- Design for security and threat detection 1. Incident response and security automation 2. Monitoring and logging services - Design secure workloads and applications 1. Data protection and encryption (at rest/in transit) 2. Compliance and governance controls 3. Network security (VPC, security groups, NACLs) - Design secure access to AWS resources 1. Security best practices and least privilege 2. Identity and access management (IAM, IAM Identity Center) 3. Multi-account access and control 4. Shared responsibility model
Design Cost-Optimized Architectures	20%	- Control and monitor costs 1. Resource tagging and allocation 2. Cost management tools and alerts - Design cost-effective compute and network solutions 1. Data transfer cost optimization 2. Right-sizing and reserved instances 3. Serverless and pay-as-you-go models - Identify cost-effective storage solutions 1. Storage classes and lifecycle policies 2. Data retention and archiving

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Amazon AWS Certified Solutions Architect - Associate Sample Questions (Q184-Q189):

NEW QUESTION # 184
A company is designing a microservice-based architecture tor a new application on AWS. Each microservice will run on its own set of Amazon EC2 instances. Each microservice will need to interact with multiple AWS services such as Amazon S3 and Amazon Simple Queue Service (Amazon SQS). The company wants to manage permissions for each EC2 instance based on the principle of least privilege. Which solution will meet this requirement?

A. Create individual IAM roles based on the specific needs of each microservice. Associate the IAM roles with the appropriate EC2 instances.
B. Use AWS Organizations to create a separate account for each microservice. Manage permissions at the account level.
C. Create a single IAM role that has permission to access all AWS services. Associate the IAM role with all EC2 instances that run the microservices
D. Assign an IAM user to each micro-service. Use access keys stored within the application code to authenticate AWS service requests.

Answer: A

Explanation:
When designing a microservice architecture where each microservice interacts with different AWS services, it's essential to follow the principle of least privilege. This means granting each microservice only the permissions it needs to perform its tasks, reducing the risk of unauthorized access or accidental actions.
The recommended approach is to create individualIAM roleswith policies that grant each microservice the specific permissions it requires. Then, these roles should be associated with the EC2 instances that run the corresponding microservice. By doing so, each EC2 instance will assume its specific IAM role, and permissions will be automatically managed by AWS.
IAM roles provide temporary credentials via the instance metadata service, eliminating the need to hard-code credentials in your application code, which enhances security.

NEW QUESTION # 185
A company uses a set of Amazon EC2 instances to host a website. The website uses an Amazon S3 bucket to store images and media files.
The company wants to automate website infrastructure creation to deploy the website to multiple AWS Regions. The company also wants to provide the EC2 instances access to the S3 bucket so the instances can store and access data by using AWS Identity and Access Management (IAM).
Which solution will meet these requirements MOST securely?

A. Create a file that contains an IAM secret access key and access key ID. Store the file in a new S3 bucket. Create an AWS CloudFormation template. In the template, create a parameter to specify the location of the S3 object that contains the access key and access key ID.
B. Create an AWS Cloud Format ion template for the web server EC2 instances. Save an IAM access key in the UserData section of the AWS;:EC2::lnstance entity in the CloudFormation template.
C. Create an IAM role and an IAM access policy that allows the web server EC2 instances to access the S3 bucket. Create an AWS CloudFormation template for the web server EC2 instances that contains an IAM instance profile entity that references the IAM role and the IAM access policy.
D. Create a script that retrieves an IAM secret access key and access key ID from IAM and stores them on the web server EC2 instances. Include the script in the UserData section of the AWS::EC2::lnstance entity in an AWS CloudFormation template.

Answer: C

Explanation:
The most secure solution for allowing EC2 instances to access an S3 bucket is by usingIAM roles. An IAM role can be created with an access policy that grants the required permissions (e.g., to read and write to the S3 bucket). The IAM role is then associated with the EC2 instances through anIAM instance profile.
By associating the role with the instances, the EC2 instances can securely assume the role and receive temporary credentials via the instance metadata service. This avoids the need to store credentials (such as access keys) on the instances or within the application, enhancing security and reducing the risk of credentials being exposed.
AWS CloudFormation can be used to automate the creation of the entire infrastructure, including EC2 instances, IAM roles, and associated policies.
AWS Reference:
IAM Roles for EC2 Instancesoutlines the use of IAM roles for secure access to AWS services.
AWS CloudFormation User Guidedetails how to create and manage resources using CloudFormation templates.
Why the other options are incorrect:
A . Save IAM access key in UserData: This is insecure because it involves storing long-term credentials in the instance user data, which can be exposed.
B . Store access keys in S3: This is also insecure, as it involves managing and distributing long-term credentials, which should be avoided.
D . Retrieve access keys via a script: This approach is unnecessarily complex and less secure than using IAM roles, which provide temporary credentials automatically.

NEW QUESTION # 186
A company is developing an AI-powered application that uses an Amazon API Gateway REST API and a large language model (LLM). The API uses rate limiting and a custom authorizer.
Users report that the application is often unresponsive. The company discovered that the LLM processing can take a long time to finish, which causes the API calls to time out and fail. The company wants to resolve the problem with the fewest changes to the existing architecture.
Which solution will meet these requirements?

A. Replace the REST API with an Amazon Simple Queue Service (Amazon SQS) queue.
B. Split the LLM response into smaller chunks that finish sooner.
C. Replace the REST API with an Application Load Balancer.
D. Increase the API Gateway integration timeout quota.

Answer: D

Explanation:
Increasing the API Gateway integration timeout allows long-running LLM processing to complete without timing out, resolving unresponsiveness while requiring minimal changes to the existing architecture.

NEW QUESTION # 187
A company has an on-premises application that uses SFTP to collect financial data from multiple vendors.
The company is migrating to the AWS Cloud. The company has created an application that uses Amazon S3 APIs to upload files from vendors.
Some vendors run their systems on legacy applications that do not support S3 APIs. The vendors want to continue to use SFTP-based applications to upload data. The company wants to use managed services for the needs of the vendors that use legacy applications.
Which solution will meet these requirements with the LEAST operational overhead?

A. Create an AWS Database Migration Service (AWS DMS) instance to replicate data from the storage of the vendors that use legacy applications to Amazon S3. Provide the vendors with the credentials to access the AWS DMS instance.
B. Create an AWS Transfer Family endpoint for vendors that use legacy applications.
C. Configure an Amazon S3 File Gateway for vendors that use legacy applications to upload files to an SMB file share.
D. Configure an Amazon EC2 instance to run an SFTP server. Instruct the vendors that use legacy applications to use the SFTP server to upload data.

Answer: B

Explanation:
AWS Transfer Family is a fully managed service that provides SFTP, FTPS, and FTP access directly to Amazon S3. It allows organizations to support legacy data transfer protocols without managing infrastructure.
This approach gives the vendors a familiar SFTP interface, with files landing directly in S3, and requires minimal operational effort compared to managing EC2 servers or using gateways.
Reference Extract from AWS Documentation / Study Guide:
"AWS Transfer Family enables secure transfer of files directly into and out of Amazon S3 using SFTP, FTPS, and FTP, and is fully managed by AWS, significantly reducing operational overhead." Source: AWS Certified Solutions Architect - Official Study Guide, Data Migration and Transfer section.

NEW QUESTION # 188
A media company hosts a web application on AWS for uploading videos. Only authenticated users should upload within a specified time frame after authentication. Which solution will meet these requirements with the LEAST operational overhead?

A. Develop a custom authentication service that integrates with Amazon Cognito to control and log direct S3 bucket access through the application.
B. Use AWS Security Token Service (AWS STS) to assume a pre-defined IAM role that grants authenticated users temporary permissions to upload videos directly to the S3 bucket.
C. Configure the application to generate IAM temporary security credentials for authenticated users.
D. Create an AWS Lambda function that generates pre-signed URLs when a user authenticates.

Answer: D

Explanation:
Option B: Pre-signed URLs provide temporary, authenticated access to S3, limiting uploads to the time frame specified. This solution is lightweight, efficient, and easy to implement.
Option A requires the management of IAM temporary credentials, adding complexity.
Option C involves unnecessary development effort.
Option D introduces more complexity with STS and roles than pre-signed URLs.

NEW QUESTION # 189
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