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Amazon SAA-C03 Exam Syllabus Topics:

Section	Weight	Objectives
Design Secure Architectures	30%	- Design secure workloads and applications 1. Encryption at rest and in transit 2. Security groups and NACLs 3. AWS WAF and Shield 4. AWS KMS and CloudHSM - Determine appropriate data security controls 1. Data encryption strategies 2. Data backup and recovery 3. Data classification 4. Amazon Macie and GuardDuty - Design secure access to AWS resources 1. Identity federation 2. AWS Organizations and SCPs 3. Multi-factor authentication (MFA) 4. IAM policies and roles
Design Cost-Optimized Architectures	20%	- Design cost-optimized storage solutions 1. S3 Intelligent-Tiering 2. EFS cost optimization 3. EBS volume type selection 4. S3 storage classes and lifecycle policies - Design cost-optimized database solutions 1. DynamoDB capacity modes (On-demand vs Provisioned) 2. ElastiCache for caching 3. Aurora Serverless 4. RDS Reserved Instances - Design cost-optimized compute solutions 1. Right-sizing instances 2. Auto Scaling for cost optimization 3. AWS Lambda pricing model 4. EC2 purchasing options (On-Demand, Reserved, Spot, Savings Plans) - Design cost-optimized network architectures 1. VPC endpoints to reduce NAT costs 2. CloudFront to reduce origin load 3. AWS Direct Connect for cost optimization 4. Data transfer costs
Design Resilient Architectures	26%	- Design scalable and loosely coupled architectures 1. Amazon API Gateway 2. Amazon SQS and SNS 3. Auto Scaling groups 4. Amazon EventBridge 5. Elastic Load Balancing - Design highly available and/or fault-tolerant architectures 1. Multi-Region architectures 2. Amazon Route 53 routing policies 3. Disaster recovery strategies (backup/restore, pilot light, warm standby, multi-site) 4. AWS Global Accelerator 5. Multi-AZ deployments
Design High-Performing Architectures	24%	- Determine high-performing and/or scalable network architectures 1. VPC endpoints 2. AWS Direct Connect 3. AWS Global Accelerator 4. Amazon CloudFront 5. Amazon Route 53 - Determine high-performing and/or scalable storage solutions 1. Instance Store 2. Amazon EBS volume types 3. Amazon FSx 4. Amazon EFS 5. Amazon S3 storage classes and lifecycle policies - Determine high-performing database solutions 1. Amazon ElastiCache (Redis/Memcached) 2. Amazon DynamoDB 3. Amazon Redshift 4. Amazon RDS and Aurora - Determine high-performing data ingestion and transformation solutions 1. Amazon MSK 2. AWS Glue 3. AWS Data Pipeline 4. Amazon Kinesis - Design high-performing and elastic compute solutions 1. Amazon ECS and EKS 2. AWS Lambda 3. Amazon EC2 instance types and families 4. AWS Elastic Beanstalk

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Amazon AWS Certified Solutions Architect - Associate SAA-C03 Prüfungsfragen mit Lösungen (Q860-Q865):

860. Frage
[Design Secure Architectures]
A solutions architect is designing a multi-tier application for a company. The application's users upload images from a mobile device. The application generates a thumbnail of each image and returns a message to the user to confirm that the image was uploaded successfully.
The thumbnail generation can take up to 60 seconds, but the company wants to provide a faster response time to its users to notify them that the original image was received. The solutions architect must design the application to asynchronously dispatch requests to the different application tiers.
What should the solutions architect do to meet these requirements?

A. Create Amazon Simple Notification Service (Amazon SNS) notification topics and subscriptions Use one subscription with the application to generate the thumbnail after the imageupload is complete. Use a second subscription to message the user's mobile app by way of a push notification after thumbnail generation is complete.
B. Create an AWS Step Functions workflow Configure Step Functions to handle the orchestration between the application tiers and alert the user when thumbnail generation is complete
C. Write a custom AWS Lambda function to generate the thumbnail and alert the user. Use the image upload process as an event source to invoke the Lambda function.
D. Create an Amazon Simple Queue Service (Amazon SQS) message queue. As images are uploaded, place a message on the SQS queue for thumbnail generation. Alert the user through an application message that the image was received

Antwort: D

Begründung:
This option is the most efficient because it uses Amazon SQS, which is a fully managed message queuing service that lets you send, store, and receive messages between software components at any volume, without losing messages or requiring other services to be available1. It also uses an SQS message queue to asynchronously dispatch requests to the different application tiers, which decouples the image upload process from the thumbnail generation process and enables scalability and reliability. It also alerts the user through an application message that the image was received, which provides a faster response time to the user than waiting for the thumbnail generation to complete. Option A is less efficient because it uses a custom AWS Lambda function to generate the thumbnail and alert the user, which is a way to run code without provisioning or managing servers. However, this does not use an asynchronous dispatch mechanism to separate the image upload process from the thumbnail generation process. It also uses the image upload process as an event source to invoke the Lambda function, which could cause concurrency issues if there are many images uploaded at once. Option B is less efficient because it uses AWS Step Functions, whichis a fully managed service that provides a graphical console to arrange and visualize the components of your application as a series of steps2. However, this does not use an asynchronous dispatch mechanism to separate the image upload process from the thumbnail generation process. It also uses Step Functions to handle the orchestration between the application tiers and alert the user when thumbnail generation is complete, which could introduce additional complexity and latency. Option D is less efficient because it uses Amazon SNS, which is a fully managed messaging service that enables you to send messages or notifications directly to users with SMS text messages or email3. However, this does not use an asynchronous dispatch mechanism to separate the image upload process from the thumbnail generation process. It also uses SNS notification topics and subscriptions to generate the thumbnail after the image upload is complete and message the user's mobile app by way of a push notification after thumbnail generation is complete, which could introduce additional complexity and latency.

861. Frage
A developer needs to export the contents of several Amazon DynamoDB tables into Amazon S3 buckets to comply with company data regulations. The developer uses the AWS CLI to run commands to export from each table to the proper S3 bucket. The developer sets up AWS credentials correctly and grants resources appropriate permissions. However, the exports of some tables fail.
What should the developer do to resolve this issue?

A. Ensure that DynamoDB Accelerator (DAX) is enabled.
B. Ensure that the target S3 bucket is in the same AWS Region as the DynamoDB table.
C. Ensure that point-in-time recovery is enabled on the DynamoDB tables.
D. Ensure that DynamoDB streaming is enabled for the tables.

Antwort: C

Begründung:
* Export Requirements:
* To export data from DynamoDB to Amazon S3, point-in-time recovery (PITR) must be enabled for the tables. This feature creates a snapshot of the data, which is essential for exports.
* Incorrect Options Analysis:
* Option B: S3 buckets and DynamoDB tables do not need to be in the same region for exports.
* Option C: DynamoDB streams are unrelated to the export functionality.
* Option D: DAX accelerates reads but has no role in exports.
References:
* Exporting DynamoDB Data to Amazon S3

862. Frage
A solutions architect is creating an AWS Lambda function that needs network access to private resources in a VPC.
Which solution will provide this access with the LEAST operational overhead?

A. Configure the Lambda function to route traffic through a VPN connection. Create a security group that allows network access to the private resources. Associate the security group with the Lambda function.
B. Attach the Lambda function to the VPC through private subnets. Create a security group that allows network access to the private resources. Associate the security group with the Lambda function.
C. Configure a VPC endpoint connection for the Lambda function. Set up the VPC endpoint to route traffic through a NAT gateway.
D. Configure an AWS PrivateLink endpoint for the private resources. Configure the Lambda function to reference the PrivateLink endpoint.

Antwort: B

Begründung:
AWS Lambda provides native integration with Amazon VPC. The solutions architect can configure the Lambda function with private subnets and a security group that permits the required network connections.
Lambda then creates and manages the necessary Hyperplane elastic network interfaces, allowing the function to communicate with private EC2 instances, RDS databases, ElastiCache clusters, and other resources that are reachable within the VPC. The destination resources should allow inbound traffic from the Lambda function's security group on only the required ports. This approach uses managed Lambda networking and has the least operational overhead. A VPN connection is unnecessary for communication inside the VPC. VPC endpoints provide private access to supported AWS services rather than arbitrary VPC resources. AWS PrivateLink could expose a private endpoint service, but it would add unnecessary components and management.

863. Frage
A solutions architect wants to use the following JSON text as an identity-based policy to grant specific permissions:
Which IAM principals can the solutions architect attach this policy to? (Select TWO.)

A. Role
B. Organization
C. Amazon EC2 resource
D. Amazon Elastic Container Service (Amazon ECS) resource
E. Group

Antwort: A,E

Begründung:
This JSON text is an identity-based policy that grants specific permissions. The IAM principals that the solutions architect can attach this policy to are Role and Group. This is because the policy is written in JSON and is an identity-based policy, which can be attached to IAM principals such as users, groups, and roles. Identity-based policies are permissions policies that you attach to IAM identities (users, groups, or roles) and explicitly state what that identity is allowed (or denied) to do1. Identity-based policies are different from resource-based policies, which define the permissions around the specific resource1. Resource-based policies are attached to a resource, such as an Amazon S3 bucket or anAmazon EC2 instance1. Resource- based policies can also specify a principal, which is the entity that is allowed or denied access to the resource1. Organization is not an IAM principal, but a feature of AWS Organizations that allows you to manage multiple AWSaccountscentrally2. Amazon ECS resource and Amazon EC2 resource are not IAM principals, but AWS resources that can have resource-based policies attached to them34.
References:
Identity-based policies and resource-based policies
AWS Organizations
Amazon ECS task role
Amazon EC2 instance profile

864. Frage
A company is developing a social media application. The company anticipates rapid and unpredictable growth in users and data volume.
The application needs to handle a continuous high volume of user requests. User requests include long-running processes that store large amounts of user-generated content and user profiles in a relational format. The processes must run in a specific order. The company requires an architecture that can scale resources to meet demand spikes without downtime or performance degradation. The company must ensure that the components of the application can evolve independently without affecting other parts of the system. Which combination of AWS services will meet these requirements?

A. Use Amazon DynamoDB as the database. Use AWS Lambda functions to implement the application.Configure Amazon DynamoDB Streams to invoke the Lambda functions. Use AWS Step Functions to manage workflows between services.
B. Deploy the application on Amazon Elastic Container Service (Amazon ECS) with the AWS Fargate launch type. Use Amazon RDS as the database. Use Amazon Simple Notification Service (Amazon SNS) to decouple message processing between components.
C. Use an AWS Elastic Beanstalk environment with auto scaling to deploy the application. Use Amazon RDS as the database. Use Amazon Simple Notification Service (Amazon SNS) to decouple message processing between components.
D. Deploy the application on Amazon Elastic Container Service (Amazon ECS) with the AWS Fargate launch type. Use Amazon RDS as the database. Use Amazon Simple Queue Service (Amazon SQS) to decouple message processing between components.

Antwort: D

Begründung:
ECS with Fargate: Allows containerized workloads to scale rapidly without managing underlying servers, handling unpredictable growth effectively.
* RDS for Relational Data: Manages large relational datasets efficiently while supporting high availability.
* SQS for Decoupling: Ensures message processing occurs in a specific order, decoupling application components and allowing independent evolution.: AWS ECS with Fargate Documentation, AWS SQS Documentation

865. Frage
......

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