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Amazon AWS-Solutions-Architect-Associate Exam Syllabus Topics:

SectionWeightObjectives
Design Resilient Architectures26%- Disaster recovery
  • 1. Backup and restore strategies
    • 2. RTO and RPO planning
      - Highly available architectures
      • 1. Auto Scaling and Load Balancing
        • 2. Multi-AZ deployments
          Design Cost-Optimized Architectures20%- Cost monitoring and governance
          • 1. AWS Cost Explorer
            • 2. Budget alerts and tagging strategies
              - Cost optimization strategies
              • 1. Reserved and Spot Instances
                • 2. Right-sizing resources
                  Design High-Performing Architectures24%- Compute optimization
                  • 1. EC2 instance selection
                    • 2. Serverless architectures (Lambda)
                      - Storage and database performance
                      • 1. RDS and DynamoDB scaling patterns
                        • 2. S3 performance optimization
                          Design Secure Architectures30%- Identity and Access Management (IAM)
                          • 1. Cross-account access
                            • 2. Least privilege access control
                              • 3. IAM users, roles, and policies
                                - Data protection and encryption
                                • 1. KMS encryption services
                                  • 2. Encryption in transit and at rest

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                                    Amazon AWS Certified Solutions Architect - Associate (SAA-C03) Sample Questions (Q205-Q210):

                                    NEW QUESTION # 205
                                    A company is running an ecommerce application on Amazon EC2. The application consists of a stateless web tier that requires a minimum of 10 instances, and a peak of 250 instances to support the application's usage.
                                    The application requires 50 instances 80% of the time.
                                    Which solution should be used to minimize costs?

                                    Answer: C

                                    Explanation:
                                    Reserved Instances
                                    Having 50 EC2 RIs provide a discounted hourly rate and an optional capacity reservation for EC2 instances.
                                    AWS Billing automatically applies your RI's discounted rate when attributes of EC2 instance usage match attributes of an active RI.
                                    If an Availability Zone is specified, EC2 reserves capacity matching the attributes of the RI. The capacity reservation of an RI is automatically utilized by running instances matching these attributes.
                                    You can also choose to forego the capacity reservation and purchase an RI that is scoped to a region. RIs that are scoped to a region automatically apply the RI's discount to instance usage across AZs and instance sizes in a region, making it easier for you to take advantage of the RI's discounted rate.
                                    On-Demand Instance
                                    On-Demand instances let you pay for compute capacity by the hour or second (minimum of 60 seconds) with no long-term commitments. This frees you from the costs and complexities of planning, purchasing, and maintaining hardware and transforms what are commonly large fixed costs into much smaller variable costs.
                                    The pricing below includes the cost to run private and public AMIs on the specified operating system ("Windows Usage" prices apply to Windows Server 2003 R2, 2008, 2008 R2, 2012, 2012 R2, 2016, and 2019). Amazon also provides you with additional instances for Amazon EC2 running Microsoft Windows with SQL Server, Amazon EC2 running SUSE Linux Enterprise Server, Amazon EC2 running Red Hat Enterprise Linux and Amazon EC2 running IBM that are priced differently.
                                    Spot Instances
                                    A Spot Instance is an unused EC2 instance that is available for less than the On-Demand price. Because Spot Instances enable you to request unused EC2 instances at steep discounts, you can lower your Amazon EC2 costs significantly. The hourly price for a Spot Instance is called a Spot price. The Spot price of each instance type in each Availability Zone is set by Amazon EC2, and adjusted gradually based on the long-term supply of and demand for Spot Instances. Your Spot Instance runs whenever capacity is available and the maximum price per hour for your request exceeds the Spot price.
                                    Reference: https://aws.amazon.com/ec2/pricing/reserved-instances/
                                    https://aws.amazon.com/ec2/pricing/on-demand/
                                    https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-spot-instances.html


                                    NEW QUESTION # 206
                                    A company is using Site-to-Site VPN connections for secure connectivity to its AWS Cloud resources from on premises. Due to an increase in traffic across the VPN connections to the Amazon EC2 instances, users are experiencing slower VPN connectivity Which solution will improve the VPN throughput?

                                    Answer: C


                                    NEW QUESTION # 207
                                    A solutions architect is designing a VPC with public and private subnets. The VPC and subnets use IPv4 CIDR blocks. There is one public subnet and one private subnet in each of three Availability Zones (AZs) for high availability. An internet gateway is used to provide internet access for the public subnets. The private subnets require access to the internet to allow Amazon EC2 instances to download software updates.
                                    What should the solutions architect do to enable Internet access for the private subnets?

                                    Answer: B

                                    Explanation:
                                    Explanation
                                    https://aws.amazon.com/about-aws/whats-new/2018/03/introducing-amazon-vpc-nat-gateway-in-the-aws-govclo
                                    https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-comparison.html


                                    NEW QUESTION # 208
                                    Disabling automated backups ______ disable the point-in-time recovery.

                                    Answer: C


                                    NEW QUESTION # 209
                                    A company is designing an application. The application uses an AWS Lambda function to receive information through Amazon API Gateway and to store the information in an Amazon Aurora PostgreSQL database.
                                    During the proof-of-concept stage, the company has to increase the Lambda quotas significantly to handle the high volumes of data that the company needs to load into the database. A solutions architect must recommend a new design to improve scalability and minimize the configuration effort.
                                    Which solution will meet these requirements?

                                    Answer: B

                                    Explanation:
                                    Explanation
                                    bottlenecks can be avoided with queues (SQS).


                                    NEW QUESTION # 210
                                    ......

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