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| Section | Weight | Objectives |
|---|---|---|
| Design Secure Architectures | 30% | - Design secure access to AWS resources
|
| Design High-Performing Architectures | 24% | - Design high-performing and elastic compute solutions
|
| Design Cost-Optimized Architectures | 20% | - Design cost-optimized database solutions
|
| Design Resilient Architectures | 26% | - Design scalable and loosely coupled architectures
|
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NEW QUESTION # 203
A financial services company has a two-tier consumer banking application. The frontend serves static web content. The backend consists of APIs. The company needs to migrate the frontendcomponent to AWS. The backend of the application will remain on-premises. The company must protect the application from common web vulnerabilities and attacks. Which solution will meet this requirement?
Answer: B
Explanation:
Key Requirements:
Host the frontend on AWS as a static website.
Protect the application from common web vulnerabilities.
Minimal operational overhead.
Analysis of Options:
Option A:
Hosting the frontend on EC2 with an ALB introduces unnecessary complexity for serving static content.
AWS WAF rules can protect the ALB, but managing EC2 instances adds operational overhead.
Incorrect Approach: High operational complexity for a simple static website.
Option B:
Amazon CloudFront:Acts as a global CDN, reducing latency and protecting against DDoS attacks.
Multiple Origins: Allows static content to be served from S3 while routing API traffic to the on- premises backend.
AWS WAF:Integrates with CloudFront to provide web application protection.
Correct Approach: Offers low operational overhead with optimal security and performance.
Option C:
Using NLB and Network Firewall is unnecessary for a static website. This approach increases cost and complexity without addressing the frontend requirements effectively.
Incorrect Approach:Over-engineered solution.
Option D:
Hosting the frontend on S3 and using API Gateway is a viable option, but managing AWS WAF rules separately for both the S3 bucket and the REST API increases complexity.
Incorrect Approach: Less efficient than using CloudFront with multiple origins.
NEW QUESTION # 204
A company is running a business-critical web application on Amazon EC2 instances behind an Application Load Balancer. The EC2 instances are in an Auto Scaling group. The application uses an Amazon Aurora PostgreSQL database that is deployed in a single Availability Zone. The company wants the application to be highly available with minimum downtime and minimum loss of data.
Which solution will meet these requirements with the LEAST operational effort?
Answer: D
Explanation:
To achieve high availability with minimum downtime and minimum loss of data, the Auto Scaling group should be configured to use multiple Availability Zones to ensure that there is no single point of failure. The database should be configured as Multi-AZ to enable automatic failover in case of an outage in the primary Availability Zone. Additionally, an Amazon RDS Proxy instance can be used to improve the scalability and availability of the database by reducing connection failures and improving failover times.
NEW QUESTION # 205
A company's web application consists of an Amazon API Gateway API in front of an AWS Lambda function and an Amazon DynamoDB database. The Lambda function handles the business logic, and the DynamoDB table hosts the data. The application uses Amazon Cognito user pools to identify the individual users of the application. A solutions architect needs to update the application so that only users who have a subscription can access premium content.
Answer: B
Explanation:
Explanation
This option is the most efficient because it uses API usage plans and API keys, which are features of Amazon API Gateway that allow you to control who can access your API and how much and how fast they can access it1. It also implements API usage plans and API keys to limit the access of users who do not have a subscription, which enables you to create different tiers of access for your API and charge users accordingly.
This solution meets the requirement of updating the application so that only users who have a subscription can access premium content. Option A is less efficient because it uses API caching and throttling on the API Gateway API, which are features of Amazon API Gateway that allow you to improve the performance and availability of your API and protect your backend systems from traffic spikes2. However, this does not provide a way to limit the access of users who do not have a subscription. Option B is less efficient because it uses AWS WAF on the API Gateway API, which is a web application firewall service that helps protect your web applications or APIs against common web exploits that may affect availability, compromise security, or consume excessive resources3. However, this does not provide a way to limit the access of users who do not have a subscription. Option C is less efficient because it uses fine-grained IAM permissions to the premium content in the DynamoDB table, which are permissions that allow you to control access to specific items or attributes within a table4. However, this does not provide a way to limit the access of users who do not have a subscription at the API level.
NEW QUESTION # 206
A multinational manufacturing company has multiple accounts in AWS to separate their various departments such as finance, human resources, engineering and many others. There is a requirement to ensure that certain access to services and actions are properly controlled to comply with the security policy of the company.
As the Solutions Architect, which is the most suitable way to set up the multi-account AWS environment of the company?
Answer: C
Explanation:
Using AWS Organizations and Service Control Policies to control services on each account is the correct answer. Refer to the diagram below:
AWS Organizations offers policy-based management for multiple AWS accounts. With Organizations, you can create groups of accounts, automate account creation, apply and manage policies for those groups. Organizations enables you to centrally manage policies across multiple accounts, without requiring custom scripts and manual processes. It allows you to create Service Control Policies (SCPs) that centrally control AWS service use across multiple AWS accounts.
Setting up a common IAM policy that can be applied across all AWS accounts is incorrect because it is not possible to create a common IAM policy for multiple AWS accounts.
The option that says: Connect all departments by setting up a cross-account access to each of the AWS accounts of the company. Create and attach IAM policies to your resources based on their respective departments to control access is incorrect because although you can set up cross-account access to each department, this entails a lot of configuration compared with using AWS Organizations and Service Control Policies (SCPs). Cross-account access would be a more suitable choice if you only have two accounts to manage, but not for multiple accounts.
The option that says: Provide access to externally authenticated users via Identity Federation. Set up an IAM role to specify permissions for users from each department whose identity is federated from your organization or a third-party identity provider is incorrect as this option is focused on the Identity Federation authentication set up for your AWS accounts but not the IAM policy management for multiple AWS accounts. A combination of AWS Organizations and Service Control Policies (SCPs) is a better choice compared to this option.
Explanation:
Reference:
https://aws.amazon.com/organizations/
Check out this AWS Organizations Cheat Sheet: https://tutorialsdojo.com/aws-organizations/ Service Control Policies (SCP) vs IAM Policies: https://tutorialsdojo.com/service-control-policies-scp-vs-iam- policies/ Comparison of AWS Services Cheat Sheets:
https://tutorialsdojo.com/comparison-of-aws-services/
NEW QUESTION # 207
An online shopping platform is hosted on an Auto Scaling group of On-Demand EC2 instances with a default Auto Scaling termination policy and no instance protection configured. The system is deployed across three Availability Zones in the US West region (us-west-1) with an Application Load Balancer in front to provide high availability and fault tolerance for the shopping platform. The us-west-1a, us-west-1, and us-west-1c Availability Zones have 10, 8 and 7 running instances respectively. Due to the low number of incoming traffic, the scale-in operation has been triggered.
Which of the following will the Auto Scaling group do to determine which instance to terminate first in this scenario? (Select THREE.)
Answer: A,E,F
Explanation:
The default termination policy is designed to help ensure that your network architecture spans Availability Zones evenly. With the default termination policy, the behavior of the Auto Scaling group is as follows:
1. If there are instances in multiple Availability Zones, choose the Availability Zone with the most instances and at least one instance that is not protected from scale in. If there is more than one Availability Zone with this number of instances, choose the Availability Zone with the instances that use the oldest launch configuration.
2. Determine which unprotected instances in the selected Availability Zone use the oldest launch configuration. If there is one such instance, terminate it.
3. If there are multiple instances to terminate based on the above criteria, determine which unprotected instances are closest to the next billing hour. (This helps you maximize the use of your EC2 instances and manage your Amazon EC2 usage costs.) If there is one such instance, terminate it.
4. If there is more than one unprotected instance closest to the next billing hour, choose one of these instances at random.
The following flow diagram illustrates how the default termination policy works:
Explanation:
Reference:
https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-instance-termination.html#default-termination-policy
Check out this AWS Auto Scaling Cheat Sheet:
https://tutorialsdojo.com/aws-auto-scaling/
NEW QUESTION # 208
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