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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design Resilient Architectures | 26% | - Highly available architecture
|
| Topic 2: Design Secure Architectures | 30% | - Secure workloads and applications
|
| Topic 3: Design High-Performing Architectures | 24% | - Compute and storage optimization
|
| Topic 4: Design Cost-Optimized Architectures | 20% | - Cost-effective resource selection
|
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NEW QUESTION # 511
[Design High-Performing Architectures]
A company runs a Java-based job on an Amazon EC2 instance. The job runs every hour and takes 10 seconds to run. The job runs on a scheduled interval and consumes 1 GB of memory. The CPU utilization of the instance is low except for short surges during which the job uses the maximum CPU available. The company wants to optimize the costs to run the job.
Which solution will meet these requirements?
Answer: D
Explanation:
AWS Lambda is a serverless compute service that allows you to run code without provisioning or managing servers. You can create Lambda functions using various languages, including Java, and specify the amount of memory and CPU allocated to your function. Lambda charges you only for the compute time you consume, which is calculated based on the number of requests and the duration of your code execution. You can use Amazon EventBridge to trigger your Lambda function on a schedule, such as every hour, using cron or rate expressions. This solution will optimize the costs to run the job, as you will not payfor any idle time or unused resources, unlike running the job on an EC2 instance. Reference: 1: AWS Lambda - FAQs2, General Information section2: Tutorial:Schedule AWS Lambda functions using EventBridge3, Introduction section3: Schedule expressions using rate or cron - AWS Lambda4, Introduction section.
NEW QUESTION # 512
A company uses Amazon API Gateway to run a private gateway with two REST APIs in the same VPC. The BuyStock RESTful web service calls the CheckFunds RESTful web service to ensure that enough funds are available before a stock can be purchased. The company has noticed in the VPC flow logs that the BuyStock RESTful web service calls the CheckFunds RESTful web service over the internet instead of through the VPC. A solutions architect must implement a solution so that the APIs communicate through the VPC.
Which solution will meet these requirements with the FEWEST changes to the code?
(Select Correct Option/s and give detailed explanation from AWS Certified Solutions Architect - Associate (SAA-C03) Study Manual or documents)
Answer: C
Explanation:
Using an interface endpoint will allow the BuyStock RESTful web service and the CheckFunds RESTful web service to communicate through the VPC without any changes to the code. An interface endpoint creates an elastic network interface (ENI) in the customer's VPC, and then configures the route tables to route traffic from the APIs to the ENI. This will ensure that the two APIs will communicate through the VPC without any changes to the code.
NEW QUESTION # 513
[Design High-Performing Architectures]
An ecommerce company needs to run a scheduled daily job to aggregate and filler sales records for analytics. The company stores the sales records in an Amazon S3 bucket. Each object can be up to 10 G6 in size Based on the number of sales events, the job can take up to an hour to complete. The CPU and memory usage of the fob are constant and are known in advance.
A solutions architect needs to minimize the amount of operational effort that is needed for the job to run. Which solution meets these requirements?
Answer: D
Explanation:
The solution that meets the requirements with the least operational overhead is to create a **Regional AWS WAF web ACL with a rate-based rule** and associate the web ACL with the API Gateway stage. This solution will protect the application from HTTP flood attacks by monitoring incoming requests and blocking requests from IP addresses that exceed the predefined rate. Amazon CloudFront distribution with Lambda@Edge in front of the API Gateway Regional API endpoint is also a good solution but it requires more operational overhead than the previous solution. Using Amazon CloudWatch metrics to monitor theCount metric and alerting the security team when the predefined rate is reached is not a solution that can protect against HTTP flood attacks. Creating an Amazon CloudFront distribution in front of the API Gateway Regional API endpoint with a maximum TTL of 24 hours is not a solution that can protect against HTTP flood attacks.
NEW QUESTION # 514
A company operates a two-tier application for image processing. The application uses two Availability Zones, each with one public subnet and one private subnet. An Application Load Balancer (ALB) for the web tier uses the public subnets. Amazon EC2 instances for the application tier use the private subnets.
Users report that the application is running more slowly than expected. A security audit of the web server log files shows that the application is receiving millions of illegitimate requests from a small number of IP addresses. A solutions architect needs to resolve the immediate performance problem while the company investigates a more permanent solution.
What should the solutions architect recommend to meet this requirement?
Answer: C
Explanation:
Deny the request from the first entry at the public subnet, dont allow it to cross and get to the private subnet.
In this scenario, the security audit reveals that the application is receiving millions of illegitimate requests from a small number of IP addresses. To address this issue, it is recommended to modify the network ACL (Access Control List) for the web tier subnets. By adding an inbound deny rule specifically targeting the IP addresses that are consuming resources, the network ACL can block the illegitimate traffic at the subnet level before it reaches the web servers. This will help alleviate the excessive load on the web tier and improve the application's performance.
NEW QUESTION # 515
A company is designing the network for an online multi-player game. The game uses the UDP networking protocol and will be deployed in eight AWS Regions. The network architecture needs to minimize latency and packet loss to give end users a high-quality gaming experience.
Which solution will meet these requirements?
Answer: A
Explanation:
The best solution for this situation is option B, setting up AWS Global Accelerator with UDP listeners and endpoint groups in each Region. AWS Global Accelerator is a networking service that improves the availability and performance of internet applications by routing user requests to the nearest AWS Region [1].
It also improves the performance of UDP applications by providing faster, more reliable data transfers with lower latency and fewer packet losses. By setting up UDP listeners and endpoint groups in each Region, Global Accelerator will route traffic to the nearest Region for faster response times and a better user experience.
NEW QUESTION # 516
......
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