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| Section | Weight | Objectives |
|---|---|---|
| Development with AWS Services | 32% | - Integrate AWS services into applications
|
| Troubleshooting and Optimization | 18% | - Troubleshoot application issues
|
| Deployment | 24% | - Deploy applications on AWS
|
| Security | 26% | - Apply security best practices
|
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NEW QUESTION # 623
A company's new mobile app uses Amazon API Gateway. As the development team completes a new release of its APIs, a developer must safely and transparently roll out the API change. What is the SIMPLEST solution for the developer to use for rolling out the new API version to a limited number of users through API Gateway?
Answer: C
Explanation:
The canary release deployment option in Amazon API Gateway allows the developer to safely roll out changes to a small percentage of users by configuring the canarySettings. This is the simplest and most direct way to gradually expose users to the new API version without creating a separate API or complex routing logic.
NEW QUESTION # 624
A developer is working on a Python application that runs on Amazon EC2 instances. The developer wants to enable tracing of application requests to debug performance issues in the code.
Which combination of actions should the developer take to achieve this goal? (Select TWO)
Answer: A,C
Explanation:
Explanation
This solution will meet the requirements by using AWS X-Ray to enable tracing of application requests to debug performance issues in the code. AWS X-Ray is a service that collects data about requests that the applications serve, and provides tools to view, filter, and gain insights into that data. The developer can install the AWS X-Ray daemon on the EC2 instances, which is a software that listens for traffic on UDP port 2000, gathers raw segment data, and relays it to the X-Ray API. The developer can also install and configure the AWS X-Ray SDK for Python in the application, which is a library that enables instrumenting Python code to generate and send trace data to the X-Ray daemon. Option A is not optimal because it will install the Amazon CloudWatch agent on the EC2 instances, which is a software that collects metrics and logs from EC2 instances and on-premises servers, not application performance data. Option C is not optimal because it will configure the application to write JSON-formatted logs to /var/log/cloudwatch, which is not a valid path or destination for CloudWatch logs. Option D is not optimal because it will configure the application to write trace data to
/var/log/xray, which is also not a valid path or destination for X-Ray trace data.
References: [AWS X-Ray], [Running the X-Ray Daemon on Amazon EC2]
NEW QUESTION # 625
A developer is designing a new feature for an existing application. The new feature uses an AWS Lambda function.
The developer wants to test the Lambda function safely in a development AWS account and a testing AWS account before deploying the function into a production AWS account. The developer must roll back the function if issues are found.
Which solution will meet these requirements with the LEAST operational overhead?
Answer: B
Explanation:
Using Lambda versions and aliases allows safe deployments across environments with minimal operational overhead. Each alias (e.g., dev, test, prod) can point to a specific version of the function. After testing, you can update the production alias to point to the new version, and roll back easily by redirecting the alias to a previous stable version. This approach provides safe, controlled deployments and simplified rollback.
NEW QUESTION # 626
A company developed an API application on AWS by using Amazon CloudFront. Amazon API Gateway, and AWS Lambda. The API has a minimum of four requests every second A developer notices that many API users run the same query by using the POST method. The developer wants to cache the POST request to optimize the API resources.
Which solution will meet these requirements'?
Answer: B
Explanation:
Explanation
This solution will meet the requirements by using Amazon CloudFront, which is a content delivery network (CDN) service that speeds up the delivery of web content and APIs to end users. The developer can configure the CloudFront cache, which is a set of edge locations that store copies of popular or recently accessed content close to the viewers. The developer can also update the application to return cached content based upon the default request headers, which are a set of HTTP headers that CloudFront automatically forwards to the origin server and uses to determine whether an object in an edge location is still valid. By caching the POST requests, the developer can optimize the API resources and reduce the latency for repeated queries. Option B is not optimal because it will override the cache method in the selected stage of API Gateway, which is not possible or effective as API Gateway does not support caching for POST methods by default. Option C is not optimal because it will save the latest request response in Lambda /tmp directory, which is a local storage space that is available for each Lambda function invocation, not a cache that can be shared across multiple invocations or requests. Option D is not optimal because it will save the latest request in AWS Systems Manager Parameter Store, which is a service that provides secure and scalable storage for configuration data and secrets, not a cache for API responses.
References: [Amazon CloudFront], [Caching Content Based on Request Headers]
NEW QUESTION # 627
A company runs applications on Amazon EKS containers. The company sends application logs from the containers to an Amazon CloudWatch Logs log group. The company needs to process log data in real time based on a specific error in the application logs. Which combination of steps will meet these requirements?
(Select TWO.)
Answer: B,D
Explanation:
Requirement Summary:
EKS containers send logs to CloudWatch Logs
Need to process logs in real time
Trigger logic based on a specific error in logs
Evaluate Options:
Option A: SNS topic with filter policy
SNS filter policies work on message attributes, not on CloudWatch Logs subscription filters Option B: Subscription filter on log group This enables real-time log processing You can create a subscription filter with a pattern matching specific error strings Sends matched logs to a Lambda function or Kinesis Option C: CloudWatch agent operator for trace collection Irrelevant for log processing Used for monitoring and tracing, not real-time log filtering Option D: Lambda function to process logs Once logs match the pattern, Lambda can process and act (e.g., alert, store, analyze) Option E: EventBridge rule on a schedule Not real-time Scheduled EventBridge rules are for cron-like tasks, not log stream processing Subscription filters: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/SubscriptionFilters.html Real-time log processing with Lambda: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs
/SubscriptionFilters.html#LambdaExample
Logs in EKS to CloudWatch: https://docs.aws.amazon.com/eks/latest/userguide/fargate-logging.html
NEW QUESTION # 628
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