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| Section | Weight | Objectives |
|---|---|---|
| Security | 26% | - Manage sensitive data in application code
|
| Troubleshooting and Optimization | 18% | - Instrument code for observability
|
| Deployment | 24% | - Deploy code by using AWS CI/CD services
|
| Development with AWS Services | 32% | - Use data stores in application development
|
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NEW QUESTION # 469
A developer is working on an ecommerce website The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available How can the developer update the application to meet these requirements with MINIMUM changes?
Answer: A
Explanation:
* Centralized Logging Benefits:Centralized logging is essential for operational visibility in scalable systems, especially those using multiple EC2 instances like our e-commerce website. CloudWatch provides this capability, along with other monitoring features.
* CloudWatch Agent:This is the best way to send custom application logs from EC2 instances to CloudWatch. Here's the process:
* Install the CloudWatch agent on each EC2 instance.
* Configure the agent with a configuration file, specifying:
* Which log files to collect.
* The format in which to send logs to CloudWatch (e.g., JSON).
* The specific CloudWatch Logs log group and log stream for these logs.
* Viewing and Analyzing Logs:Once the agent is pushing logs, use the CloudWatch Logs console or API:
* View and search the logs across all instances.
* Set up alarms based on log events.
* Use CloudWatch Logs Insights for sophisticated queries and analysis.
NEW QUESTION # 470
A development team maintains a web application by using a single AWS CloudFormation template. The template defines web servers and an Amazon RDS database. The team uses the Cloud Formation template to deploy the Cloud Formation stack to different environments.
During a recent application deployment, a developer caused the primary development database to be dropped and recreated. The result of this incident was a loss of data. The team needs to avoid accidental database deletion in the future.
Which solutions will meet these requirements? (Choose two.)
Answer: A,C
Explanation:
AWS CloudFormation is a service that enables developers to model and provision AWS resources using templates. The developer can add a CloudFormation Deletion Policy attribute with the Retain value to the database resource. This will prevent the database from being deleted when the stack is deleted or updated. The developer can also update the CloudFormation stack policy to prevent updates to the database. This will prevent accidental changes to the database configuration or properties.
NEW QUESTION # 471
A company hosts a client-side web application for one of its subsidiaries on Amazon S3. The web application can be accessed through Amazon CloudFront from https://www.example.com. After a successful rollout, the company wants to host three more client-side web applications for its remaining subsidiaries on three separate S3 buckets.
To achieve this goal, a developer moves all the common JavaScript files and web fonts to a central S3 bucket that serves the web applications. However, during testing, the developer notices that the browser blocks the JavaScript files and web fonts.
What should the developer do to prevent the browser from blocking the JavaScript files and web fonts?
Answer: B
Explanation:
Browsers enforce the Same-Origin Policy, which restricts web pages from requesting resources (like JavaScript files, fonts, and other assets) from a different domain/origin unless the target explicitly allows it.
When the developer moved shared JavaScript and web fonts into a separate "central" S3 bucket, the applications likely began fetching these assets from a different origin than the app's primary origin (for example, different domain, subdomain, or CloudFront distribution). As a result, the browser blocks those requests unless the response includes the appropriate CORS headers.
AWS documentation for Amazon S3 explains that to allow cross-origin requests from browsers, you must configure Cross-Origin Resource Sharing (CORS) on the S3 bucket that serves the resources. A CORS configuration defines allowed origins, methods (such as GET), and headers. For fonts in particular, browsers are strict and commonly require CORS headers to load fonts across origins.
Option C directly addresses this by adding a CORS policy to the central bucket, allowing the subsidiary application origins to retrieve JS and font files without being blocked.
Option B (bucket policy) controls authorization at the AWS request level, but it does not instruct browsers to allow cross-origin access. Even if the request is authorized, the browser can still block it if CORS headers are missing.
Option A (access points) is also about access management and does not solve browser CORS enforcement.
Option D (Content-MD5) is for integrity checking and is unrelated to cross-origin browser blocking.
NEW QUESTION # 472
A developer is building an application that uses Amazon ECS on AWS Fargate to deploy to multiple AWS Regions. The application must have access to database credentials that are stored as a secret in AWS Secrets Manager. The developer must configure the secret to ensure secure and low-latency access in each Region. Which solution will meet these requirements?
Answer: D
Explanation:
Replicating the Secrets Manager secret to each required Region provides secure, local access for the Fargate tasks and reduces cross-Region latency. Using the AWS managed key for Secrets Manager keeps encryption management simple while maintaining secure access to the replicated secrets.
NEW QUESTION # 473
A developer creates a serverless application. The application includes AWS Lambda functions that process data changes and Amazon DynamoDB tables.
The developer needs to deploy updates to the application automatically each time the developer completes a set of code changes. The developer must use existing continuous integration and continuous delivery (CI/CD) pipeline tools to deploy updates. The developer also needs to test updates locally before committing code.
Which combination of steps will meet these requirements in the MOST in the operationally efficient way? (Choose two.)
Answer: B,E
Explanation:
Defining the application with AWS SAM templates provides infrastructure as code that is purpose- built for serverless and supports local testing (for example, running and testing functions locally before committing changes). Using a build container image that includes the required runtime makes the CI/CD pipeline consistent and repeatable across environments, and the pipeline can run the standard AWS SAM CLI build/package/deploy commands automatically on each change.
NEW QUESTION # 474
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