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The AWS SAA-C02 exam covers a wide range of topics related to AWS services and solutions, including designing highly available, fault-tolerant, and scalable systems on AWS, selecting the appropriate AWS services based on business requirements, and designing and deploying enterprise-wide scalable operations on AWS. Candidates are also tested on their knowledge of AWS security practices, compliance, and governance, as well as their ability to identify and resolve common issues related to AWS architecture.
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A company would like to implement a serverless application by using Amazon API Gateway, AWS Lambda, and Amazon DynamoDB. They deployed a proof of concept and stated that the average response time is greater than what their upstream services can accept. Amazon CloudWatch metrics did not indicate any issues with DynamoDB but showed that some Lambda functions were hitting their timeout.
Which of the following actions should the Solutions Architect consider to improve performance? (Choose two.)
A. Enable API cache on the appropriate stage in Amazon API Gateway, and override the TTL for individual methods that require a lower TTL than the entire stage.
B. Increase the amount of memory and adjust the timeout on the Lambda function. Complete performance testing to identify the ideal memory and timeout configuration for the Lambda function.
C. Create an Amazon ElastiCache cluster running Memcached, and configure the Lambda function for VPC integration with access to the Amazon ElastiCache cluster.
D. Configure the AWS Lambda function to reuse containers to avoid unnecessary startup time.
E. Increase the amount of CPU, and adjust the timeout on the Lambda function. Complete performance testing to identify the ideal CPU and timeout configuration for the Lambda function.
Answer: A,B
NEW QUESTION # 448
A company hosts an application on Amazon EC2 instances that are part of a target group behind an Application Load Balancer (ALB). The company has attached a security group to the ALB.
During a recent review of application logs, the company found many unauthorized login attempts from IP addresses that belong to countries outside the company's normal user base. The company wants to allow traffic only from the United States and Australia.
A. Edit the default network ACL to block IP addresses from outside of the allowed countries.
B. Configure the ALB security group to allow the IP addresses of company employees. Edit the default network ACL to block IP addresses from outside of the allowed countries.
C. Use a host-based firewall on the EC2 instances to block IP addresses from outside of the allowed countries. Configure the ALB security group to allow the IP addresses of company employees.
D. Create a geographic match rule in AWS WAF. Attach the rule to the ALB.
Answer: D
Explanation:
Why Option B is Correct:
AWS WAF: Provides a simple way to create geographic match rules to block or allow traffic based on country IP ranges.
Least Operational Overhead: Attaching the WAF rule to the ALB ensures centralized control without modifying ACLs or instance firewalls.
Why Other Options Are Not Ideal:
Option A: Network ACLs operate at the subnet level and can become complex to manage for dynamic or evolving IP ranges.
Option C: Managing IP-based rules in security groups and ACLs lacks scalability and does not provide country-based filtering.
Option D: Configuring host-based firewalls increases operational overhead and does not leverage AWS- managed solutions.
AWS References:
AWS WAF Geomatch:AWS Documentation - WAF Geomatch
NEW QUESTION # 449
You need to create a JSON-formatted text file for AWS CloudFormation. This is your first template and the only thing you know is that the templates include several major sections but there is only one that is required for it to work. What is the only section required?
A. Outputs
B. Resources
C. Conditions
D. Mappings
Answer: B
Explanation:
AWS CloudFormation is a service that helps you model and set up your Amazon Web Services resources so that you can spend less time managing those resources and more time focusing on your applications that run in AWS. You create a template that describes all the AWS resources that you want (like Amazon EC2 instances or Amazon RDS DB instances), and AWS CloudFormation takes care of provisioning and configuring those resources for you.
A template is a JSON-formatted text file that describes your AWS infrastructure. Templates include several major sections.
The Resources section is the only section that is required.
The first character in the template must be an open brace ({), and the last character must be a closed brace (}). The following template fragment shows the template structure and sections.
Reference: http://docs.aws.amazon.com/AWSCl ... mplate-anatomy.html
NEW QUESTION # 450
When an EC2 EBS-backed (EBS root) instance is stopped, what happens to the data on any ephemeral store volumes?
A. Data will be deleted and will no longer be accessible.
B. Data is automatically saved as an EBS snapshot.
C. Data is automatically saved in an EBS volume.
D. Data is unavailable until the instance is restarted.
Answer: A
NEW QUESTION # 451
A company is using an Amazon S3 bucket to store data uploaded by different departments from multiple locations. During an AWS Well-Architected review, the financial manager notices that 10 TB of S3 Standard storage data has been charged each month. However, in the AWS Management Console for Amazon S3, using the command to select all files and folders shows a total size of 5 TB.
What are the possible causes for this difference? (Choose two.)
A. The S3 bucker has AWS Key Management Service (AWS KMS) enabled.
B. Some files are stored with deduplication.
C. The S3 bucket has versioning enabled.
D. The S3 bucket has Intelligent-Tiering enabled.
E. There are incomplete S3 multipart uploads.
Answer: B,C
NEW QUESTION # 452
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