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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design Secure Architectures | 30% | - Design secure workloads and applications
|
| Topic 2: Design Cost-Optimized Architectures | 20% | - Design cost-effective compute and network solutions
|
| Topic 3: Design High-Performing Architectures | 24% | - Design high-performance storage solutions
|
| Topic 4: Design Resilient Architectures | 26% | - Design highly available and fault-tolerant architectures
|
形式に関するSAA-C03試験問題の3つの異なるバージョンがあります：PDF、ソフトウェア、オンラインAPP。内容は同じですが、さまざまな形式が実際にお客様に多くの利便性をもたらします。 PDFバージョンのSAA-C03試験の練習問題を印刷して、どこにいても受験できるようにすることができます。また、ソフトウェアバージョンは実際の試験環境をシミュレートし、オフラインでの練習をサポートできます。また、APPオンラインはあらゆる種類の電子機器に適用できます。誰であっても、SAA-C03準備の質問を通じて、あなたの目標を達成するために最善を尽くすことができると信じています！
質問 # 619
A company has 15 employees. The company stores employee start dates in an Amazon DynamoDB table. The company wants to send an email message to each employee on the day of the employee's work anniversary. Which solution will meet these requirements with the MOST operational efficiency?
正解：D
解説：
AWS Lambda for Operational Efficiency:
AWS Lambdais a serverless compute service that allows you to run code without provisioning or managing servers. It automatically scales based on the number of invocations and eliminates the need to maintain and monitor EC2 instances, making it far more operationally efficient compared to running a cron job on EC2.
By using Lambda, you pay only for the compute time that your function uses. This is especially beneficial when dealing with lightweight tasks, such as scanning a DynamoDB table and sending email messages once a day.
Amazon DynamoDB:
DynamoDBis a highly scalable, fully managed NoSQL database. The table stores employee start dates, and scanning the table to find the employees who have a work anniversary on the current day is a lightweight operation. Lambda can easily perform this operation using theDynamoDB Scan APIor queries, depending on how the data is structured.
Amazon SNS for Email Notifications:
Amazon Simple Notification Service (SNS)is a fully managed messaging service that supports sending notifications to a variety of endpoints, including email. SNS is well-suited for sendingout email messages to employees, as it can handle the fan-out messaging pattern (sending the same message to multiple recipients).
In this scenario, once Lambda identifies employees who have their work anniversaries, it can use SNS to send the email notifications efficiently. SNS integrates seamlessly with Lambda, and sending emails via SNS is a common pattern for this type of use case.
Event Scheduling:
To automate this daily task, you can schedule the Lambda function usingAmazon EventBridge (formerly CloudWatch Events). EventBridge can trigger the Lambda function on a daily schedule (cron-like scheduling). This avoids the complexity and operational overhead of manually setting up cron jobs on EC2 instances.
Why Not EC2 or SQS?
Option A & B suggest running a cron job on anAmazon EC2instance. This approach requires you to manage, scale, and patch the EC2 instance, which increases operational overhead. Lambda is a better choice because it automatically scales and doesn't require server management. Amazon Simple Queue Service (SQS) is ideal for decoupling distributed systems but isn't necessary in this context because the goal is to send notifications to employees on their work anniversaries.
SQS adds unnecessary complexity for this straightforward use case, where SNS is the simpler and more efficient solution.
質問 # 620
A company sells ringtones created from clips of popular songs. The files containing the ringtones are stored in Amazon S3 Standard and are at least 128 KB in size. The company has millions of files, but downloads are infrequent for ringtones older than 90 days. The company needs to save money on storage while keeping the most accessed files readily available for its users.
Which action should the company take to meet these requirements MOST cost-effectively?
正解：A
質問 # 621
A company uses a set of Amazon EC2 instances to host a website. The website uses an Amazon S3 bucket to store images and media files.
The company wants to automate website infrastructure creation to deploy the website to multiple AWS Regions. The company also wants to provide the EC2 instances access to the S3 bucket so the instances can store and access data by using AWS Identity and Access Management (1AM).
Which solution will meet these requirements MOST securely?
正解：D
解説：
The most secure solution for allowing EC2 instances to access an S3 bucket is by using IAM roles. An IAM role can be created with an access policy that grants the required permissions (e.g., to read and write to the S3 bucket). The IAM role is then associated with the EC2 instances through an IAM instance profile.
By associating the role with the instances, the EC2 instances can securely assume the role and receive temporary credentials via the instance metadata service. This avoids the need to store credentials (such as access keys) on the instances or within the application, enhancing security and reducing the risk of credentials being exposed.
AWS CloudFormation can be used to automate the creation of the entire infrastructure, including EC2 instances, IAM roles, and associated policies.
AWS References:
* IAM Roles for EC2 Instances outlines the use of IAM roles for secure access to AWS services.
* AWS CloudFormation User Guide details how to create and manage resources using CloudFormation templates.
Why the other options are incorrect:
* A. Save IAM access key in UserData: This is insecure because it involves storing long-term credentials in the instance user data, which can be exposed.
* B. Store access keys in S3: This is also insecure, as it involves managing and distributing long-term credentials, which should be avoided.
* D. Retrieve access keys via a script: This approach is unnecessarily complex and less secure than using IAM roles, which provide temporary credentials automatically.
質問 # 622
A web application is hosted in an Auto Scaling group of EC2 instances deployed across multiple Availability Zones behind an Application Load Balancer. You need to implement an SSL solution for your system to improve its security which is why you requested an SSL/TLS certificate from a third-party certificate authority (CA).
Where can you safely import the SSL/TLS certificate of your application? (Select TWO.)
正解：D、E
解説：
If you got your certificate from a third-party CA, import the certificate into ACM or upload it to the IAM certificate store. Hence, AWS Certificate Manager and IAM certificate store are the correct answers.
ACM lets you import third-party certificates from the ACM console, as well as programmatically. If ACM is not available in your region, use AWS CLI to upload your third-party certificate to the IAM certificate store.
A private S3 bucket with versioning enabled and an S3 bucket configured with server-side encryption with customer-provided encryption keys (SSE-C) are both incorrect as S3 is not a suitable service to store the SSL certificate.
CloudFront is incorrect. Although you can upload certificates to CloudFront, it doesn't mean that you can import SSL certificates on it. You would not be able to export the certificate that you have loaded in CloudFront nor assign them to your EC2 or ELB instances as it would be tied to a single CloudFront distribution.
Explanation:
Reference:
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/cnames-and-https-procedures.
html#cnames-and-https-uploading-certificates
Check out this Amazon CloudFront Cheat Sheet:
https://tutorialsdojo.com/amazon-cloudfront/
AWS Security Services Overview - Secrets Manager, ACM, Macie:
https://www.youtube.com/watch?v=ogVamzF2Dzk
Tutorials Dojo's AWS Certified Solutions Architect Associate Exam Study Guide:
https://tutorialsdojo.com/aws-certified-solutions-architect-associate-saa-c02/
質問 # 623
A company is deploying a new application to Amazon Elastic Kubernetes Service (Amazon EKS) with an AWS Fargate cluster. The application needs a storage solution for data persistence. The solution must be highly available and fault tolerant. The solution also must be shared between multiple application containers.
Which solution will meet these requirements with the LEAST operational overhead?
正解：D
解説：
Amazon EFS is a fully managed, elastic, and scalable file system that can be shared between multiple containers. It provides high availability and fault tolerance by replicating data across multiple Availability Zones. Amazon EFS is compatible with Amazon EKS and AWS Fargate, and can be registered in a StorageClass object on an EKS cluster. Amazon EBS volumes are not supported by AWS Fargate, and cannot be shared between multiple containers without using EBS Multi-Attach, which has limitations and performance implications. EBS Multi-Attach also requires the volumes to be in the same Availability Zone as the worker nodes, which reduces availability and fault tolerance. Synchronizing data between multiple EFS file systems using AWS Lambda is unnecessary, complex, and prone to errors. References:
Amazon EFS Storage Classes
Amazon EKS Storage Classes
Amazon EBS Multi-Attach
質問 # 624
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