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Amazon AWS Certified Solutions Architect - Associate (SAA-C03) Exam Sample Questions (Q748-Q753):

NEW QUESTION # 748
A solutions architect is creating a new VPC design There are two public subnets for the load balancer, two private subnets for web servers and two private subnets for MySQL The web servers use only HTTPS The solutions architect has already created a security group tor the load balancer allowing port 443 from 0 0 0 0/0 Company policy requires that each resource has the teas! access required to still be able to perform its tasks Which additional configuration strategy should the solutions architect use to meet these requirements?

A. Create a network ACL for the web servers and allow port 443 from 0.0.0.0/0 Create a network ACL (or the MySQL servers and allow port 3306 from the web servers security group
B. Create a network ACL 'or the web servers and allow port 443 from the load balancer Create a network ACL for the MySQL servers and allow port 3306 from the web servers security group
C. Create a security group for the web servers and allow port 443 from 0.0.0.0/0 Create a security group for the MySQL servers and allow port 3306 from the web servers security group
D. Create a security group for the web servers and allow port 443 from the load balancer Create a security group for the MySQL servers and allow port 3306 from the web servers security group

Answer: D

Explanation:
Explanation
This answer is correct because it provides a resilient and durable replacement for the on-premises file share that is compatible with Windows IIS web servers. Amazon FSx for Windows File Server is a fully managed service that provides shared file storage built on Windows Server. It supports the SMB protocol and integrates with Microsoft Active Directory, which enables seamless access and authentication for Windows-based applications. Amazon FSx for Windows File Server also offers the following benefits:
* Resilience: Amazon FSx for Windows File Server can be deployed in multiple Availability Zones, which provides high availability and failover protection. It also supports automatic backups and restores, as well as self-healing features that detect and correct issues.
* Durability: Amazon FSx for Windows File Server replicates data within and across Availability Zones, and stores data on highly durable storage devices. It also supports encryption at rest and in transit, as well as file access auditing and data deduplication.
* Performance: Amazon FSx for Windows File Server delivers consistent sub-millisecond latencies and high throughput for file operations. It also supports SSD storage, native Windows features such as Distributed File System (DFS) Namespaces and Replication, and user-driven performance scaling.
By configuring the Amazon FSx file share to use an AWS KMS CMK to encrypt the images in the file share, the company can protect the images from unauthorized access and comply with company policy. By using NTFS permission sets on the images, the company can prevent accidental deletion of the images by restricting who can modify or delete them.
References:
* Amazon FSx for Windows File Server
* Using Microsoft Windows file shares

NEW QUESTION # 749
A company's website hosted on Amazon EC2 instances processes classified data stored in Amazon S3 Due to security concerns, the company requires a pnvate and secure connection between its EC2 resources and Amazon S3.
Which solution meets these requirements?

A. Set up an access key ID and a secret access key to access the S3 bucket.
B. Set up an 1AM policy to grant read-write access to the S3 bucket.
C. Set up S3 bucket policies to allow access from a VPC endpomt.
D. Set up a NAT gateway to access resources outside the private subnet.

Answer: C

Explanation:
This solution meets the following requirements:
* It is private and secure, as it allows the EC2 instances to access the S3 bucket without using the public internet. A VPC endpoint is a gateway that enables you to create a private connection between your VPC and another AWS service, such as S3, within the same Region. A VPC endpoint for S3 provides secure and direct access to S3 buckets and objects using private IP addresses from your VPC. You can also use VPC endpoint policies and S3 bucket policies to control the access to the S3 resources based on the endpoint, the IAM user, the IAM role, or the source IP address.
* It is simple and scalable, as it does not require any additional AWS services, gateways, or NAT devices.
A VPC endpoint for S3 is a fully managed service that scales automatically with the network traffic.
You can create a VPC endpoint for S3 with a few clicks in the VPC console or with a simple API call.
You can also use the same VPC endpoint to access multiple S3 buckets in the same Region.
References:
* VPC Endpoints - Amazon Virtual Private Cloud
* Gateway VPC endpoints - Amazon Virtual Private Cloud
* Using Amazon S3 with interface VPC endpoints - Amazon Simple Storage Service
* Using Amazon S3 with gateway VPC endpoints - Amazon Simple Storage Service

NEW QUESTION # 750
A leading IT consulting company has an application which processes a large stream of financial data by an Amazon ECS Cluster then stores the result to a DynamoDB table. You have to design a solution to detect new entries in the DynamoDB table then automatically trigger a Lambda function to run some tests to verify the processed data.
What solution can be easily implemented to alert the Lambda function of new entries while requiring minimal configuration change to your architecture?

A. Invoke the Lambda functions using SNS each time that the ECS Cluster successfully processed financial data.
B. Use CloudWatch Alarms to trigger the Lambda function whenever a new entry is created in the DynamoDB table.
C. Enable DynamoDB Streams to capture table activity and automatically trigger the Lambda function.
D. Use Systems Manager Automation to detect new entries in the DynamoDB table then automatically invoke the Lambda function for processing.

Answer: C

Explanation:
Amazon DynamoDB is integrated with AWS Lambda so that you can create triggers-pieces of code that automatically respond to events in DynamoDB Streams. With triggers, you can build applications that react to data modifications in DynamoDB tables.
If you enable DynamoDB Streams on a table, you can associate the stream ARN with a Lambda function that you write. Immediately after an item in the table is modified, a new record appears in the table's stream. AWS Lambda polls the stream and invokes your Lambda function synchronously when it detects new stream records.

You can create a Lambda function which can perform a specific action that you specify, such as sending a notification or initiating a workflow. For instance, you can set up a Lambda function to simply copy each stream record to persistent storage, such as EFS or S3, to create a permanent audit trail of write activity in your table.
Suppose you have a mobile gaming app that writes to a TutorialsDojoCourses table. Whenever the TopCourse attribute of the TutorialsDojoScores table is updated, a corresponding stream record is written to the table's stream. This event could then trigger a Lambda function that posts a congratulatory message on a social media network. (The function would simply ignore any stream records that are not updates to TutorialsDojoCourses or that do not modify the TopCourse attribute.) Hence, enabling DynamoDB Streams to capture table activity and automatically trigger the Lambda function is the correct answer because the requirement can be met with minimal configuration change using DynamoDB streams which can automatically trigger Lambda functions whenever there is a new entry.
Using CloudWatch Alarms to trigger the Lambda function whenever a new entry is created in the DynamoDB table is incorrect because CloudWatch Alarms only monitor service metrics, not changes in DynamoDB table data.
Invoking the Lambda functions using SNS each time that the ECS Cluster successfully processed financial data is incorrect because you don't need to create an SNS topic just to invoke Lambda functions. You can enable DynamoDB streams instead to meet the requirement with less configuration.
Using Systems Manager Automation to detect new entries in the DynamoDB table then automatically invoking the Lambda function for processing is incorrect because the Systems Manager Automation service is primarily used to simplify common maintenance and deployment tasks of Amazon EC2 instances and other AWS resources. It does not have the capability to detect new entries in a DynamoDB table.
References:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.Lambda.html
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html Check out this Amazon DynamoDB cheat sheet: https://tutorialsdojo.com/amazon-dynamodb/

NEW QUESTION # 751
A financial service company has a two-tier consumer banking application. The frontend serves static web content. The backend consists of APIs. The company needs to migrate the frontend component to AWS. The backend of the application will remain on premises. The company must protect the application from common web vulnerabilities and attacks.
Which solution will meet these requirements with the LEAST operational overhead?

A. Deploy the frontend as a static website based on an Amazon S3 bucket. Use an Amazon API Gateway REST API and a set of Amazon EC2 instances to invoke the on-premises APIs. Associate AWS WAF rules with the REST API and the S3 bucket.
B. Deploy the frontend as an Amazon CloudFront distribution that has multiple origins. Configure one origin to be an Amazon S3 bucket that serves the static web content. Configure a second origin to route traffic to the on-premises APIs based on the URL pattern. Associate AWS WAF rules with the distribution.
C. Migrate the frontend to Amazon EC2 instances. Deploy an Application Load Balancer (ALB) in front of the instances. Use the instances to invoke the on-premises APIs. Associate AWS WAF rules with the instances.
D. Migrate the frontend to Amazon EC2 instances. Deploy a Network Load Balancer (NLB) in front of the instances. Use the instances to invoke the on-premises APIs. Create an AWS Network Firewall instance. Route all traffic through the Network Firewall instance.

Answer: B

Explanation:
Comprehensive Explanation:Deploying the frontend as a CloudFront distribution with multiple origins provides an efficient and scalable solution. Using WAF rules with CloudFront protects against web vulnerabilities, while the multi-origin configuration allows traffic routing to the on-premises backend APIs.
This approach minimizes operational overhead compared to managing EC2 instances.
References:
* Amazon CloudFront Features
* AWS WAF Integration with CloudFront

NEW QUESTION # 752
A company currently stores 5 TB of data in on-premises block storage systems. The company's current storage solution provides limited space for additional data. The company runs applications on premises that must be able to retrieve frequently accessed data with low latency. The company requires a cloud-based storage solution.
Which solution will meet these requirements with the MOST operational efficiency?

A. Use an AWS Storage Gateway Tape Gateway. Integrate Tape Gateway with the on-premises applications to store virtual tapes in Amazon S3.
B. Use an AWS Storage Gateway Volume Gateway with stored volumes as iSCSI targets.
C. Use Amazon S3 File Gateway Integrate S3 File Gateway with the on-premises applications to store and directly retrieve files by using the SMB file system.
D. Use an AWS Storage Gateway Volume Gateway with cached volumes as iSCSt targets.

Answer: D

Explanation:
The company needs a cloud-based storage solution for frequently accessed data with low latency, while retaining their current on-premises infrastructure for some data storage. AWS Storage Gateway's Volume Gateway with cached volumes is the most appropriate solution for this scenario.
Detailed Explanation:
* AWS Storage Gateway - Volume Gateway (Cached Volumes):
* Volume Gateway with cached volumes allows you to store frequently accessed data in the AWS Cloud while keeping the most recently accessed data cached locally on-premises. This ensures low-latency access to active data while providing scalability for the rest of the data in the cloud.
* The cached volume option stores the primary data in Amazon S3 but caches frequently accessed data locally, ensuring fast access. This configuration is well-suited for applications that require fast access to frequently used data but can tolerate cloud-based storage for the rest.
* Since the company is facing limited on-premises storage, cached volumes provide an ideal solution, as they reduce the need for additional on-premises storage infrastructure.
* Why Not the Other Options?:
* Option A (S3 File Gateway): S3 File Gateway provides a file-based interface (SMB/NFS) for storing data directly in S3. While it is great for file storage, the company's need for block-level storage with iSCSI targets makes Volume Gateway a better fit.
* Option C (Volume Gateway - Stored Volumes): Stored volumes keep all the data on-premises and asynchronously back up to AWS. This would not address the company's storage limitations since they would still need substantial on-premises storage.
* Option D (Tape Gateway): Tape Gateway is designed for archiving and backup, not for frequently accessed low-latency data.
AWS References:
* AWS Storage Gateway - Volume Gateway

NEW QUESTION # 753
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