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Question 1:

A company has a serverless website with millions of objects in an Amazon S3 bucket. The company uses the S3 bucket as the origin for an Amazon CloudFront distribution. The company did not set encryption on the S3 bucket before the objects were loaded. A solutions architect needs to enable encryption for all existing objects and for all objects that are added to the S3 bucket in the future.

Which solution will meet these requirements with the LEAST amount of effort?

A. Create a new S3 bucket. Turn on the default encryption settings for the new S3 bucket. Download all existing objects to temporary local storage. Upload the objects to the new S3 bucket.

B. Turn on the default encryption settings for the S3 bucket. Use the S3 Inventory feature to create a .csv file that lists the unencrypted objects. Run an S3 Batch Operations job that uses the copy command to encrypt those objects.

C. Create a new encryption key by using AWS Key Management Service (AWS KMS). Change the settings on the S3 bucket to use server-side encryption with AWS KMS managed encryption keys (SSE-KMS). Turn on versioning for the S3 bucket.

D. Navigate to Amazon S3 in the AWS Management Console. Browse the S3 bucket\’s objects. Sort by the encryption field. Select each unencrypted object. Use the Modify button to apply default encryption settings to every unencrypted object in the S3 bucket.

Correct Answer: B

Step 1: S3 inventory to get object list Step 2 (If needed): Use S3 Select to filter Step 3: S3 object operations to encrypt the unencrypted objects.

On the going object use default encryption.

https://spin.atomicobject.com/2020/09/15/aws-s3-encrypt-existing-objects/

Question 2:

A company is migrating its applications and databases to the AWS Cloud. The company will use Amazon Elastic Container Service (Amazon ECS), AWS Direct Connect, and Amazon RDS.

Which activities will be managed by the company\’s operational team? (Choose three.)

A. Management of the Amazon RDS infrastructure layer, operating system, and platforms

B. Creation of an Amazon RDS DB instance and configuring the scheduled maintenance window

C. Configuration of additional software components on Amazon ECS for monitoring, patch management, log management, and host intrusion detection

D. Installation of patches for all minor and major database versions for Amazon RDS

E. Ensure the physical security of the Amazon RDS infrastructure in the data center

F. Encryption of the data that moves in transit through Direct Connect

Correct Answer: BCF

B: Mentioned RDS

C: Mentioned ECS

F: Mentioned Direct connect

Question 3:

A company collects 10 GB of telemetry data daily from various machines. The company stores the data in an Amazon S3 bucket in a source data account.

The company has hired several consulting agencies to use this data for analysis. Each agency needs read access to the data for its analysts. The company must share the data from the source data account by choosing a solution that

maximizes security and operational efficiency.

Which solution will meet these requirements?

A. Configure S3 global tables to replicate data for each agency.

B. Make the S3 bucket public for a limited time. Inform only the agencies.

C. Configure cross-account access for the S3 bucket to the accounts that the agencies own.

D. Set up an IAM user for each analyst in the source data account. Grant each user access to the S3 bucket.

Correct Answer: C

Question 4:

A social media company wants to allow its users to upload images in an application that is hosted in the AWS Cloud. The company needs a solution that automatically resizes the images so that the images can be displayed on multiple device types. The application experiences unpredictable traffic patterns throughout the day. The company is seeking a highly available solution that maximizes scalability.

What should a solutions architect do to meet these requirements?

A. Create a static website hosted in Amazon S3 that invokes AWS Lambda functions to resize the images and store the images in an Amazon S3 bucket.

B. Create a static website hosted in Amazon CloudFront that invokes AWS Step Functions to resize the images and store the images in an Amazon RDS database.

C. Create a dynamic website hosted on a web server that runs on an Amazon EC2 instance. Configure a process that runs on the EC2 instance to resize the images and store the images in an Amazon S3 bucket.

D. Create a dynamic website hosted on an automatically scaling Amazon Elastic Container Service (Amazon ECS) cluster that creates a resize job in Amazon Simple Queue Service (Amazon SQS). Set up an image-resizing program that runs on an Amazon EC2 instance to process the resize jobs.

Correct Answer: A

By using Amazon S3 and AWS Lambda together, you can create a serverless architecture that provides highly scalable and available image resizing capabilities. Here\’s how the solution would work:

Set up an Amazon S3 bucket to store the original images uploaded by users.

Configure an event trigger on the S3 bucket to invoke an AWS Lambda function whenever a new image is uploaded.

The Lambda function can be designed to retrieve the uploaded image, perform the necessary resizing operations based on device requirements, and store the resized images back in the S3 bucket or a different bucket designated for resized

images.

Configure the Amazon S3 bucket to make the resized images publicly accessible for serving to users.

Question 5:

A social media company wants to store its database of user profiles, relationships, and interactions in the AWS Cloud. The company needs an application to monitor any changes in the database. The application needs to analyze the relationships between the data entities and to provide recommendations to users. Which solution will meet these requirements with the LEAST operational overhead?

A. Use Amazon Neptune to store the information. Use Amazon Kinesis Data Streams to process changes in the database.

B. Use Amazon Neptune to store the information. Use Neptune Streams to process changes in the database.

C. Use Amazon Quantum Ledger Database (Amazon QLDB) to store the information. Use Amazon Kinesis Data Streams to process changes in the database.

D. Use Amazon Quantum Ledger Database (Amazon QLDB) to store the information. Use Neptune Streams to process changes in the database.

Correct Answer: B

Question 6:

A company recently deployed a new auditing system to centralize information about operating system versions patching and installed software for Amazon EC2 instances. A solutions architect must ensure all instances provisioned through EC2 Auto Scaling groups successfully send reports to the auditing system as soon as they are launched and terminated

Which solution achieves these goals MOST efficiently?

A. Use a scheduled AWS Lambda function and run a script remotely on all EC2 instances to send data to the audit system.

B. Use EC2 Auto Scaling lifecycle hooks to run a custom script to send data to the audit system when instances are launched and terminated

C. Use an EC2 Auto Scaling launch configuration to run a custom script through user data to send data to the audit system when instances are launched and terminated

D. Run a custom script on the instance operating system to send data to the audit system Configure the script to be invoked by the EC2 Auto Scaling group when the instance starts and is terminated

Correct Answer: B

Amazon EC2 Auto Scaling offers the ability to add lifecycle hooks to your Auto Scaling groups. These hooks let you create solutions that are aware of events in the Auto Scaling instance lifecycle, and then perform a custom action on instances when the corresponding lifecycle event occurs. (https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html)

Question 7:

A company needs to migrate a legacy application from an on-premises data center to the AWS Cloud because of hardware capacity constraints. The application runs 24 hours a day. and days a week,. The application database storage continues to grow over time.

What should a solution architect do to meet these requirements MOST cost-affectivity?

A. Migrate the application layer to Amazon FC2 Spot Instances. Migrate the data storage layer to Amazon S3.

B. Migrate the application layer to Amazon EC2 Reserved Instances. Migrate the data storage layer to Amazon RDS On-Demand Instances.

C. Migrate the application layer to Amazon EC2 Reserved instances. Migrate the data storage layer to Amazon Aurora Reserved Instances.

D. Migrate the application layer to Amazon EC2 On Demand Amazon. Migrate the data storage layer to Amazon RDS Reserved instances.

Correct Answer: C

Amazon EC2 Reserved Instances allow for significant cost savings compared to On-Demand instances for long-running, steady-state workloads like this one. Reserved Instances provide a capacity reservation, so the instances are guaranteed to be available for the duration of the reservation period.

Amazon Aurora is a highly scalable, cloud-native relational database service that is designed to be compatible with MySQL and PostgreSQL. It can automatically scale up to meet growing storage requirements, so it can accommodate the application\’s database storage needs over time. By using Reserved Instances for Aurora, the cost savings will be significant over the long term.

Question 8:

A company has an AWS account used for software engineering. The AWS account has access to the company\’s on-premises data center through a pair of AWS Direct Connect connections. All non-VPC traffic routes to the virtual private gateway.

A development team recently created an AWS Lambda function through the console. The development team needs to allow the function to access a database that runs in a private subnet in the company\’s data center.

Which solution will meet these requirements?

A. Configure the Lambda function to run in the VPC with the appropriate security group.

B. Set up a VPN connection from AWS to the data center. Route the traffic from the Lambda function through the VPN.

C. Update the route tables in the VPC to allow the Lambda function to access the on-premises data center through Direct Connect.

D. Create an Elastic IP address. Configure the Lambda function to send traffic through the Elastic IP address without an elastic network interface.

Correct Answer: A

To configure a VPC for an existing function:

1.

Open the Functions page of the Lambda console.

2.

Choose a function.

3.

Choose Configuration and then choose VPC.

4.

Under VPC, choose Edit.

5.

Choose a VPC, subnets, and security groups

https://docs.aws.amazon.com/lambda/latest/dg/configuration-vpc.html#vpc-managing-eni

Question 9:

A company is reviewing a recent migration of a three-tier application to a VPC. The security team discovers that the principle of least privilege is not being applied to Amazon EC2 security group ingress and egress rules between the application tiers.

What should a solutions architect do to correct this issue?

A. Create security group rules using the instance ID as the source or destination.

B. Create security group rules using the security group ID as the source or destination.

C. Create security group rules using the VPC CIDR blocks as the source or destination.

D. Create security group rules using the subnet CIDR blocks as the source or destination.

Correct Answer: B

This way, the security team can ensure that the least privileged access is given to the application tiers by allowing only the necessary communication between the security groups. For example, the web tier security group should only allow

incoming traffic from the load balancer security group and outgoing traffic to the application tier security group. This approach provides a more granular and secure way to control traffic between the different tiers of the application and also

allows for easy modification of access if needed.

It\’s also worth noting that it\’s good practice to minimize the number of open ports and protocols, and use security groups as a first line of defense, in addition to network access control lists (ACLs) to control traffic between subnets.

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/security-group-rules.html

Question 10:

A company collects data from a large number of participants who use wearabledevices.The company stores the data in an Amazon DynamoDB table and uses applications to analyze the data. The data workload is constant and predictable. The company wants to stay at or below its forecasted budget for DynamoDB.

Whihc solution will meet these requirements MOST cost-effectively?

A. Use provisioned mode and DynamoDB Standard-Infrequent Access (DynamoDB Standard-IA). Reserve capacity for the forecasted workload.

B. Use provisioned mode. Specify the read capacity units (RCUs) and write capacity units (WCUs).

C. Use on-demand mode. Set the read capacity units (RCUs) and write capacity units (WCUs) high enough to accommodate changes in the workload.

D. Use on-demand mode. Specify the read capacity units (RCUs) and write capacity units (WCUs) with reserved capacity.

Correct Answer: B

Question 11:

A company seeks a storage solution for its application The solution must be highly available and scalable. The solution also must function as a file system, be mountable by multiple Linux instances in AWS and on premises through native protocols, and have no minimum size requirements. The company has set up a Site-to-Site VPN for access from its on-premises network to its VPC.

Which storage solution meets these requirements?

A. Amazon FSx Multi-AZ deployments

B. Amazon Elastic Block Store (Amazon EBS) Multi-Attach volumes

C. Amazon Elastic File System (Amazon EFS) with multiple mount targets

D. Amazon Elastic File System (Amazon EFS) with a single mount target and multiple access points

Correct Answer: C

Amazon EFS is a fully managed file system that can be mounted by multiple Linux instances in AWS and on premises through native protocols such as NFS and SMB. Amazon EFS has no minimum size requirements and can scale up and

down automatically as files are added and removed. Amazon EFS also supports high availability and durability by allowing multiple mount targets in different Availability Zones within a region. Amazon EFS meets all the requirements of the

Question 12:

A company runs a container application by using Amazon Elastic Kubernetes Service (Amazon EKS). The application includes microservices that manage customers and place orders. The company needs to route incoming requests to the appropriate microservices.

Which solution will meet this requirement MOST cost-effectively?

A. Use the AWS Load Balancer Controller to provision a Network Load Balancer.

B. Use the AWS Load Balancer Controller to provision an Application Load Balancer.

C. Use an AWS Lambda function to connect the requests to Amazon EKS.

D. Use Amazon API Gateway to connect the requests to Amazon EKS.

Correct Answer: D

API Gateway is a fully managed service that makes it easy for you to create, publish, maintain, monitor, and secure APIs at any scale. API Gateway provides an entry point to your microservices

Question 13:

A company uses a 100 GB Amazon RDS for Microsoft SQL Server Single-AZ DB instance in the us-east-1 Region to store customer transactions. The company needs high availability and automate recovery for the DB instance.

The companu must also run reports on the RDS database several times a year. The report process causes transactions to take longer than usual to post to the customer` accounts.

Which combination of steps will meet these requirements? (Select TWO.)

A. Modify the DB instance from a Single-AZ DB instance to a Multi-AZ deployment.

B. Take a snapshot of the current DB instance. Restore the snapshot to a new RDS deployment in another Availability Zone.

C. Create a read replica of the DB instance in a different Availability Zone. Point All requests for reports to the read replica.

D. Migrate the database to RDS Custom.

E. Use RDS Proxy to limit reporting requests to the maintenance window.

Correct Answer: AC

https://medium.com/awesome-cloud/aws-difference-between-multi-az-and-read-replicas-in-amazon-rds-60fe848ef53a

Question 14:

A company wants to improve its ability to clone large amounts of production data into a test environment in the same AWS Region. The data is stored in Amazon EC2 instances on Amazon Elastic Block Store (Amazon EBS) volumes. Modifications to the cloned data must not affect the production environment. The software that accesses this data requires consistently high I/O performance.

A solutions architect needs to minimize the time that is required to clone the production data into the test environment.

Which solution will meet these requirements?

A. Take EBS snapshots of the production EBS volumes. Restore the snapshots onto EC2 instance store volumes in the test environment.

B. Configure the production EBS volumes to use the EBS Multi-Attach feature. Take EBS snapshots of the production EBS volumes. Attach the production EBS volumes to the EC2 instances in the test environment.

C. Take EBS snapshots of the production EBS volumes. Create and initialize new EBS volumes. Attach the new EBS volumes to EC2 instances in the test environment before restoring the volumes from the production EBS snapshots.

D. Take EBS snapshots of the production EBS volumes. Turn on the EBS fast snapshot restore feature on the EBS snapshots. Restore the snapshots into new EBS volumes. Attach the new EBS volumes to EC2 instances in the test environment.

Correct Answer: D

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-fast-snapshot-restore.html Amazon EBS fast snapshot restore (FSR) enables you to create a volume from a snapshot that is fully initialized at creation. This eliminates the latency of I/O operations on a block when it is accessed for the first time. Volumes that are created using fast snapshot restore instantly deliver all of their provisioned performance.

Question 15:

A telemarketing company is designing its customer call center functionality on AWS. The company needs a solution that provides multiples speaker recognition and generates transcript files The company wants to query the transcript files to analyze the business patterns The transcript files must be stored for 7 years for auditing piloses.

Which solution will meet these requirements?

A. Use Amazon Recognition for multiple speaker recognition. Store the transcript files in Amazon S3 Use machine teaming models for transcript file analysis

B. Use Amazon Transcribe for multiple speaker recognition. Use Amazon Athena tot transcript file analysts

C. Use Amazon Translate lor multiple speaker recognition. Store the transcript files in Amazon Redshift Use SQL queues lor transcript file analysis

D. Use Amazon Recognition for multiple speaker recognition. Store the transcript files in Amazon S3 Use Amazon Textract for transcript file analysis

Correct Answer: B

Amazon Transcribe now supports speaker labeling for streaming transcription. Amazon Transcribe is an automatic speech recognition (ASR) service that makes it easy for you to convert speech-to-text. In live audio transcription, each stream of audio may contain multiple speakers. Now you can conveniently turn on the ability to label speakers, thus helping to identify who is saying what in the output transcript.

https://aws.amazon.com/about-aws/whats-new/2020/08/amazon-transcribe-supports-speaker-labeling-streaming-transcription/