A company is migrating a Linux-based web server group to AWS The web servers must access files in a shared file store for some content To meet the migration date, minimal changes can be made What should a solutions architect do to meet these requirements?
A. Create an Amazon S3 Standard bucket with access to the web server. B. Configure an Amazon CloudFront distribution with an Amazon S3 bucket as the origin C. Create an Amazon Elastic File System (Amazon EFS) volume and mount it on all web servers D. Configure Amazon Elastic Block Store (Amazon EBS) Provisioned IOPS SSD (io1) volumes and mount them on all web servers.
C. Create an Amazon Elastic File System (Amazon EFS) volume and mount it on all web servers
Question 102:
A solutions architect is designing a solution where users will De directed to a backup static error page it the primary website is unavailable The primary website's DNS records are hosted in Amazon Route 53 where their domain is pointing to an Application Load Balancer (ALB) Which configuration should the solutions architect use to meet the company's needs while minimizing changes and infrastructure overhead?
A. Point a Route 53 alias record to an Amazon CloudFront distribution with the ALB as one of its origins Then, create custom error pages for the distribution B. Set up a Route 53 active-passive failover configuration Direct traffic to a static error page hosted within an Amazon S3 bucket when Route 53 health checks determine that the ALB endpoint is unhealthy C. Update the Route 53 record to use a latency-based routing policy Add the backup static error page hosted within an Amazon S3 bucket to the record so the traffic is sent to the most responsive endpoints D. Set up a Route 53 active-active configuration with the ALB and an Amazon EC2 instance hosting a static error page as endpoints Route 53 will only send requests to the instance if the health checks fail for the ALB
A. Point a Route 53 alias record to an Amazon CloudFront distribution with the ALB as one of its origins Then, create custom error pages for the distribution
Explanation/Reference:
Active-passive failover
Use an active-passive failover configuration when you want a primary resource or group of resources to be available the majority of the time and you want a secondary resource or group of resources to be on standby in case all the primary resources become unavailable. When responding to queries, Route 53 includes only the healthy primary resources. If all the primary resources are unhealthy, Route 53 begins to include only the healthy secondary resources in response to DNS queries. To create an active-passive failover configuration with one primary record and one secondary record, you just create the records and specify Failover for the routing policy. When the primary resource is healthy, Route 53 responds to DNS queries using the primary record. When the primary resource is unhealthy, Route 53 responds to DNS queries using the secondary record.
How Amazon Route 53 averts cascading failures
As a first defense against cascading failures, each request routing algorithm (such as weighted and failover) has a mode of last resort. In this special mode, when all records are considered unhealthy, the Route 53 algorithm reverts to considering all records healthy. For example, if all instances of an application, on several hosts, are rejecting health check requests, Route 53 DNS servers will choose an answer anyway and return it rather than returning no DNS answer or returning an NXDOMAIN (non-existent domain) response. An application can respond to users but still fail health checks, so this provides some protection against misconfiguration. Similarly, if an application is overloaded, and one out of three endpoints fails its health checks, so that it's excluded from Route 53 DNS responses, Route 53 distributes responses between the two remaining endpoints. If the remaining endpoints are unable to handle the additional load and they fail, Route 53 reverts to distributing requests to all three endpoints.
A company hosts a popular web application. The web application connects to a database running in a private VPC subnet. The web servers must be accessible only to customers on an SSL connection. The Amazon RDS for MySQL database services be accessible only from the web servers. How should a solution architect design a solution to meet the requirements without impacting applications?
A. Create a network ACL on the web server's subnet and allow HTTPS inbound and MySQL outbound. Place both database and web servers on the same subnet. B. Open an HTTPS port on the security group for web server and set the source to 0. 0. 0.0/0. Open the MySQL port on the database security group and attach it to the MySQL instance Set the source to web server security group. C. Create a network ACL on the web server's subnet, allow HTTP, allow inbound and specify the source as 0 .0 .0 .0/0. Create a network ACL on a database subnet allow MySQL port inbound for web servers and deny all outbound traffic. D. Open the MySQL port on the security group for web servers and set the source to 0.0.0.0/0. Open the HTTPS port on the database security group and attach it to the MySQL instance. Set the source to web server security group.
B. Open an HTTPS port on the security group for web server and set the source to 0. 0. 0.0/0. Open the MySQL port on the database security group and attach it to the MySQL instance Set the source to web server security group.
Question 104:
A company is deploying a new application lo Amazon Elastic Kubernetes Service (Amazon EKS) with an AWS Fargate duster 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?
A. Create Amazon Elastic Block Store (Amazon EBS) volumes In the same Availability Zones where EKS worker nodes are placed. Register the volumes In a StorageClass object on an EKS cluster Use EBS Multi-Attach to share the data between containers B. Create an Amazon Elastic File System (Amazon EFS) tile system Register the tile system in a StorageClass object on an EKS cluster Use the same file system for all containers C. Create an Amazon Elastic Block Store (Amazon EBS) volume Register the volume In a StorageClass object on an EKS cluster Use the same volume for all containers. D. Create Amazon Elastic File System (Amazon EFS) file systems In the same Availability Zones where EKS worker nodes are placed Register the file systems in a StorageClass obied on an EKS duster Create an AWS Lambda function to synchronize the data between file systems
B. Create an Amazon Elastic File System (Amazon EFS) tile system Register the tile system in a StorageClass object on an EKS cluster Use the same file system for all containers
Question 105:
A solutions architect is designing a multi-tier application for a company The application's users upload images from a mobile device. The application generates a thumbnail of each image and returns a message to the user to confirm that the image was uploaded successfully.
The thumbnail generation can take up to 60 seconds, but the company wants to provide a faster response time to its users to notify them that the original image was received. The solutions architect must design the application to asynchronously dispatch requests to the different application tiers.
What should the solutions architect do to meet these requirements?
A. Write a custom AWS Lambda function to generate the thumbnail and alert the user. Use the image upload process as an event source to invoke the Lambda function. B. Create an AWS Step Functions workflow Configure Step Functions to handle the orchestration between the application tiers and alert the user when thumbnail generation is complete C. Create an Amazon Simple Queue Service (Amazon SQS) message queue. As images are uploaded, place a message on the SQS queue for thumbnail generation. Alert the user through an application message that the image was received D. Create Amazon Simple Notification Service (Amazon SNS) notification topics and subscriptions Use one subscription with the application to generate the thumbnail after the image upload is complete. Use a second subscription to message the user's mobile app by way of a push notification after thumbnail generation is complete.
A. Write a custom AWS Lambda function to generate the thumbnail and alert the user. Use the image upload process as an event source to invoke the Lambda function.
Question 106:
A company used an Amazon RDS for MySQL DB instance during application testing Before terminating the DB instance at the end of the test cycle a solutions architect created two backups The solutions architect created the first backup by
using the mysqldump utility to create a database dump The solutions architect created the second backup by enabling the final DB snapshot option on RDS termination.
The company is now planning for a new test cycle and wants to create a new DB instance from the most recent backup. The company has chosen a MySQL-compatible edition of Amazon Aurora to host the DB instance.
Which solutions will create the new DB instance? (Select TWO )
A. Import the RDS snapshot directly into Aurora B. Upload the RDS snapshot to Amazon S3 then import the RDS snapshot into Aurora C. Upload the database dump to Amazon S3 Then import the database dump into Aurora. D. Use AWS Database Migration Service (AWS DMS) to import the RDS snapshot into Aurora. E. Upload the database dump to Amazon S3 Then use AWS Database Migration Service (AWS DMS) to import the database dump into Aurora
A. Import the RDS snapshot directly into Aurora C. Upload the database dump to Amazon S3 Then import the database dump into Aurora.
Question 107:
A company has multiple applications that use Amazon RDS lor MySQL as is database. The company recently discovered that a new custom reporting application has Increased the number of Queries on the database. This is slowing down performance.
How should a solutions architect resolve this issue with the LEAST amount of application changes?
A. Add a secondary DB instance using Multi-AZ B. Set up a road replica ana Multi-AZ on Amazon RDS. C. Set up a standby replica and Multi-AZ on Amazon RDS D. Use caching on Amazon RDS to improve the overall performance
D. Use caching on Amazon RDS to improve the overall performance
Question 108:
A company is expecting rapid growth in the near future. A solutions architect needs to configure existing users and grant permissions to new users on AWS The solutions architect has decided to create IAM groups The solutions architect will add the new users to IAM groups based on department
Which additional action is the MOST secure way to grant permissions to the new users?
A. Apply service control policies (SCPs) to manage access permissions B. Create IAM roles that have least privilege permission Attach the roles lo the IAM groups C. Create an IAM policy that grants least privilege permission Attach the policy to the IAM groups D. Create IAM roles Associate the roles with a permissions boundary that defines the maximum permissions
C. Create an IAM policy that grants least privilege permission Attach the policy to the IAM groups
Question 109:
An online photo application lets users upload photos and perform image editing operations The application offers two classes of service free and paid Photos submitted by paid users are processed before those submitted by free users Photos are uploaded to Amazon S3 and the job information is sent to Amazon SQS.
Which configuration should a solutions architect recommend?
A. Use one SQS FIFO queue Assign a higher priority to the paid photos so they are processed first B. Use two SQS FIFO queues: one for paid and one for free Set the free queue to use short polling and the paid queue to use long polling C. Use two SQS standard queues one for paid and one for free Configure Amazon EC2 instances to prioritize polling for the paid queue over the free queue. D. Use one SQS standard queue. Set the visibility timeout of the paid photos to zero Configure Amazon EC2 instances to prioritize visibility settings so paid photos are processed first
C. Use two SQS standard queues one for paid and one for free Configure Amazon EC2 instances to prioritize polling for the paid queue over the free queue.
Explanation/Reference:
Priority: Use separate queues to provide prioritization of work.
A solution architect must migrate a Windows internet information Services (IIS) web application to AWS. The application currently relies on a file share hosted in the user's on-premises network- attached storage (NAS). The solution architected has proposed migrating the IIS web servers Which replacement to the on-promises filo share is MOST resilient and durable?
A. Migrate the file Share to Amazon RDS. B. Migrate the tile Share to AWS Storage Gateway C. Migrate the file Share to Amazon FSx dor Windows File Server. D. Migrate the tile share to Amazon Elastic File System (Amazon EFS)
C. Migrate the file Share to Amazon FSx dor Windows File Server.
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