EMT Practice Test

1. Question Content...

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Question1: A company is using AWS CloudFormation as its deployment tool for all application. It stages all application binaries and templates within Amazon S3 bucket with versioning enable Developers have access to an Amazon EC2 instance that hosts the integrated development (IDE). The developers download the application binaries from Amazon S3 to the EC2 instance, make changes, and upload the binaries to an S3 bucket after running the unit locally. The developers want to improve the existing deployment mechanism and implement Ci/CD using AWS CodePipeline.
The developers have the following requirements:
* Use AWS CodeCommit for source control
* Automate unit testing and security scanning.
* Alert the developers when unit tests fail
* Turn application features on and off, and customize deployment dynamically as part of Ci/CD.
* Have the lead developer provide approval before deploying an application.
Which solution will meet these requirements?

Question2: A company has more than 100 AWS accounts, with one VPC per account, that need outbound HTTPS connectivity to the internet. The current design contains one NAT gateway per Availability Zone (AZ) in each VPC. To reduce costs and obtain information about outbound traffic, management has asked for a new architecture for internet access.
Which solution will meet the current needs, and continue to grow as new accounts are provisioned, while reducing costs?

Question3: A company is finalizing the architecture for its backup solution for applications running on AWS. All of the applications run on AWS and use at least two Availability Zones in each tier.
Company policy requires IT to durably store nightly backups for all its data in at least two locations:
production and disaster recovery. The locations must be in different geographic regions. The company also needs the backup to be available to restore immediately at the production data center, and within 24 hours at the disaster recovery location. All backup processes must be fully automated.
What is the MOST cost-effective backup solution that will meet all requirements?

Question4: An IoT company has rolled out a fleet of sensors for monitoring temperatures in remote locations. Each device connect to AWS IoT Core and sends a message 30 seconds, updating an Amazon DynamoDB table. A System Administrator users AWS IoT to verify the devices are still sending messages to AWS IoT Core: the database is not updating.
What should a Solution Architect check to determine why the database is not being updated?

Question5: While debugging a backend application for an loT system that supports globally distributed devices a Solutions Architect notices that stale data is occasionally being sent to user devices. Devices often share data, and stale data does not cause issues in most cases However device operations are disrupted when a device reads the stale data after an update The global system has multiple identical application stacks deployed In different AWS Regions If a user device travels out of its home geographic region it will always connect to the geographically closest AWS Region to write or read data The same data is available in all supported AWS Regions using an Amazon DynamoDB global table What change should be made to avoid causing disruptions in device operations'?

Question6: A Solutions Architect is designing a highly available and reliable solution for a cluster of Amazon EC2 instances.
The Solutions Architect must ensure that any EC2 instance within the cluster recovers automatically after a system failure. The solution must ensure that the recovered instance maintains the same IP address.
How can these requirements be met?

Question7: A company operating a website on AWS requires high levels of scalability, availability and performance. The company is running a Ruby on Rails application on Amazon EC2. It has a data tier on MySQL 5.6 on Amazon EC2 using 16 TB of Amazon EBS storage. Amazon CloudFront is used to cache application content. The Operations team is reporting continuous and unexpected growth of EBS volumes assigned to the MySQL database. The Solutions Architect has been asked to design a highly scalable, highly available, and high-performing solution.
Which solution is the MOST cost-effective at scale?

Question8: A company is currently running a production workload on AWS that is very I/O intensive. Its workload consists of a single tier with 10 c4.8xlarge instances, each with 2 TB gp2 volumes. The number of processing jobs has recently increased, and latency has increased as well. The team realizes that they are constrained on the IOPS. For the application to perform efficiently, they need to increase the IOPS by 3,000 for each of the instances.
Which of the following designs will meet the performance goal MOST cost effectively?

Question9: An organization has two Amazon EC2 instances:
* The first is running an ordering application and an inventory application.
* The second is running a queuing system.
During certain times of the year, several thousand orders are placed per second. Some orders were lost when the queuing system was down. Also, the organization's inventory application has the incorrect quantity of products because some orders were processed twice.
What should be done to ensure that the applications can handle the increasing number of orders?

Question10: A media company has a static web application that is generated programmatically. The company has a build pipeline that generates HTML content that is uploaded to an Amazon S3 bucket served by Amazon CloudFront. The build pipeline runs inside a Build Account. The S3 bucket and CloudFront distribution are in a Distribution Account. The build pipeline uploads the files to Amazon S3 using an 1AM role in the Build Account. The S3 bucket has a bucket policy that only allows CloudFront to read objects using an origin access identity (OAI). During testing, all attempts to access the application using the CloudFront URL result in an HTTP 403 Access Denied response.
What should a solutions architect suggest to the company to allow access the objects in Amazon S3 through CloudFront?

Question11: AnyCompany has acquired numerous companies over the past few years. The CIO for AnyCompany would like to keep the resources for each acquired company separate. The CIO also would like to enforce a chargeback model where each company pays for the AWS services it uses.
The Solutions Architect is tasked with designing an AWS architecture that allows AnyCompany to achieve the following:
* Implementing a detailed chargeback mechanism to ensure that each company pays for the resources it uses.
* AnyCompany can pay for AWS services for all its companies through a single invoice.
* Developers in each acquired company have access to resources in their company only.
* Developers in an acquired company should not be able to affect resources in their company only.
* A single identity store is used to authenticate Developers across all companies.
Which of the following approaches would meet these requirements? (Choose two.)

Question12: A company uses Amazon S3 to store documents that may only be accessible to an Amazon EC2 instance in a certain virtual private cloud (VPC). The company fears that a malicious insider with access to this instance could also set up an EC2 instance in another VPC to access these documents.
Which of the following solutions will provide the required protection?

Question13: A company is migrating to the cloud. It wants to evaluate the configurations of virtual machines in its existing data center environment to ensure that it can size new Amazon EC2 instances accurately. The company wants to collect metrics, such as CPU, memory, and disk utilization, and it needs an inventory of what processes are running on each instance. The company would also like to monitor network connections to map communications between servers.
Which would enable the collection of this data MOST cost effectively?

Question14: A company is running a two-tier web-based application in an on-premises data center, The application user consists of a single server running a stateful application. The application connect to a PostSQL data use running on a separate server. the application's user base is expected to grow significantly, so the company is migrating the application and database to AWS. The solution will use Amazon Aurora PostgreSQL. Amazon EC2 Auto Scaling and Elastic Load Balancing.
Which solution will provide a consistent user experience that will allow the application and database tiers to scalar?

Question15: A company runs a Windows Server host in a public subnet that is configured to allow a team of administrators to connect over RDP to troubleshoot issues with hosts in a private subnet. The host must be available at all times outside of a scheduled maintenance window, and needs to receive the latest operating system updates within 3 days of release.
What should be done to manage the host with the LEAST amount of administrative effort?

Question16: A Solutions Architect is building a solution for updating user metadata that is initiated by web servers. The solution needs to rapidly scale from hundreds lo tens of thousands of jobs in less than 30 seconds. The solution must be asynchronous always avertable and minimize costs Which strategies should the Solutions Architect use to meet these requirements?

Question17: A company is migrating its marketing website and content management system from an on-premises data center to AWS. The company wants the AWS application to be developed in a VPC with Amazon EC2 instances used for the web servers and an Amazon RDS instance for the database.
The company has a runbook document that describes the installation process of the on-premises system. The company would like to base the AWS system on the processes referenced in the runbook document. The runbook document describes the installation and configuration of the operating systems, network settings, the website, and content management system software on the servers. After the migration is complete, the company wants to be able to make changes quickly to take advantage of other AWS features.
How can the application and environment be deployed and automated in AWS, while allowing for future changes?

Question18: A company deployed a three-tier web application in two regions: us-east-1 and eu-west-1. The application must be active in both regions at the same time. The database tier of the application uses a single Amazon RDS Aurora database globally, with a master in us-east-1 and a read replica in eu-west-1. Both regions are connected by a VPN.
The company wants to ensure that the application remains available even in the event of a region-level failure of all of the application's components. It is acceptable for the application to be in read-only mode for up to 1 hour. The company plans to configure two Amazon Route 53 record sets, one for each of the regions.
How should the company complete the configuration to meet its requirements while providing the lowest latency for the application end-users? (Choose two.)

Question19: A company is using multiple AWS accounts. The DNS records are stored in a private hosted zone for Amazon Route 53 in Account A.
The company's applications and databases are running in Account B.
A solutions architect will deploy a two-tier application in a new VPC. To simplify the configuration, the db.example.com CNAME record set for the Amazon RDS endpoint was created in a private hosted zone for Amazon Route 53 During deployment the application failed to start Troubleshooting revealed that db.example.com is not resolvable on the Amazon EC2 instance. The solutions architect confirmed that the record set was created correctly in Route 53.
Which combination of steps should the solutions architect take to resolve this issue? (Select TWO)

Question20: A large company has many business units. Each business unit has multiple AWS accounts for different purposes. The CIO of the company sees that each business unit has data that would be useful to share with other parts of the company. In total, there are about 10 PB of data that needs to be shared with users in 1,000 AWS accounts. The data is proprietary, so some of it should only be available to users with specific job types.
Some of the data is used for throughput of intensive workloads, such as simulations. The number of accounts changes frequently because of new initiatives, acquisitions, and divestitures.
A Solutions Architect has been asked to design a system that will allow for sharing data for use in AWS with all of the employees in the company.
Which approach will allow for secure data sharing in scalable way?

Question21: A company is migrating its on-premises build artifact server to an AWS solution. The current system consists of an Apache HTTP server that serves artifacts to clients on the local network, restricted by the perimeter firewall. The artifact consumers are largely build automation scripts that download artifacts via anonymous HTTP, which the company will be unable to modify within its migration timetable.
The company decides to move the solution to Amazon S3 static website hosting. The artifact consumers will be migrated to Amazon EC2 instances located within both public and private subnets in a virtual private cloud (VPC).
Which solution will permit the artifact consumers to download artifacts without modifying the existing automation scripts?

Question22: A company had a tight deadline to migrate its on-premises environment to AWS. It moved over Microsoft SQL Servers and Microsoft Windows Servers using the virtual machine import/export service and rebuild other applications native to the cloud. The team created both Amazon EC2 databases and used Amazon RDS.
Each team in the company was responsible for migrating their applications, and they have created individual accounts for isolation of resources. The company did not have much time to consider costs, but now it would like suggestions on reducing its AWS spend.
Which steps should a Solutions Architect take to reduce costs?

Question23: A company has a single AWS master billing account, which is the root of the AWS Organizations hierarchy.
The company has multiple AWS accounts within this hierarchy, all organized into organization units (OUs).
More OUS and AWS accounts will continue to be created as other parts of the business migrate applications to AWS. These business units may need to use different AWS services. The Security team is implementing the following requirements for all current and future AWS accounts.
* Control policies must be applied across all accounts to prohibit AWS servers.
* Exceptions to the control policies are allowed based on valid use cases.
Which solution will meet these requirements with minimal optional overhead?

Question24: A company runs a public-facing application that uses a Java-based web sen/ice via a RESTful API It is hosted on Apache Tomcat on a single server in a data center that runs consistently at 30% CPU utilization Use of the API is expected to increase by 10 times with a new product launch The business wants to migrate the application to AWS with no disruption and needs it to scale to meet demand The company has already decided to use Amazon Route 53 and CNAME records lo redirect traffic How can these requirements be met with the LEAST amount of effort?

Question25: A company provides AWS solutions to its users with AWS CloudFormation templates. Users launch the templates in their accounts to have different solutions provisioned for them. The users want to improve the deployment strategy for solutions while retaining the ability to do the following:
* Add their own features to a solution for their specific deployments.
* Run unit tests on their changes.
* Turn features on and off for their deployments.
* Automatically update with code changes.
* Run security scanning tools for their deployments.
Which strategies should the solutions architect use to meet the requirements?

Question26: A company has a complex web application that leverages Amazon CloudFront for global scalability and performance. Over time, Users report that the web application is slowing down.
The company's operations team reports that the CloudFront cache hit ratio has been dropping steadily. The cache metrics report indicates that query strings on some URLs are inconsistently ordered and are specified sometimes in mixed-case letters and sometimes in lowercase letters.
Which set of actions should the solutions architect take to increase the cache hit ratio as quickly as possible?

Question27: A company is moving a business-critical application onto AWS. It is a traditional three-tier web application using an Oracle database. Data must be encrypted in transit and at rest. The database hosts 12 TB of data.
Network connectivity to the source Oracle database over the internal is allowed, and the company wants to reduce the operational costs by using AWS Managed Services where possible. All resources within the web and application tiers have been migrated. The database has a few tables and a simple schema using primary keys only; however, it contains many Binary Large Object (BLOB) fields. It was not possible to use the database's native replication tools because of licensing restrictions.
Which database migration solution will result in the LEAST amount of impact to the application's availability?

Question28: A company currently uses Amazon EBS and Amazon RDS for storage purposes. The company intends to use a pilot light approach for disaster recovery in a different AWS Region. The company has an RTO of 6 hours and an RPO of 24 hours.
Which solution would achieve the requirements with MINIMAL cost?

Question29: The Security team needs to provide a team of interns with an AWS environment so they can build the serverless video transcoding application. The project will use Amazon S3, AWS Lambda, Amazon API Gateway, Amazon Cognito, Amazon DynamoDB, and Amazon Elastic Transcoder.
The interns should be able to create and configure the necessary resources, but they may not have access to create or modify AWS IAM roles. The Solutions Architect creates a policy and attaches it to the interns' group.
How should the Security team configure the environment to ensure that the interns are self-sufficient?

Question30: A company runs an IoT platform on AWS. IoT sensors in various locations send data to the company's Node.js API servers on Amazon EC2 instances running behind an Application Load Balancer. The data is stored in an Amazon RDS MySQL DB instance that uses a 4 TB General Purpose SSD volume.
The number of sensors the company has deployed in the field has increased over time, and is expected to grow significantly. The API servers are consistently overloaded and RDS metrics show high write latency.
Which of the following steps together will resolve the issues permanently and enable growth as new sensors are provisioned, while keeping this platform cost-efficient? (Choose two.)

Question31: A company stores sales transaction data in Amazon DynamoDB tables. To detect anomalous behaviors and respond quickly, all changes to the items stored in the DynamoDB tables must be logged within 30 minutes.
Which solution meets the requirements?

Question32: A company is planning to deploy a new business analytics application that requires 10.000 hours of compute time each month. The compute resources can have flexible availability, but must be as cost-effective as possible. The company will also provide a reporting service to distribute analytics reports, which needs to run at all times How should the solutions architect design a solution that meets these requirements?

Question33: A public retail web application uses an Application Load Balancer (ALB) in front of Amazon EC2 instances running across multiple Availability Zones (AZs) in a Region backed by an Amazon RDS MySQL Multi-AZ deployment. Target group health checks are configured to use HTTP and pointed at the product catalog page.
Auto Scaling is configured to maintain the web fleet size based on the ALB health check.
Recently, the application experienced an outage. Auto Scaling continuously replaced the instances during the outage. A subsequent investigation determined that the web server metrics were within the normal range, but the database tier was experiencing high load, resulting in severely elevated query response times.
Which of the following changes together would remediate these issues while improving monitoring capabilities for the availability and functionality of the entire application stack for future growth? (Select TWO.)

Question34: A company has a standard three-tier architecture using two Availability Zones. During the company's off season, users report that the website is not working. The Solutions Architect finds that no changes have been made to the environment recently, the website is reachable, and it is possible to log in. However, when the Solutions Architect selects the "find a store near you" function, the maps provided on the site by a third-party RESTful API call do not work about 50% of the time after refreshing the page. The outbound API calls are made through Amazon EC2 NAT instances.
What is the MOST likely reason for this failure and how can it be mitigated in the future?

Question35: A Solution Architect is designing a deployment strategy for an application tier and gas the following requirements.
* The application code will need a 500 HB static dataset to be present before application startup.
* The application tier be able to scale Up and down based on demand with as little startup time as possible.
* The development team should be able to update the code multiple times each day.
* Critical operating system (OS) patches must be installed within 48 hours of being released.
Which deployment strategy meets these requirements?

Question36: A company's data center is connected to the AWS Cloud over a minimally used 10-Gbps AWS Direct Connect connection with a private virtual interface to its virtual private cloud {VPC) The company internet connection is 200 Mbps and the company has a 150-TB dataset that is created each Friday The data must be transferred and available in Amazon S3 on Monday morning Which is the LEAST expensive way to meet the requirements while allowing for data transfer growth?

Question37: A company uses an Amazon EMR cluster to process data once a day. The raw data comes from Amazon S3, and the resulting processed data is also stored in Amazon S3. The processing must complete within 4 hours; currently, it only takes 3 hours. However, the processing time is taking 5 to 10 minutes. longer each week due to an increasing volume of raw data.
The team is also concerned about rising costs as the compute capacity increases. The EMR cluster is currently running on three m3.xlarge instances (one master and two core nodes).
Which of the following solutions will reduce costs related to the increasing compute needs?

Question38: A Solutions Architect needs to design a highly available application that will allow authenticated users to stay connected to the application even when there are underlying failures.
Which solution will meet these requirements?

Question39: A company is building an AWS landing zone and has asked a Solutions Architect to design a multi-account access strategy that will allow hundreds of users to use corporate credentials to access the AWS Console. The company is running a Microsoft Active Directory and users will use an AWS Direct Connect connection to connect to AWS. The company also wants to be able to federate to third-party services and providers, including custom applications.
Which solution meets the requirements by using the LEAST amount of management overhead?

Question40: A company runs its containerized batch jobs on Amazon ECS. The jobs are scheduled by submitting a container image, a task definition, and the relevant data to an Amazon S3 bucket. Container images may be unique per job. Running the jobs as quickly as possible is of utmost importance, so submitting jobs artifacts to the S3 bucket triggers the job to run immediately. Sometimes there may no jobs running at all. However, jobs of any size can be submitted with no prior warning to the IT Operations team. Job definitions include CPU and memory resource requirements.
What solution will allow the batch jobs to complete as quickly as possible after being scheduled?

Question41:
An organization has recently grown through acquisitions. Two of the purchased companies use the same IP CIDR range. There is a new short-term requirement to allow AnyCompany A (VPC-A) to communicate with a server that has the IP address 10.0.0.77 in AnyCompany B (VPC-B). AnyCompany A must also communicate with all resources in AnyCompany C (VPC-C). The Network team has created the VPC peer links, but it is having issues with communications between VPC-A and VPC-B. After an investigation, the team believes that the routing tables in the VPCs are incorrect.
What configuration will allow AnyCompany A to communicate with AnyCompany C in addition to the database in AnyCompany B?

Question42: A company provides auction services for artwork and has users across North America and Europe. The company hosts its application in Amazon EC2 instances m the us-east-1 Region. Artists upload photos of their work as large-size, high-resolution image files from their mobile phones to a centralized Amazon S3 bucket created in the us-east-1 Region The users in Europe are reporting slow performance for their image uploads.
How can a solutions architect improve the performance of the image upload process?

Question43: A financial services company logs personality identifiable information to its application logs stored in Amazon S3. Due to regulatory compliance requirements, the log files must be encrypted at rest. The Security team has mandated that the company's on-premises hardware security modules (HSMs) be used to generate the CMK material.
Which steps should the Solution Architected take to meet these requirements?

Question44: A company has a photo sharing social networking application. To provide a consistent experience for users, the company performs some image processing on the photos uploaded by users before publishing on the application. The image processing is implemented using a set of Python libraries.
The current architecture is as follows:
* The image processing Python code runs in a single Amazon EC2 instance and stores the processed images in an Amazon S3 bucket named ImageBucket.
* The front-end application, hosted in another bucket, loads the images from ImageBucket to display to users.
With plans for global expansion, the company wants to implement changes in its existing architecture to be able to scale for increased demand on the application and reduce management complexity as the application scales.
Which combination of changes should a solutions architect make? (Select TWO.)

Question45: 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.)

Question46: An e-commerce company is revamping its IT infrastructure and is planning to use AWS services. The company's CIO has asked a Solutions Architect to design a simple, highly available, and loosely coupled order processing application. The application is responsible for receiving and processing orders before storing them in an Amazon DynamoDB table. The application has a sporadic traffic pattern and should be able to scale during marketing campaigns to process the orders with minimal delays.
Which of the following is the MOST reliable approach to meet the requirements?

Question47: A company runs a legacy system on a single m4.2xlarge Amazon EC2 instance with Amazon EBS2 storage.
The EC2 instance runs both the web server and a self-managed Oracle database. A snapshot is made of the EBS volume every 12 hours, and an AMI was created from the fully configured EC2 instance.
A recent event that terminated the EC2 instance led to several hours of downtime. The application was successfully launched from the AMI, but the age of the EBS snapshot and the repair of the database resulted in the loss of 8 hours of data. The system was also down for 4 hours while the Systems Operators manually performed these processes.
What architectural changes will minimize downtime and reduce the chance of lost data?

Question48: A large company with hundreds of AWS accounts has a newly established centralized internal process for purchasing new or modifying existing Reserved Instances This process requires all business units that want to purchase or modify Reserved Instances to submit requests to a dedicated team for procurement or execution Previously, business units would directly purchase or modify Reserved Instances in their own respective AWS accounts autonomously Which combination of steps should be taken to proactively enforce the new process in the MOST secure way possible? (Select TWO.)

Question49: A large global financial services company has multiple business units. The company wants to allow Developers to try new services, but there are multiple compliance requirements for different workloads. The Security team is concerned about the access strategy for on-premises and AWS implementations. They would like to enforce governance for AWS services used by business team for regulatory workloads, including Payment Card Industry (PCI) requirements.
Which solution will address the Security team's concerns and allow the Developers to try new services?

Question50: A company is using an existing orchestration tool to manage thousands of Amazon EC2 instances. A recent penetration test found a vulnerability in the company's software stack. This vulnerability has prompted the company to perform a full evaluation of its current production environment. The analysis determined that the following vulnerabilities exist within the environment
* Operating systems with outdated libraries and known vulnerabilities are being used in production
* Relational databases hosted and managed by the company are running unsupported versions with known vulnerabilities
* Data stored in databases is not encrypted
The solutions architect intends to use AWS Contig to continuously audit and assess the compliance ot the company's AWS resource configurations with the company's policies and guidelines What additional steps will enable the company to secure its environments and track resources while adhering to best practices?

Question51: A company decided to purchase Amazon EC2 Reserved Instances. A solutions architect is tasked with implementing a solution where only the master account in AWS Organizations is able to purchase the Reserved Instances. Current and future member accounts should be blocked from purchasing Reserved Instances.
Which solution will meet these requirements?

Question52: A company has a media catalog with metadata for each item in the catalog. Different types of metadata are extracted from the media items by an application running on AWS Lambda. Metadata is extracted according to a number of rules with the output stored in an Amazon ElastiCache for Redis cluster. The extraction process is done in batches and takes around 40 minutes to complete.
The update process is triggered manually whenever the metadata extraction rules change.
The company wants to reduce the amount of time it takes to extract metadata from its media catalog. To achieve this, a solutions architect has split the single metadata extraction Lambda function into a Lambda function for each type of metadata.
Which additional steps should the solutions architect take to meet the requirements?

Question53: A bank is designing an online customer service portal where customers can chat with customer service agents.
The portal is required to maintain a 15-minute RPO or RTO in case of a regional disaster. Banking regulations require that all customer service chat transcripts must be preserved on durable storage for at least 7 years, chat conversations must be encrypted in-flight, and transcripts must be encrypted at rest. The Data Lost Prevention team requires that data at rest must be encrypted using a key that the team controls, rotates, and revokes.
Which design meets these requirements?

Question54: A finance company is running its business-critical application on current-generation Linux EC2 instances. The application includes a self-managed MySQL database performing heavy I/O operations. The application is working fine to handle a moderate amount of traffic during the month. However, it slows down during the final three days of each month due to month-end reporting, even though the company is using Elastic Load Balancers and Auto Scaling within its infrastructure to meet the increased demand.
Which of the following actions would allow the database to handle the month-end load with the LEAST impact on performance?

Question55: A company is adding a new approved external vendor that only supports IPv6 connectivity. The company's backend systems sit in the private subnet of an Amazon VPC. The company uses a NAT gateway to allow these systems to communicate with external vendors over IPv4. Company policy requires systems that communicate with external vendors use a security group that limits access to only approved external vendors.
The virtual private cloud (VPC) uses the default network ACL.
The Systems Operator successfully assigns IPv6 addresses to each of the backend systems. The Systems Operator also updates the outbound security group to include the IPv6 CIDR of the external vendor (destination). The systems within the VPC are able to ping one another successfully over IPv6. However, these systems are unable to communicate with the external vendor.
What changes are required to enable communication with the external vendor?

Question56: A company has an application that generates a weather forecast that is updated every 15 minutes with an output resolution of 1 billion unique positions, each approximately 20 bytes in size (20 Gigabytes per forecast). Every hour, the forecast data is globally accessed approximately 5 million times (1,400 requests per second), and up to 10 times more during weather events. The forecast data is overwritten every update. Users of the current weather forecast application expect responses to queries to be returned in less than two seconds for each request.
Which design meets the required request rate and response time?

Question57: A company is running multiple applications on Amazon EC2. Each application is deployed and managed by multiple business units. All applications are deployed on a single AWS account but on different virtual private clouds (VPCs). The company uses a separate VPC in the same account for test and development purposes.
Production applications suffered multiple outages when users accidentally terminated and modified resources that belonged to another business unit. A Solutions Architect has been asked to improve the availability of the company applications while allowing the Developers access to the resources they need.
Which option meets the requirements with the LEAST disruption?

Question58: A security engineer determined that an existing application retrieves credentials to an Amazon RDS for MySQL database from an er implement the following application design changes to improve security:
* The database must use strong, randomly generated passwords stored in a secure AWS managed service.
* The application resources must be deployed through AWS CloudFormation.
* The application must rotate credentials for the database every 90 days.
A solutions architect will generate a CloudFormation template to deploy the application.
Which resources specified in the CloudFormation template will meet the security engineer's requirements e LEAST amount of operational overhead?

Question59: What combination of steps could a Solutions Architect take to protect a web workload running on Amazon EC2 from DDoS and application layer attacks? (Select two.)

Question60: A company wants to host a global web application on AWS. It has the following design requirements.
* The access pattern must allow for latching data from multiple data sources.
* Minimize the of API calls.
* Keep page load times to within 50 ms.
* Provide user authentication and authorization and manage data access for different user personas (for example, administrator, manager, or engineer).
* Use a server less design
Which set of strategies should a solution architect use?

Question61: A company experienced a breach of highly confidential personal information due to permission issues on an Amazon S3 bucket. The information security team has tightened the bucket policy to restrict access.
Additionally, to be better prepared for future attacks, these requirements must be met:
* Identity remote IP addresses that are accessing the bucket objects.
* Receive alerts when the security policy on the bucket is changed
* Remediate the policy changes automatically
Which strategies should the solutions architect use?

Question62: A company has developed a web application that runs on Amazon EC2 instances in one AWS Region. The company has taken on new business in other countries and must deploy its application into other to meet low-latency requirements for its users. The regions can be segregated, and an application running in one region does not need to communicate with instances in other regions.
How should the company's Solutions Architect automate the deployment of the application so that it can be MOST efficiently deployed into multiple regions?

Question63: A company runs a dynamic mission-critical web application that has an SLA of 99.99%. Global application users access the application 24/7. The application is currently hosted on premises and routinely fails to meet its SLA, especially when millions of users access the application concurrently. Remote users complain of latency.
How should this application be redesigned to be scalable and allow for automatic failover at the lowest cost?

Question64: A large global company wants to migrate a stateless mission-critical application to AWS. The application is based on IBM WebSphere (application and integration middleware), IBM MQ (messaging middleware), and IBM DB2 (database software) on a z/OS operating system.
How should the Solutions Architect migrate the application to AWS?

Question65: A company is having issues with a newly deployed server less infrastructure that uses Amazon API Gateway, Amazon Lambda, and Amazon DynamoDB.
In a steady state, the application performs as expected However, during peak load, tens of thousands of simultaneous invocations are needed and user request fail multiple times before succeeding. The company has checked the logs for each component, focusing specifically on Amazon CloudWatch Logs for Lambda. There are no error logged by the services or applications.
What might cause this problem?

Question66: A company hosts an application on Amazon EC2 instances and needs to store files in Amazon S3. The files should never traverse the public internet and only the application EC2 instances are granted access to a specific Amazon S3 bucket. A solutions architect has created a VPC endpoint for Amazon S3 and connected the endpoint to the application VPC.
Which additional steps should the solutions architect take to meet these requirements?

Question67: A Solutions Architect is working with a company that operates a standard three-tier web application in AWS.
The web and application tiers run on Amazon EC2 and the database tier runs on Amazon RDS. The company is redesigning the web and application tiers to use Amazon API Gateway and AWS Lambda, and the company intends to deploy the new application within 6 months. The IT Manager has asked the Solutions Architect to reduce costs in the interim.
Which solution will be MOST cost effective while maintaining reliability?

Question68: A Solutions Architect is designing a multi-account structure that has 10 existing accounts. The design must meet the following requirements:
* Consolidate all accounts into one organization.
* Allow full access to the Amazon EC2 service from the master account and the secondary accounts.
* Minimize the effort required to add additional secondary accounts.
Which combination of steps should be included in the solution? (Choose two.)

Question69: A company currently runs a secure application on Amazon EC2 that takes files from on-premises locations through AWS Direct Connect, processes them, and uploads them to a single Amazon S3 bucket. The application uses HTTPS for encryption in transit to Amazon S3, and S3 server-side encryption to encrypt at rest.
Which of the following changes should the Solutions Architect recommend to make this solution more secure without impeding application's performance?

Question70: A bank is re-architecting its mainframe-based credit card approval processing application to a cloud-native application on the AWS cloud.
The new application will receive up to 1,000 requests per second at peak load. There are multiple steps to each transaction, and each step must receive the result of the previous step. The entire request must return an authorization response within less than 2 seconds with zero data loss. Every request must receive a response.
The solution must be Payment Card Industry Data Security Standard (PCI DSS)-compliant.
Which option will meet all of the bank's objectives with the LEAST complexity and LOWEST cost while also meeting compliance requirements?

Question71: A company is refactoring an existing web service that provides read and write access to structured data. The service must respond to short but significant spikes in the system load The service must be fault tolerant across multiple AWS Regions.
Which actions should be taken to meet these requirements?

Question72: A software as a service (SaaS) company offers a cloud solution for document management to private law firms and the public sector. A Local Government client recently mandated that highly confidential documents cannot be stored outside the country. The company CIO asks a solutions architect to ensure the application can adapt to this new requirement The CIO also wants to have a proper backup plan for these documents, as backups are not currently performed What solution meets these requirements?

Question73: A company will several AWS accounts is using AWS Organizations and service control policies (SCPs). An Administrator created the following SCP and has attached it to an organizational unit (OU) that contains AWS account 1111-1111-1111:

Developers working in account 1111-1111-1111 complain that they cannot create Amazon S3 buckets. How should the Administrator address this problem?

Question74: A company CFO recently analyzed the company's AWS monthly bill and identified an opportunity to reduce the cost for AWS Elastic Beanstalk environments in use. The CFO has asked a Solutions Architect to design a highly available solution that will spin up an Elastic Beanstalk environment in the morning and terminate it at the end of the day.
The solution should be designed with minimal operational overhead and to minimize costs. It should also be able to handle the increased use of Elastic Beanstalk environments among different teams, and must provide a one-stop scheduler solution for all teams to keep the operational costs low.
What design will meet these requirements?

Question75: A company is using AWS for production and development workloads. Each business unit has its own AWS account for production, and a separate AWS account to develop and deploy its applications. The Information Security department has introduced new security policies that limit access for terminating certain Amazon ECs instances in all accounts to a small group of individuals from the Security team.
How can the Solutions Architect meet these requirements?