You are running an Auto Scaling Group (ASG) with an Elastic Load Balancer (ELB) and a fleet of EC2 instances. Health checks are configured on the ASG to use EC2 status checks. The ELB has determined that an EC2 instance is unhealthy and has removed it from service. However, you noticed that the instance is still running and has not been terminated by the ASG.

What would be an explanation for this behavior?

An Auto Scaling Group is unable to respond quickly enough to load changes resulting in lost messages from another application tier. The messages are typically around 128KB in size.

What is the best design option to prevent the messages from being lost?

Your company would like to restrict the ability of most users to change their own passwords whilst continuing to allow a select group of users within specific user groups.

What is the best way to achieve this? (Select TWO.)

A Solutions Architect has been asked to suggest a solution for analyzing data in S3 using standard SQL queries. The solution should use a serverless technology.

Which AWS service can the Architect use?

Your organization has a data lake on S3 and you need to find a solution for performing in-place queries of the data assets in the data lake. The requirement is to perform both data discovery and SQL querying, and complex queries from a large number of concurrent users using BI tools.

What is the BEST combination of AWS services to use in this situation? (Select TWO.)

You have recently enabled Access Logs on your Application Load Balancer (ALB). One of your colleagues would like to process the log files using a hosted Hadoop service. What configuration changes and services can be leveraged to deliver this requirement?

A systems integration company that helps customers migrate into AWS repeatedly build large, standardized architectures using several AWS services. The Solutions Architects have documented the architectural blueprints for these solutions and are looking for a method of automating the provisioning of the resources.

Which AWS service would satisfy this requirement?

A company is deploying a big data and analytics workload. The analytics will be run from a fleet of thousands of EC2 instances across multiple AZs. Data needs to be stored on a shared storage layer that can be mounted and accessed concurrently by all EC2 instances. Latency is not a concern however extremely high throughput is required.

What storage layer would be most suitable for this requirement?

Your company has offices in several locations around the world. Each office utilizes resources deployed in the geographically closest AWS region. You would like to implement connectivity between all of the VPCs so that you can provide full access to each other’s resources. As you are security conscious you would like to ensure the traffic is encrypted and does not traverse the public Internet. The topology should be many-to-many to enable all VPCs to access the resources in all other VPCs.

How can you successfully implement this connectivity using only AWS services? (Select TWO.)

You are building an application that will collect information about user behavior. The application will rapidly ingest large amounts of dynamic data and requires very low latency. The database must be scalable without incurring downtime. Which database would you recommend for this scenario?

An application you are designing receives and processes files. The files are typically around 4GB in size and the application extracts metadata from the files which typically takes a few seconds for each file. The pattern of updates is highly dynamic with times of little activity and then multiple uploads within a short period of time.

What architecture will address this workload the most cost efficiently?

An Architect is designing a serverless application that will accept images uploaded by users from around the world. The application will make API calls to back-end services and save the session state data of the user to a database.

Which combination of services would provide a solution that is cost-effective while delivering the least latency?

A research company is developing a data lake solution in Amazon S3 to analyze huge datasets. The solution makes infrequent SQL queries only. In addition, the company wants to minimize infrastructure costs.

Which AWS service should be used to meet these requirements?

A training provider hosts a website using Amazon API Gateway on the front end. Recently, there has been heavy traffic on the website and the company wants to control access by allowing authenticated traffic from paying students only.

How should the company limit access to authenticated users only? (Select TWO.)

A retail organization is deploying a new application that will read and write data to a database. The company wants to deploy the application in three different AWS Regions in an active-active configuration. The databases need to replicate to keep information in sync.

Which solution best meets these requirements?

A data-processing application runs on an i3.large EC2 instance with a single 100 GB EBS gp2 volume. The application stores temporary data in a small database (less than 30 GB) located on the EBS root volume. The application is struggling to process the data fast enough, and a Solutions Architect has determined that the I/O speed of the temporary database is the bottleneck.

What is the MOST cost-efficient way to improve the database response times?

A Solutions Architect has created a VPC design that meets the security requirements of their organization. Any new applications that are deployed must use this VPC design.

How can project teams deploy, manage, and delete VPCs that meet this design with the LEAST administrative effort?

An application launched on Amazon EC2 instances needs to publish personally identifiable information (PII) about customers using Amazon SNS. The application is launched in private subnets within an Amazon VPC.

Which is the MOST secure way to allow the application to access service endpoints in the same region?

A Solutions Architect needs to deploy an HTTP/HTTPS service on Amazon EC2 instances that will be placed behind an Elastic Load Balancer. The ELB must support WebSockets.

How can the Architect meet these requirements?

A solutions Architect is designing a new workload where an AWS Lambda function will access an Amazon DynamoDB table.

What is the MOST secure means of granting the Lambda function access to the DynamoDB table?