Udemy - Practice Exam

An Auto Scaling group has a maximum capacity of 3, a current capacity of 2, and a scaling policy that adds 3 instances.

When executing this scaling policy, what is the expected outcome?

A junior developer has been asked to configure access to an Amazon EC2 instance hosting a web application. The developer has configured a new security group to permit incoming HTTP traffic from 0.0.0.0/0 and retained any default outbound rules. A custom Network Access Control List (NACL) connected with the instance's subnet is configured to permit incoming HTTP traffic from 0.0.0.0/0 and retained any default outbound rules.

Which of the following solutions would you suggest if the EC2 instance needs to accept and respond to requests from the internet?

While defining a business workflow as state machine on AWS Step Functions, a developer has configured several states.

Which of the following would you identify as the state that represents a single unit of work performed by a state machine?

You are storing your video files in a separate S3 bucket than your main static website in an S3 bucket. When accessing the video URLs directly the users can view the videos on the browser, but they can't play the videos while visiting the main website.

What is the root cause of this problem?

Your company has embraced cloud-native microservices architectures. New applications must be dockerized and stored in a registry service offered by AWS. The architecture should support dynamic port mapping and support multiple tasks from a single service on the same container instance. All services should run on the same EC2 instance.

Which of the following options offers the best-fit solution for the given use-case?

A company uses Amazon Simple Email Service (SES) to cost-effectively send susbscription emails to the customers. Intermittently, the SES service throws the error: Throttling – Maximum sending rate exceeded.

As a developer associate, which of the following would you recommend to fix this issue?

A company wants to automate its order fulfillment and inventory tracking workflow. Starting from order creation to updating inventory to shipment, the entire process has to be tracked, managed and updated automatically.

Which of the following would you recommend as the most optimal solution for this requirement?

Amazon Simple Queue Service (SQS) has a set of APIs for various actions supported by the service.

As a developer associate, which of the following would you identify as correct regarding the CreateQueue API? (Select two)

The Development team at a media company is working on securing their databases.

Which of the following AWS database engines can be configured with IAM Database Authentication? (Select two)

A company has more than 100 million members worldwide enjoying 125 million hours of TV shows and movies each day. The company uses AWS for nearly all its computing and storage needs, which use more than 10,000 server instances on AWS. This results in an extremely complex and dynamic networking environment where applications are constantly communicating inside AWS and across the Internet. Monitoring and optimizing its network is critical for the company.

The company needs a solution for ingesting and analyzing the multiple terabytes of real-time data its network generates daily in the form of flow logs. Which technology/service should the company use to ingest this data economically and has the flexibility to direct this data to other downstream systems?

You are responsible for an application that runs on multiple Amazon EC2 instances. In front of the instances is an Internet-facing load balancer that takes requests from clients over the internet and distributes them to the EC2 instances. A health check is configured to ping the index.html page found in the root directory for the health status. When accessing the website via the internet visitors of the website receive timeout errors.

What should be checked first to resolve the issue?

DevOps engineers are developing an order processing system where notifications are sent to a department whenever an order is placed for a product. The system also pushes identical notifications of the new order to a processing module that would allow EC2 instances to handle the fulfillment of the order. In the case of processing errors, the messages should be allowed to be re-processed at a later stage. The order processing system should be able to scale transparently without the need for any manual or programmatic provisioning of resources.

Which of the following solutions can be used to address this use-case in the most cost-efficient way?

A security company is requiring all developers to perform server-side encryption with customer-provided encryption keys when performing operations in AWS S3. Developers should write software with C# using the AWS SDK and implement the requirement in the PUT, GET, Head, and Copy operations.

Which of the following encryption methods meets this requirement?

A Developer at a company is working on a CloudFormation template to set up resources. Resources will be defined using code and provisioned based on certain conditions defined in the Conditions section.

Which section of a CloudFormation template cannot be associated with Condition?

A development team has configured inbound traffic for the relevant ports in both the Security Group of the EC2 instance as well as the Network Access Control List (NACL) of the subnet for the EC2 instance. The team is, however, unable to connect to the service running on the Amazon EC2 instance.

As a developer associate, which of the following will you recommend to fix this issue?

A development team at a social media company uses AWS Lambda functions for its serverless stack on AWS Cloud. For a new deployment, the Team Lead wants to send only a certain portion of the traffic to a new version of a Lambda function. In case the deployment goes wrong, the solution should also support the ability to roll back to a previous version of the Lambda function, with MIMINUM downtime for the application.

As a Developer Associate, which of the following options would you recommend to address this use-case?

PAT ATTENTINON TO THE FUCKING THING

You are designing a high-performance application that requires millions of connections. You have several EC2 instances running Apache2 web servers and the application will require capturing the user’s source IP address and source port without the use of X-Forwarded-For.

Which of the following options will meet your needs?

A developer is testing Amazon Simple Queue Service (SQS) queues in a development environment. The queue along with all its contents has to be deleted after testing.

Which SQS API should be used for this requirement?

A website serves static content from an Amazon Simple Storage Service (Amazon S3) bucket and dynamic content from an application load balancer. The user base is spread across the world and latency should be minimized for a better user experience.

Which technology/service can help access the static and dynamic content while keeping the data latency low?

A company stores confidential data on an Amazon Simple Storage Service (S3) bucket. New regulatory guidelines require that files be stored with server-side encryption. The encryption used must be Advanced Encryption Standard (AES-256) and the company does not want to manage S3 encryption keys.

Which of the following options should you use?

You were assigned to a project that requires the use of the AWS CLI to build a project with AWS CodeBuild. Your project's root directory includes the buildspec.yml file to run build commands and would like your build artifacts to be automatically encrypted at the end.

How should you configure CodeBuild to accomplish this?