AWS Certified DevOps Engineer – Professional Practice Questions Part 7

You want to allow automated testing of your CloudFormation template as part of your deployment pipeline. What assessments need to be carried out to ensure that feedback is quicker and costs and risk are minimized? (Choose 3)

An application is written in Go Programming language, which has to be deployed to AWS. The application code is stored on a Git repository. Choose two methods for this deployment.

Adrian has multi-level architecture that uses a load balancer and is supported by a web tier within an Amazon EC2 Auto-scaling group. This architecture serves public facing web traffic. During a traffic peak, Adrian notices that the amount of incoming traffic and Auto-scaling policy that he had setup is adding new instances disproportionately. How should he stop the Auto-scaling group in reaction to incoming traffic from scaling incorrectly?

You have created a web application based on the Auto-scaling group of web servers using ELB. You create a new AMI for every application version deployment. You are releasing a new version of the application in which you want a controlled migration of users with the A/B deployment technique, while the fleet is constant 12 hours long to ensure that the new version is functioning. What method should you opt for to enable this technique while easily rolling back when required?

Your Company uses a third-party configuration management tool for web application development environment in order to create a Docker container on a local developer’s machine. What are you supposed to do for making sure that your application is not effected by the web application, supporting network storage and security infrastructure after the deployment for staging and production environments in AWS occurs?

Your company has set up automated resources on AWS and you are assigned to take care of these resources. Your task is to integrate some of the company’s chef recipes to be used for the existing OpsWorks stack in AWS. The problem is, when you visited the recipes section, you could not find the option to add any recipes. What could be reason for this and how will you fix it?

You are a DevOps engineer for a company that has a number of CloudFormation templates in AWS. The IT security department wants to know all the users who use CloudFormation stacks in the company’s AWS account. Which of the following can be done to take care of this security concern?

Your development team is planning for continuous release cycles for their application. They want to use the AWS service available to be able to deploy a web application and rollback to its previous version quickly if required. Which of the following can be used to meet this requirement? (Choose 2)

On AWS, to be able to scale out to react the increase in demand quickly, you need to build out a layer in a software stack. You are running the code on EC2 instances in an Auto-scaling group behind an ELB. Which application deployment should you use?

To coordinate the creation of stack resources in CloudFormation, which of the following can be used? (Choose 2)

How much time does the OpsWorks service waits for a response before deeming an underlying instance as a failed instance?

You are designing an OpsWorks stack in AWS. Your company’s on-premises Chef configuration has some custom recipes that are required to run whenever an instance is launched in OpsWorks. Which steps should be carried out to fulfill this requirement? (Choose 2)

From the following options, which one is a reliable and durable logging solution to track changes made to your AWS account?

To create the current application in a specified environment, which of the following commands for the Elastic BeanStalk CLI can be used?

Your company is planning to automate its integration, build, and deployment processes by using available AWS services. It is a part of plan to use AWS CodeBuild to build the artifacts. When using AWS CodeBuild, which of the following files is used to specify a collection of build commands that can be used by the service during the build process?

As a DevOps engineer, it is your task to create a continuous integrated and continuous delivery model for your organization’s application. Which of the following services are best suited for this purpose? (Choose 2)

To make sure that the EC2 instances can work with AWS CodeDeploy, which of the following pre-requisites must be ensured? (Choose 2)

You have production instances running in an Auto-scaling group and it is decided that you need to change the instance type of these instances. You currently have four instances and you cannot afford interruption in service and you want the surety that two instances are running during the update. Which of the below options can be used for this?

As a DevOps engineer, you are instructed to deploy Docker containers using AWS OpsWorks. How will you do this? (Choose 2)

For automatic collection of software inventory and applying OS patches on EC2 instances, which of the following AWS tools can be helpful?

Your application uses the EC2/On-premises compute platform. Which of the following files needs to be included along with source code binaries while deploying your application using the AWS CodeDeploy service?

Your company has a number of CloudFormation stack defined in AWS. Some of these stacks have been targeted for deletion as part of the routine housekeeping activity. Upon trying, few of those stacks are failing to delete. Which of the following could be the reason of this failure? (Choose 2)

Which of the following are the offerings of AWS to secure data at rest and in transit? (Choose 3)

You need to create nested stacks in AWS CloudFormation. Which of the following resource should be used?

Your development team uses .Net to code your web application. For continuous integration and deployment, the team wants it to be deployed to AWS. The code of application is hosted on a Git repository. Choose from the following combination of steps that needs to be taken to fulfil the requirement. (Choose 2)

You have an application hosted on AWS and you are using Jenkins as your continuous integration system. The builds are then deployed on newly launched EC2 instances. You want to minimize the overall cost of the continuous integration and deployment pipeline. Which of the below options will help in meeting the requirements? (Choose 2)

Your IT supervisor is worried about the cost incurred company’s AWS resources that are hosted on AWS. The supervisor wants to monitor the cost usage. Which of the following options can be helpful in monitoring the cost of AWS resources while also looking at the possibility of cost optimization? (Choose 3)

Your application is deployed on an EC2 instance and it needs to write data to DynamoDB table. Your security policy dictates that it is not allowed to store any security keys on the EC2 instance. Keeping the security policy and the requirement in mind, which of the following steps would you take? (Choose 2)

There are multiple applications and services running in your company’s production AWS account at any given time. It is required to understand where the cost is coming from. Without spending too much development time, how can you provide a good understanding of the most cost incurring application per month?

You are building an internal, for non-production use application based on Go programming language. This application used MySQL as database. Your developers are not very much familiar with the AWS environment, but you want them to be able to deploy the code with a single command line push and you want to set this up as simply as possible. Which tool is ideal for this?

To process messages from an SQS queue, you have a set of EC2 instances in an Auto-scaling group. The messages contain the location in S3 from where videos need to be processed by the EC2 instances. When a scale happens, it is observed that while processing a video, the EC2 instance gets terminated. How can you implement a solution to avoid this situation?

You have built an application that consists of a web and application server. You are going to deploy it using Elastic BeanStalk. Before the application version is deployed on the web server, it is required to run some python scripts. Which of the following can be used for this?

Your company’s application is hosted on a set of EC2 instances that are sitting behind an ELB. To host the newer version of the application, it is required to create an OpsWorks stack. You have planned to get the stack in place, carry out a level of testing, and then deploy the app at a later stage. The OpsWorks stack and layers have been setup. For testing, current ELB is being utilized but now you are noticing that your current application has stopped responding to requests. Why do you think it happened?

You have a set of EC2 instances that was launched by an auto scaling group. These instances are sitting behind an ELB. The assurance of storing web server logs in a durable storage layer is required. This surety is required so that the logs can later be analyzed by the staff. Which of the following steps should be takes to fulfil this requirement? (Choose 2)

You are leading a team that is responsible for an Elastic BeanStalk application. The business requires you to move to a continuous deployment model, releasing updates to the application multiple times per day with zero downtime. What will you do to ensure this with the ability to rollback immediately in a case of an emergency?

Your company’s application consisting of web servers and AWS RDS is hosted on AWS. It is a read-heavy application and you are noticing a decrease in response time due to the load on RDS instance. To scale the database tier, which of the following measures would you take? (Choose 2)

You are assigned with a task to automate the creation of EBS snapshots, which of the following is the best way to do this?

One of your vendors who is also a user of AWS, requires access to your AWS account in a way that the vendor should be able to read protected messages in a private S3 bucket as its leisure. Which of the following is the best way to accomplish this?

Multiple development teams work in your organization on a variety of programming languages. The applications being developed by these teams have a lot of dependencies. The company has planned to move these development environments onto AWS. Which of the following is the best solution to make this move?

Your company’s application is hosted on a set of EC2 servers behind an ELB. These EC2 servers are launched by an Auto-scaling group. From the following options, select the example of Blue/Green deployments in AWS.

What are the wait states that occur during the scale in and scale out process when you have added lifecycle hooks to an auto scaling group? (Choose 2)

As a DevOps engineer, you are using OpsWorks stack to rollout a collection of web servers for your company. When the instances are launched, a configuration file is needed to be set up prior to the launching of the web application hosted on these instances. To fulfil this requirement, which of the following steps would you take? (Choose 2)

For testing an application, the development team has requested you to create a CloudFormation template. They have requested that when the stack is deleted, the database should be preserved. How can you do this with CloudFormation?

Your company has migrated to AWS. It had an Active Directory setup in the on-premises setup and wants to use the same AD for authentication. Which AWS service can help you in continuing the use of the credentials of on-premises AD for authenticating AWS resources such as AWS WorkSpaces?

Your log analysis mechanism takes ten days to generate a report of top ten visitors of your web application. It is now required to implement a system that can report this information in real time, ensuring that the report is always up to date, and can handle the increase in number of requests to your application. How can this requirement be fulfilled in the most cost effective way?

You have multiple applications hosted on AWS and it is required to store the logs from these applications in a durable storage. After three months, these logs can be moved to archval storage. Which of the following steps would you carry out to meet this requirement? (Choose 2)

One of your applications is running in us-west-2 region and it requires 6 EC2 instances running all the time. Which of the following deployment type will provide you 100% fault tolerance if any AZ out of the three AZs in us-west-2 becomes unavailable? (Choose 2)

One of your instances is reporting an unhealthy system status check. It is something you are not responsible to monitor and repair on your own. In your AWS environment, how might you automate the repair of the system status check failure?

Your company’s production web servers are running on three reserved EC2 instances with EBS as root volumes. These instances have a consistent CPU load of 80%. An ELB distributes traffic to these instances. They also have production and development Multi-AZ RDS MySQL databases. This is a mission critical system. What would you recommend for cost reduction without affecting the availability?

You have production and development instances running in your VPC. To ensure better security, you want to restrict access to production instances for the people working on development instances. Which of the following would be the best way to accomplish this using policies?