Mastering Infrastructure Immutability
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Questions and Answers

Which statement best describes the benefits of Infrastructure as Code (IaC)?

  • IaC does not support source control tools.
  • IaC requires teams to review changes after they are deployed.
  • IaC allows for manual processes, which reduces errors.
  • IaC enables administrators to provision computing environments in a repeatable manner. (correct)

What is AWS CloudFormation?

  • A tool for deploying network environments.
  • A code that represents the infrastructure of an application.
  • A graphical interface for managing AWS resources.
  • A template-driven IaC solution. (correct)

Which language can be used to write templates in AWS CloudFormation?

  • Python
  • JSON (correct)
  • JavaScript
  • HTML

What percentage of the JSON definition is needed to build a single EC2 instance in a single VPC?

<p>25% (D)</p> Signup and view all the answers

What is the main advantage of using cloud computing for managing infrastructure?

<p>Less error-prone manual processes (B)</p> Signup and view all the answers

What does Infrastructure as Code (IaC) allow operation teams to manage in the same way as development teams manage their software code?

<p>Application code (B)</p> Signup and view all the answers

What is the purpose of using source control tools for the code that represents the infrastructure?

<p>To catch problems before deployment (D)</p> Signup and view all the answers

What does AWS CloudFormation support for configuring resources and runtime parameters?

<p>YAML language (C)</p> Signup and view all the answers

What is the benefit of writing a template in either JSON or YAML format?

<p>Allows for version control (A)</p> Signup and view all the answers

What is the scope of AWS CloudFormation for provisioning resources?

<p>Limited to AWS resources (A)</p> Signup and view all the answers

Which of the following is the best practice to avoid configuration drift?

<p>Maintaining an immutable infrastructure (A)</p> Signup and view all the answers

What is configuration drift?

<p>Frequent changes in server configuration (B)</p> Signup and view all the answers

What is an immutable infrastructure?

<p>A practice of provisioning a new server for every configuration change (C)</p> Signup and view all the answers

What is the blue-green deployment strategy?

<p>Deploying new resources for configuration changes and validating the deployment before deleting the old ones (C)</p> Signup and view all the answers

Why is it becoming a practice among the DevOps community not to modify the configuration of an existing server after it is deployed?

<p>To avoid configuration drift (C)</p> Signup and view all the answers

What is the role of configuration management tools in maintaining infrastructure?

<p>To manage IT infrastructure in the same way as software code (A)</p> Signup and view all the answers

What is infrastructure as code?

<p>Managing IT infrastructure in the same way as software code (B)</p> Signup and view all the answers

What is the risk of changing the configuration of a running server?

<p>Unintended behavior (D)</p> Signup and view all the answers

What is the recommended approach for managing configuration changes in modern production environments?

<p>Deploying new resources for configuration changes and validating the deployment before deleting the old ones (D)</p> Signup and view all the answers

Why is managing IT infrastructure considered a challenging task in the past?

<p>Using configuration management tools (D)</p> Signup and view all the answers

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