Mastering Infrastructure Immutability

Play an AI-generated podcast conversation about this lesson

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?

25% (D) Signup and view all the answers

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

Less error-prone manual processes (B) 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?

Application code (B) Signup and view all the answers

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

To catch problems before deployment (D) Signup and view all the answers

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

YAML language (C) Signup and view all the answers

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

Allows for version control (A) Signup and view all the answers

What is the scope of AWS CloudFormation for provisioning resources?

Limited to AWS resources (A) Signup and view all the answers

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

Maintaining an immutable infrastructure (A) Signup and view all the answers

What is configuration drift?

Frequent changes in server configuration (B) Signup and view all the answers

What is an immutable infrastructure?

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

What is the blue-green deployment strategy?

Deploying new resources for configuration changes and validating the deployment before deleting the old ones (C) 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?

To avoid configuration drift (C) Signup and view all the answers

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

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

What is infrastructure as code?

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

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

Unintended behavior (D) Signup and view all the answers

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

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

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

Using configuration management tools (D) Signup and view all the answers