Explain Concepts Related to Infrastructure as Code (IaC) AT0-001 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   An organization wants to move from manual infrastructure provisioning to a model where infrastructure is defined in code and deployed through automated pipelines. They also want to ensure that the same code can be run multiple times without causing errors or duplicate resources. Which two concepts are central to this transition?

   • AIaC and reusability
   • BDeclarative syntax and immutability
   • CIaC and idempotency
   • DImmutability and reusability
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   An operations team uses a configuration management tool to apply the same server configuration every hour. The tool checks the current state and only makes changes if needed. Which IaC principle does this practice demonstrate?

   • AScalability
   • BImmutability
   • CIdempotency
   • DReusability
   Reveal Solution Discussion Select an answer first
4. 8expert · hard

   A team manages a multi-region infrastructure using Terraform. They have a module for a web application that is used in three regions. They want to ensure that applying the configuration to any region produces the same result, and they want to avoid duplicating the module code. They also need to ensure that if a region's infrastructure is partially created, re-running the configuration will complete it without errors. Which combination of IaC principles should they rely on?

   • AReusability and idempotency
   • BDeclarative syntax and idempotency
   • CIdempotency and immutability
   • DImmutability and reusability
   Reveal Solution Discussion Select an answer first
5. 9expert · hard

   A team uses Ansible to manage application configuration. They have a playbook that installs a package and starts a service. They notice that when the playbook runs multiple times, it sometimes fails because the service is already running. They want to make the playbook idempotent. What is the best approach?

   • AUse Ansible modules that check the current state and only make changes if necessary, such as using the 'state=present' and 'state=started' parameters.
   • BUse a shell command to check if the service is running, and only start it if it is not.
   • CAdd a command to stop the service before starting it, to avoid conflicts.
   • DRun the playbook only once, and avoid repeated executions.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   Why is idempotency important for IaC automation?

   • AIt guarantees that deployments are completed within a fixed time
   • BIt allows code to be written in any programming language
   • CIt ensures that re-running a configuration does not cause drift or errors
   • DIt eliminates the need for version control
   Reveal Solution Discussion Select an answer first