Explain Concepts Related to Infrastructure as Code (IaC) AT0-001 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A systems administrator manages a fleet of 200 Linux servers that must be configured identically. Currently, configuration is done manually via SSH, and drift has been observed. The administrator wants to adopt a practice that treats server configuration as version-controlled code, enabling automated, repeatable deployments. Which approach best aligns with this goal?

   • ACreate a golden image and deploy it to all servers, then manually patch each server as needed.
   • BWrite a shell script that applies the desired configuration and run it manually on each server.
   • CDocument the desired configuration in a wiki and have administrators follow the steps during maintenance windows.
   • DUse a configuration management tool with a declarative manifest stored in a Git repository, and apply it via an automation pipeline.
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2. 22foundation · easy

   What does idempotency mean in the context of IaC?

   • ARunning code once is sufficient to configure all resources
   • BRunning the same code multiple times produces the same result
   • CCode must be executed in a specific order to work correctly
   • DCode automatically cleans up resources after execution
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4. 23expert · hard

   A company is evaluating whether to adopt IaC. They have a team of administrators who are skilled in manual configuration but not in coding. They want to reduce deployment times and improve consistency, but they are concerned about the learning curve. Which approach best addresses their concerns while still achieving the benefits of IaC?

   • AHire additional administrators to handle the increased workload.
   • BAdopt a declarative IaC tool with a visual designer and version-controlled templates.
   • CUse a scripting language to automate configuration, but do not version control the scripts.
   • DContinue with manual configuration but document all steps in a runbook.
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5. 24foundation · easy

   What is the core idea behind the immutability principle in IaC?

   • AInfrastructure components are replaced rather than modified after deployment
   • BInfrastructure code cannot be changed after it is written
   • CAll infrastructure must be deployed on physical servers only
   • DInfrastructure is configured manually after deployment to ensure stability
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6. 25application · medium

   An organization currently provisions infrastructure through a cloud provider's web console. They want to adopt a practice that allows them to version control their infrastructure definitions, review changes through pull requests, and automatically deploy to multiple environments. Which practice should they adopt?

   • AConfiguration management
   • BContinuous integration
   • CImmutable infrastructure
   • DInfrastructure as Code (IaC)
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