SRE Automation Tools & Infrastructure as Code 2

Question 1

Which Terraform command shows a preview of changes without applying them?

Accepted Answer

terraform plan

Answer

`terraform plan` generates an execution plan showing what actions Terraform will take without making any actual changes.

Question 2

In Ansible, what is the purpose of an 'inventory' file?

Accepted Answer

Lists the managed hosts and groups

Answer

The inventory file defines the hosts and host groups that Ansible will manage and run playbooks against.

Question 3

What does 'idempotency' mean in the context of infrastructure automation?

Accepted Answer

Running the same operation multiple times produces the same result

Answer

Idempotency means that applying the same configuration multiple times has no additional effect beyond the first application.

Question 4

Which tool is primarily used for immutable infrastructure image creation?

Accepted Answer

Packer

Answer

Packer is a HashiCorp tool that automates the creation of identical machine images for multiple platforms from a single configuration.

Question 5

In a GitOps workflow, what serves as the single source of truth for infrastructure state?

Accepted Answer

A Git repository

Answer

GitOps uses a Git repository as the authoritative source of truth, with automated processes reconciling actual infrastructure state to match it.

(SRE) Site Reliability Engineering Foundation Certification Practice Test