CDP DevOps Culture & Agile Practices Flashcards

In DevOps, what is 'mean time to recovery' (MTTR) a measure of?

Answer: The average time to restore a service after a failure

MTTR measures the average time it takes to restore a system or service to normal operation after a failure occurs.

Which Agile framework organizes work into fixed-length iterations called sprints, typically 1-4 weeks?

Answer: Scrum

Scrum uses time-boxed sprints with defined ceremonies (planning, daily standup, review, retrospective) to deliver incremental value.

What is the purpose of a 'Definition of Done' (DoD) in Agile DevOps teams?

Answer: A shared checklist of criteria that must be met before a work item is considered complete

The Definition of Done is a shared agreement on all conditions — coding, testing, documentation — that must be satisfied before a story is marked complete.

Which DevOps concept involves progressively routing a small percentage of production traffic to a new version before a full rollout?

Answer: Canary deployment

A canary deployment sends a small fraction of real traffic to the new version to validate it before gradually increasing the rollout.

What does 'infrastructure immutability' mean in modern DevOps practices?

Answer: Servers are never modified in place; instead, new instances replace old ones

Immutable infrastructure means that once a server or container is deployed, it is never patched or modified; any change requires deploying a new instance.

Which practice involves development teams deploying small, frequent code changes to production multiple times per day?

Answer: Continuous Deployment

Continuous Deployment automatically releases every code change that passes all pipeline stages directly to production without manual approval.