Release on Demand Flashcards
6 cards from real SAFe® 5 DevOps Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Release on Demand flashcards as text
In a blue/green deployment strategy, what happens when a critical problem is detected after releasing to the 'green' environment?
Answer: Traffic is instantly switched back to the stable 'blue' environment
Blue/green deployment enables instant rollback by switching all traffic back to the known-good blue environment the moment issues are detected in green.
What is the primary advantage of canary releases in SAFe DevOps?
Answer: They expose new features to a small percentage of users to detect issues before full rollout
Canary releases limit blast radius by exposing changes to a small user subset first, enabling detection of real-world issues before they affect all users.
Which deployment pattern achieves zero-downtime deployments by incrementally replacing old instances with new ones?
Answer: Rolling deployment
Rolling deployments incrementally replace old instances with new ones, maintaining service availability throughout the entire deployment process.
In SAFe DevOps, what is the purpose of a 'dark launch' or 'dark deployment'?
Answer: To release code to production and test it at scale without users knowing or seeing the feature
Dark launches deploy new code to production and test it under real traffic load without users seeing or interacting with the new feature.
A SAFe DevOps team wants to test a new recommendation engine with 5% of their users before full rollout. Which deployment strategy should they use?
Answer: Canary release
Canary releases are designed for gradually exposing new changes to a controlled small percentage of users before committing to full deployment.
What is the main risk mitigation benefit of maintaining both blue and green environments in blue/green deployment?
Answer: It provides an instant, tested rollback path if the new release causes critical issues
Blue/green's primary risk mitigation is the immediate rollback capability — traffic can be switched back to the idle blue environment instantly.