DevOps DevOps 5

Question 1

What is 'configuration drift'?

Accepted Answer

When environments diverge from their defined desired state over time

Answer

Configuration drift happens when running infrastructure gradually deviates from its declared configuration.

Question 2

Why are 'health checks' important in load-balanced systems?

Accepted Answer

They let the load balancer route traffic only to healthy instances

Answer

Health checks allow the load balancer to stop sending traffic to unhealthy or failing instances.

Question 3

What does 'immutable infrastructure' mean?

Accepted Answer

Servers are never modified in place; changes mean replacing the instance

Answer

Immutable infrastructure replaces instances entirely instead of modifying them, ensuring consistency.

Question 4

In Kubernetes, what does a 'ConfigMap' store?

Accepted Answer

Non-sensitive configuration data decoupled from container images

Answer

A ConfigMap holds non-sensitive configuration data separately from the application image.

Question 5

What is the purpose of 'feature flags' in continuous delivery?

Accepted Answer

Enabling or disabling features at runtime without redeploying

Answer

Feature flags let teams toggle functionality on or off at runtime, decoupling deployment from release.

DevOps Practice Test