CS DevOps & Deployment 5

Question 1

During an incident, a team follows a documented runbook. What is a runbook?

Accepted Answer

A step-by-step guide of procedures for handling specific operational scenarios

Answer

A runbook documents the exact operational steps for routine tasks or incident response so anyone on the team can execute them.

Question 2

What does a load balancer's health check accomplish in a deployment architecture?

Accepted Answer

It removes unhealthy instances from traffic rotation until they recover

Answer

Health checks periodically probe backend instances and stop routing traffic to any instance that fails to respond correctly.

Question 3

A team practices GitOps for Kubernetes deployments. What is the core idea?

Accepted Answer

The Git repository is the single source of truth, and an agent syncs cluster state to match it

Answer

In GitOps, desired infrastructure state lives in Git, and tools like Argo CD or Flux continuously reconcile the cluster to match it.

Question 4

What is the purpose of a staging environment in the deployment lifecycle?

Accepted Answer

Providing a production-like environment to validate releases before they reach real users

Answer

Staging mirrors production closely so teams can catch environment-specific issues before deploying to real users.

Question 5

Which scenario best illustrates horizontal scaling in response to increased traffic?

Accepted Answer

Adding more server instances behind a load balancer

Answer

Horizontal scaling adds more machines to share the load, whereas vertical scaling upgrades a single machine's resources.

(CS) Computer Science Practice Test