Review Questions

You can find the answers in the Appendix.

1. A new engineer is asking for clarification about when it is best to use Kubernetes and when to use instance groups. You point out that Kubernetes uses instance groups. What purpose do instance groups play in a Kubernetes cluster?

   1. They monitor the health of instances.
   2. They create pods and deployments.
   3. They create sets of VMs that can be managed as a unit.
   4. They create alerts and notification channels.

2. What kinds of instances are required to have a Kubernetes cluster?

   1. A cluster master and nodes to execute workloads.
   2. A cluster master, nodes to execute workloads, and Stackdriver nodes to monitor node health.
   3. Kubernetes nodes; all instances are the same.
   4. Instances with at least four vCPUs.

3. What is a pod in Kubernetes?

   1. A set of containers
   2. Application code deployed in a Kubernetes cluster
   3. A single instance of a running process in a cluster
   4. A controller that manages communication between clients and Kubernetes services
   ...