Docker and Kubernetes - Day-3

Which Kubernetes component manages the assigning PODs to nodes?

• etcd

• API Server

• Scheduler

• POD Controller

What is the name of namespace in Kubernetes which is used for special cluster purposes?

• Default

• kube-system

• kube-config

• kubesystem

An abstraction in Kubernetes which allows access to a logical set of Pods is?

• kube-proxy

• Service

• Deployment

• LoadBalancer

What you can use in Kubernetes to ensure that your application is ready to handle incoming traffic?

• Liveness Probe

• Readiness Probe

• Service Probe

• Startup time Probe

If the given POD is restarted what will happen to its IP address?

• Will be the same. Only recreating the POD assigns new IP

• Will change to new one

• Will be hold until POD finish with state Failed

• Will move to new instance of the POD

What is the correct FQDN for service "nginx" in namespace "app"?

• nginx.app.local

• nginx.app.svc.cluster.local

• nginx.app.cluster.local

• nginx.svc.cluster.local

Why is the old ReplicaSet keep around (but scaled down to 0)?

• It can be then reuse by new deployment of the same type of PODs

• In case of rollback

• In case of red-pin deployment type

• In case of red-green deployment type

What Kubernetes service type only works with cloud-provider?

• ClusterIP

• NodePort

• CloudService

• LoadBalancer

Does removing the StatefulSet also remove associated PersistentVolumeClaims?

• Yes

• No

• It depends on StatefulSetPolicy

What is an initContainer?

• It is container that run before the main container

• It is container that initialize the data for main container

• It is container that is run when a K8s cluster boots up

• It is container with init process for main container