You're developing a new microservice for an application running on Kubernetes. The service requires access to a database hosted in a separate Kubernetes cluster. How would you ensure secure communication between your microservice and the database?

• A.Use a shared secret stored in an environment variable within the microservice pod
• B.Configure a service mesh to handle encryption and authentication between the services.
• C.Set up a VPN connection between the two Kubernetes clusters-
• D.Use an API gateway to proxy requests between the services.
• E.Configure a Kubernetes Ingress resource to route traffic to the database

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You are running a stateless application on Kubernetes and want to avoid persistent storage. Which of the following options is suitable?

• A.Use a PersistentVolumeClaim with a storage class that provides persistent storage.
• B.Mount a HostPath volume to access the host machine's filesystem.
• C.Use an emptyDir volume to create a temporary directory within the pod.
• D.Utilize a ConfigMap to store application configuration data.
• E.Create a Local Persistent Volume for each pod.

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What is the name for a service that has no clusterIp address?

• A.Headless
• B.NodePort
• C.ClusterIP
• D.LoadBalancer

Correct Answer: A

https://kubernetes.io/docs/concepts/services-networking/service/#headless-services

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Your application requires specific network configurations for its pods, including custom DNS settings and network namespaces. How can you achieve this in Kubernetes?

• A.Use a NetworkPolicy to define custom network rules for the pods.
• B.Configure a Pod's security context with specific network settings.
• C.Use a DaemonSet to deploy a network configuration agent on each node.
• D.Create a custom network plugin and integrate it with Kubernetes-
• E.Modify the Kubernetes API server's network configuration settings.

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You want to deploy a new microservice to your Kubernetes cluster using GitOps principles. Which of
the following approaches would you use to manage the deployment process?

• A.Manually create and apply Kubernetes YAML files using 'kubectl apply'.
• B.Use a CI/CD pipeline to build and deploy the microservice directly to the cluster.
• C.Store the desired state of your microservice (deployment configuration, service definition, etc.) in a Git repository and use a GitOps tool like Flux or ArgoCD to manage deployments.
• D.Use a Helm chart to package and manage the deployment of your microservice.
• E.Use a Kubernetes Operator to automate the deployment and management of your microservice.

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