Domain​ ​1:​ ​Orchestration​ ​(25%​ ​of​ ​exam)

● Complete the setup of a swarm mode cluster, with managers and worker nodes
● State the differences between running a container vs running a service
● Demonstrate steps to lock a swarm cluster
● Extend the instructions to run individual containers into running services under swarm
● Interpret the output of “docker inspect” commands
● Convert an application deployment into a stack file using a YAML compose file with
“docker stack deploy”
● Manipulate a running stack of services
● Increase # of replicas
● Add networks, publish ports
● Mount volumes
● Illustrate running a replicated vs global service
● Identify the steps needed to troubleshoot a service not deploying
● Apply node labels to demonstrate placement of tasks
● Sketch how a Dockerized application communicates with legacy systems
● Paraphrase the importance of quorum in a swarm cluster
● Demonstrate the usage of templates with “docker service create”

Domain​ ​2:​ ​Image​ ​Creation,​ ​Management,​ ​and​ ​Registry​ ​(20%​ ​of​ ​exam)
Content may include the following:
● Describe Dockerfile options [add, copy, volumes, expose, entrypoint, etc)
● Show the main parts of a Dockerfile
● Give examples on how to create an efficient image via a Dockerfile
● Use CLI commands such as list, delete, prune, rmi, etc to manage images
● Inspect images and report specific attributes using filter and format
● Demonstrate tagging an image
● Utilize a registry to store an image
● Display layers of a Docker image
● Apply a file to create a Docker image
● Modify an image to a single layer
● Describe how image layers work
● Deploy a registry (not architect)
● Configure a registry
● Log into a registry
● Utilize search in a registry
● Tag an image
● Push an image to a registry
● Sign an image in a registry
● Pull an image from a registry
● Describe how image deletion works
● Delete an image from a registry

Domain​ ​3:​ ​Installation​ ​and​ ​Configuration​ ​(15%​ ​of​ ​exam)
Content may include the following:
● Demonstrate the ability to upgrade the Docker engine
● Complete setup of repo, select a storage driver, and complete installation of Docker
engine on multiple platforms
● Configure logging drivers (splunk, journald, etc)
● Setup swarm, configure managers, add nodes, and setup backup schedule
● Create and manager user and teams
● Interpret errors to troubleshoot installation issues without assistance
● Outline the sizing requirements prior to installation
● Understand namespaces, cgroups, and configuration of certificates
● Use certificate-based client-server authentication to ensure a Docker daemon has the
rights to access images on a registry
● Consistently repeat steps to deploy Docker engine, UCP, and DTR on AWS and on
premises in an HA config
● Complete configuration of backups for UCP and DTR
● Configure the Docker daemon to start on boot

Domain​ ​4:​ ​Networking​ ​(15%​ ​of​ ​exam)
Content may include the following:
● Create a Docker bridge network for a developer to use for their containers
● Troubleshoot container and engine logs to understand a connectivity issue between
containers
● Publish a port so that an application is accessible externally
● Identify which IP and port a container is externally accessible on
● Describe the different types and use cases for the built-in network drivers
● Understand the Container Network Model and how it interfaces with the Docker engine
and network and IPAM drivers
● Configure Docker to use external DNS
● Use Docker to load balance HTTP/HTTPs traffic to an application (Configure L7 load
balancing with Docker EE)
● Understand and describe the types of traffic that flow between the Docker engine,
registry, and UCP controllers
● Deploy a service on a Docker overlay network
● Describe the difference between “host” and “ingress” port publishing mode

Domain​ ​5:​ ​Security​ ​(15%​ ​of​ ​exam)
Content may include the following:
● Describe the process of signing an image
● Demonstrate that an image passes a security scan
● Enable Docker Content Trust
● Configure RBAC in UCP
● Integrate UCP with LDAP/AD
● Demonstrate creation of UCP client bundles
● Describe default engine security
● Describe swarm default security
● Describe MTLS
● Identity roles
● Describe the difference between UCP workers and managers
● Describe process to use external certificates with UCP and DTR

Domain​ ​6:​ ​Storage​ ​and​ ​Volumes​ ​(10%​ ​of​ ​exam)
Content may include the following:
● State which graph driver should be used on which OS
● Demonstrate how to configure devicemapper
● Compare object storage to block storage, and explain which one is preferable when available
● Summarize how an application is composed of layers and where those layers reside on
the filesystem
● Describe how volumes are used with Docker for persistent storage
● Identify the steps you would take to clean up unused images on a filesystem, also on
DTR
● Demonstrate how storage can be used across cluster nodes

CKA

CKACurriculumV1.13.0
5%-Scheduling
•Use label selectors to schedule Pods.
•Understand the role of Daemon Sets.
•Understand how resource limits can affect Pod scheduling.
•Understand how to run multiple schedulers and how to configure Pods
to use them.
•Manually schedule a pod without a scheduler.
•Display scheduler events.
•Know how to configure the Kubernetes scheduler.

5%-Logging/Monitoring
•Understand how to monitor all cluster components.
•Understand how to monitor applications.
•Manage cluster component logs.
•Manage application logs.

8%-Application Lifecycle Management
•Understand Deployment sand how to perform rolling updates and rollbacks.
•Know various ways to configure applications.
•Know how to scale applications.
•Understand the primitives necessary to create a self-healing application.
11%-Cluster
•Understand Kubernetes cluster upgrade process.
•Facilitate operating system upgrades.
•Implement backup and restore methodologies.

12%-Security 
•Know how to configure authentication and authorization.
•Understand Kubernetes security primitives.
•Know to configure network policies.
•Create and manage TLS certificates for cluster components.
•Work with images securely.
•Define security contexts.
•Secure persistent keyvalue store.

7%-Storage
•Understand persistent volumes and know how to create them.
•Understand access modes for volumes.
•Understand persistent volume claims primitive.
•Understand Kubernetes storage objects.
•Know how to configure applications with persistent storage.

10%-Troubleshooting
•Trouble shoot application failure.
•Trouble shoot control plane failure.
•Trouble shoot worker node failure.
•Trouble shoot networking.

19%-Core Concepts
•Understand the Kubernetes API primitives.
•Understand the Kubernetes cluster architecture.
•Understand Services and other network primitives.

11%-Networking
•Understand the networking configuration on the cluster nodes.
•Understand Pod networking concepts.
•Understand Service networking.
•Deploy and configure network loadbalancer.
•Know how to use Ingress rules.
•Know how to configure and use the cluster DNS.
•Understand CNI.

12%-Installation,Configuration &Validation
•Design a Kubernetes cluster.
•Install Kubernetes masters and nodes.
•Configure secure cluster communications.
•Configure a Highly-Available Kubernetes cluster.
•Know where to get the Kubernetes release binaries.
•Provision underlying infrastructure to deploy a Kubernetes cluster.
•Choose a network solution.
•Choose your Kubernetes infrastructure configuration.
•Run end-to-end tests on your cluster.
•Analyse end-to-end tests results.
•Run Node end-to-end tests.

CKAD

Certified Kubernetes Application Developer(CKAD) ExamCurriculum v1.13.0
This document provides the curriculum outline of the Knowledge,Skills and Abilities that
a Certified Kubernetes Application Developer (CKAD) can be expected to demonstrate.

13%-Core Concepts
•Understand Kubernetes API primitives
•Create and configure basic Pods

18%-Configuration
•Understand Config Maps
•Understand Security Contexts
•Define an application’s resource requirements
•Create & consume Secrets
•Understand Service Accounts

10% Multi-Container Pods 
•Understand Multi-Container Pod design patterns (e.g.ambassador,adapter,sidecar)

18%-Observability
•Understand Liveness Probesand
Readiness Probes
•Understand container logging
•Understand how to monitor applications in Kubernetes
•Understand debugging in Kubernetes

20%-PodDesign 
•Understand how to use Labels, Selectors, and Annotations
•Understand Deployments and how to perform rolling updates
•Understand Deployments and how to perform rollbacks
•Understand Jobs and CronJobs

13%-Services&Networking
•Understand Services
•Demonstrate basic understanding of Network Policies

8%-State Persistence
•Understand Persistent Volume Claims for storage

Most Probable Interview Questions for Docker Kubernetes