Kubernetes Certification Administrator
Exam
API server - correct answer-Also known as:kube-apiserver
The API server is a component of the Kubernetes control plane that exposes the Kubernetes
API. The API server is the front end for the Kubernetes control plane.
[-]
The main implementation of a Kubernetes API server is kube-apiserver. kube-apiserver is
designed to scale horizontally—that is, it scales by deploying more instances. You can run
several instances of kube-apiserver and balance traffic between those instances.
App Container - correct answer-Application containers (or app containers) are the containers
in a pod that are started after any init containers have completed.
[-]
An init container lets you separate initialization details that are important for the overall
workload, and that don't need to keep running once the application container has started. If a
pod doesn't have any init containers configured, all the containers in that pod are app
containers.
CIDR - correct answer-CIDR (Classless Inter-Domain Routing) is a notation for describing
blocks of IP addresses and is used heavily in various networking configurations.
[-]
In the context of Kubernetes, each Node is assigned a range of IP addresses through the
start address and a subnet mask using CIDR. This allows Nodes to assign each Pod a
unique IP address. Although originally a concept for IPv4, CIDR has also been expanded to
include IPv6.
Cluster - correct answer-A set of worker machines, called nodes, that run containerized
applications. Every cluster has at least one worker node.
[-]
The worker node(s) host the Pods that are the components of the application workload. The
control plane manages the worker nodes and the Pods in the cluster. In production
environments, the control plane usually runs across multiple computers and a cluster usually
runs multiple nodes, providing fault-tolerance and high availability.
Container - correct answer-A lightweight and portable executable image that contains
software and all of its dependencies.
[-]
Containers decouple applications from underlying host infrastructure to make deployment
easier in different cloud or OS environments, and for easier scaling.
Control Plane - correct answer-The container orchestration layer that exposes the API and
interfaces to define, deploy, and manage the lifecycle of containers.
[-]
This layer is composed by many different components, such as (but not restricted to):
Exam
API server - correct answer-Also known as:kube-apiserver
The API server is a component of the Kubernetes control plane that exposes the Kubernetes
API. The API server is the front end for the Kubernetes control plane.
[-]
The main implementation of a Kubernetes API server is kube-apiserver. kube-apiserver is
designed to scale horizontally—that is, it scales by deploying more instances. You can run
several instances of kube-apiserver and balance traffic between those instances.
App Container - correct answer-Application containers (or app containers) are the containers
in a pod that are started after any init containers have completed.
[-]
An init container lets you separate initialization details that are important for the overall
workload, and that don't need to keep running once the application container has started. If a
pod doesn't have any init containers configured, all the containers in that pod are app
containers.
CIDR - correct answer-CIDR (Classless Inter-Domain Routing) is a notation for describing
blocks of IP addresses and is used heavily in various networking configurations.
[-]
In the context of Kubernetes, each Node is assigned a range of IP addresses through the
start address and a subnet mask using CIDR. This allows Nodes to assign each Pod a
unique IP address. Although originally a concept for IPv4, CIDR has also been expanded to
include IPv6.
Cluster - correct answer-A set of worker machines, called nodes, that run containerized
applications. Every cluster has at least one worker node.
[-]
The worker node(s) host the Pods that are the components of the application workload. The
control plane manages the worker nodes and the Pods in the cluster. In production
environments, the control plane usually runs across multiple computers and a cluster usually
runs multiple nodes, providing fault-tolerance and high availability.
Container - correct answer-A lightweight and portable executable image that contains
software and all of its dependencies.
[-]
Containers decouple applications from underlying host infrastructure to make deployment
easier in different cloud or OS environments, and for easier scaling.
Control Plane - correct answer-The container orchestration layer that exposes the API and
interfaces to define, deploy, and manage the lifecycle of containers.
[-]
This layer is composed by many different components, such as (but not restricted to):
