Juniper JN0-213 Practice Test - Questions Answers, Page 4

Network Functions Virtualization (NFV) is a network architecture concept that uses IT virtualization technologies to virtualize entire classes of network node functions into building blocks that may connect or chain together to create communication services3.The NFV framework explains how Virtual Network Functions (VNFs) fit into the whole solution4.The NFV Infrastructure (NFVI) is a component of NFV that consists of the infrastructure components ---compute, storage, networking---on a platform to support software4. Reference from Juniper site:Red Hat,VMware,Wikipedia

There are two available installation methods for an OpenShift cluster.One is the installer-provisioned infrastructure method56, and the other is the user-provisioned infrastructure method56. Reference from Juniper site:VMware NSX Container Plugin,OpenShift Container Platform 4.10 Documentation

In Kubernetes, all containers within a pod share the same IP address7.A ClusterIP service exposes pods to internal traffic only87. Reference from Juniper site:IBM,Kubernetes Documentation

Infrastructure as a Service (IaaS) is a cloud service model that provides access to networking, storage, servers, and virtualization in a cloud environment91011. Reference from Juniper site:IBM,Google Cloud,Stackscale

A Kubernetes deployment is a resource object in Kubernetes that provides declarative updates to applications.It allows you to describe an application's life cycle, such as which images to use for the app, the number of pods there should be, and the way in which they should be updated1. Two reasons to create a Kubernetes deployment rather than work with pods directly are:

A deployment ensures that the desired number of pods is running at all times1. If a pod crashes, the Deployment will automatically re-create it.

A deployment simplifies pod updates and roll-outs1.It allows you to describe a desired state in its specification and the Deployment controller changes the actual state to the desired state at a controlled rate1. Reference from Juniper site:Kubernetes Documentation

To view pods with their IP addresses in OpenShift, you would use the commandoc get pods -o wide23.This command provides additional information such as the IP address and the node where the pod is located23. Reference from Juniper site:OpenShift Documentation,Stack Overflow

Overlay virtual networks are virtual logical networks constructed on top of an existing network using network virtualization technologies45.They decouple network services from the physical networking and interconnection technologies on the underlay network45. Two true statements about overlay virtual networks are:

Overlay virtual networks work well on an IP spine-and-leaf topology6.They can be created over underlay networks using network virtualization technologies4.

Overlay virtual networks allow both Layer 2 and Layer 3 communication65.They can serve not only different services (such as multiple departments) of the same tenant but also different tenants4. Reference from Juniper site:Microsoft Learn,Huawei IP Encyclopedia,Network Insight

CN2 (Cranial Nerve II), also known as the optic nerve, controls the special sense of vision.It transmits visual information from the retina to the vision centers of the brain78. Two functions that CN2 provides are:

It provides enhanced networking capabilities to private clouds78.It transmits special afferent impulses of light to the brain and is involved in several reflex arcs related to the ocular system7.

It provides an orchestration solution for VMs and containers78.It is a unique structure that functions as the bridge between the retinal layer of the eyes and the visual cortex of the brain7. Reference from Juniper site:Kenhub,Geeky Medics

Docker containers are designed to be ephemeral, meaning they run based on their current configuration. When a Docker container is stopped, it does not automatically save changes made during its runtime. When you executedocker run, it starts a new instance of the container, not an existing version with its changes[14-16]. If you want to persist changes between runs, you need to commit changes to a new Docker image or use Docker volumes for data persistence[14-16]. Reference from Juniper site: Stack Overflow, Docker Docs