JN0-214 Certification Overview - [Dec 12, 2024] Latest JN0-214 PDF Dumps
The Best Juniper JN0-214 Study Guides and Dumps of 2024
NEW QUESTION # 12
You are provisioning workloads on worker nodes in a Kubernetes cluster.
Which CN2 component is responsible for generating associated routes?
- A. vRouter agent microservice
- B. Contrail kube-manager
- C. Configuration Resource (CR) controllers
- D. vRouter forwarding plane
Answer: A
Explanation:
The vRouter agent microservice is the CN2 component responsible for generating associated routes. When a pod is scheduled on a node, the vRouter agent on that node programs the necessary routes in the kernel routing table to ensure that traffic destined for that pod is properly routed.
NEW QUESTION # 13
Which container runtime engine is used by default in OpenShift?
- A. runC
- B. cri-o
- C. containerd
- D. Docker
Answer: B
Explanation:
The default container runtime engine used by OpenShift is cri-o. CRI-O is an open source, community-driven container engine. Its primary goal is to replace the Docker service as the container engine for Kubernetes implementations, such as OpenShift Container Platform.
NEW QUESTION # 14
You want to view pods with their IP addresses in OpenShift.
Which command would you use to accomplish this task?
- A. oc get all
- B. oc get pods -o yaml
- C. oc get pods -o wide
- D. oc get pods
Answer: C
Explanation:
To view pods with their IP addresses in OpenShift, you would use the command oc get pods -o wide. This command provides additional information such as the IP address and the node where the pod is located.
NEW QUESTION # 15
Which OpenStack service provides API client authentication?
- A. Neutron
- B. Keystone
- C. Nova
- D. iHeat
Answer: B
Explanation:
Keystone is an OpenStack service that provides API client authentication. It provides API client authentication, service discovery, and distributed multi-tenant authorization by implementing OpenStack's Identity API.
NEW QUESTION # 16
What are the two characteristics of the Network Functions Virtualization (NFV) framework?
(Choose two.)
- A. It implements virtualized tunnel endpoints.
- B. It decouples the network software from the hardware.
- C. It implements virtualized network functions
- D. It decouples the network control plane from the forwarding plane.
Answer: B,C
Explanation:
The two characteristics of the Network Functions Virtualization (NFV) framework are that it implements virtualized network functions (VNFs) and that it decouples the network software from the hardware. According to the NFV overview by VMware, NFV is "designed to deliver the network services needed to support an infrastructure totally independent from hardware by decoupling network functions from proprietary purpose-built hardware appliances" and that "the software that provides these network services are known as virtual network functions (VNFs) and run on generic hardware". Other characteristics that are mentioned in the question are related to Software Defined Networking (SDN), not NFV. SDN separates the network control plane from the forwarding plane and implements virtualized tunnel endpoints.
NEW QUESTION # 17
Which two statements are true regarding isolated namespaces in Juniper Cloud-Native Contrail Networking (CN2)? (Choose two.)
- A. Pods in isolated namespaces can only communicate with pods in the same namespace.
- B. Pods in isolated namespaces can reach services in non-isolated namespaces.
- C. Pods in isolated namespaces can communicate with pods in non-isolated namespaces.
- D. Pods in isolated namespaces can only reach services in the same namespace.
Answer: A,D
Explanation:
In Juniper Cloud-Native Contrail Networking (CN2), isolated namespaces are used to isolate a pod from other pods without explicitly configuring a network policy. Pods in an isolated namespace can only communicate with pods in the same namespace. They cannot reach pods or services in other isolated or non-isolated namespaces.
NEW QUESTION # 18
Which component of Kubernetes runs on all nodes and ensures that the containers are running in a pod?
- A. kubelel
- B. kube controller
- C. container runtime
- D. kube-proxy
Answer: A
Explanation:
The kubelet is a component of Kubernetes that runs on all nodes in the cluster and ensures that containers are running in a pod. It takes a set of PodSpecs that are provided through various mechanisms and ensures that the containers described in those PodSpecs are running and healthy.
NEW QUESTION # 19
Which cloud automation tool uses YAML playbooks to install software and tools on servers?
- A. Ansible
- B. Heat
- C. Python
- D. Terraform
Answer: A
Explanation:
According to the Ansible documentation4, Ansible playbooks are "automation blueprints, in YAML format, that Ansible uses to deploy and configure nodes in an inventory". Other cloud automation tools that are mentioned in the question are Terraform, which uses HCL (HashiCorp Configuration Language) or JSON files to provision infrastructure resources; Python, which is a general-purpose programming language that can be used for various automation tasks; and Heat, which is an orchestration service for OpenStack that uses HOT (Heat Orchestration Template) or CFN (AWS CloudFormation) formats to describe stacks of cloud resources.
NEW QUESTION # 20
You must provide tunneling in the overlay that supports multipath capabilities.
Which two protocols provide this function? (Choose two.)
- A. MPLSoUDP
- B. VXLAN
- C. VPN
- D. MPLSoGRE
Answer: A,B
Explanation:
MPLSoUDP (Multiprotocol Label Switching over User Datagram Protocol) and VXLAN (Virtual Extensible LAN) are two protocols that provide tunneling in the overlay and support multipath capabilities. MPLSoUDP is an encapsulation protocol that allows MPLS packets to be encapsulated in UDP packets. VXLAN is a network virtualization technology that attempts to address the scalability problems associated with large cloud computing deployments.
NEW QUESTION # 21
Which term identifies to which network a virtual machine interface is connected?
- A. virtual tunnel endpoint (VTEP)
- B. Virtual Extensible LAN (VXLAN)
- C. machine access control (MAC)
- D. virtual network ID (VNID)
Answer: D
Explanation:
The term that identifies to which network a virtual machine interface is connected is the virtual network ID (VNID). The VNID is a unique identifier assigned to each virtual network. It is used to differentiate between different virtual networks and to ensure that each virtual machine interface is connected to the correct network.
NEW QUESTION # 22
What is the function that enables CN2 to manage its resources and interact with the kube-api?
- A. the configuration plane
- B. the control plane
- C. the data plane
- D. the management plane
Answer: A
Explanation:
The configuration plane is the function that enables CN2 to manage its resources and interact with the kube-api. The configuration plane is responsible for storing and managing all configuration data in a Contrail cluster. It provides APIs for other components to retrieve this data.
This allows CN2 to manage its resources and interact with the kube-api.
NEW QUESTION # 23
Which component of an SDN architecture is responsible for configuring and maintaining devices and their state?
- A. the management plane
- B. the data plane
- C. the forwarding plane
- D. the operational plane
Answer: A
Explanation:
The management plane in an SDN architecture is responsible for configuring and maintaining devices and their state. It provides the functions that manage the network, such as configuration, monitoring, and management of network devices. It is the layer of the network that carries administrative traffic, which is used for the network management.
NEW QUESTION # 24
You just uploaded a qcow2 image of a vSRX virtual machine in OpenStack.
In this scenario, which service stores the virtual machine (VM) image?
- A. Neutron
- B. Glance
- C. Nova
- D. Ironic
Answer: B
Explanation:
The service that stores the virtual machine (VM) image in OpenStack is Glance. Glance is the image service in OpenStack that allows you to discover, register, retrieve, and store virtual machine images.
NEW QUESTION # 25
Which two tools are used to deploy a Kubernetes environment for testing and development purposes? (Choose two.)
- A. OpenStack
- B. oc
- C. minikube
- D. kind
Answer: C,D
Explanation:
Minikube and kind are two tools that are commonly used to deploy a Kubernetes environment for testing and development purposes.
NEW QUESTION # 26
Which two statements are true about virtual networks? (Choose two.)
- A. Virtual networks are able to span multiple devices.
- B. Virtual networks are available only as part of a cloud orchestration system.
- C. Virtual networks are available on common Linux distributions.
- D. Virtual networks are limited to a single device.
Answer: A,C
Explanation:
Virtual networks are logical networks that are decoupled from the underlying network hardware.
This decoupling allows network administrators to manage their networks independently of the physical network topology. As such, virtual networks can span multiple devices, allowing for a high degree of flexibility and scalability. Furthermore, virtual networks are available on common Linux distributions, allowing for easy deployment and management.
NEW QUESTION # 27
What is the networking service of OpenStack?
- A. Neutron
- B. Heat
- C. Barbican
- D. ironic
Answer: A
Explanation:
OpenStack's networking service is known as Neutron. Neutron provides a scalable, API-driven, web services-based model for network connectivity as a service. It is designed to manage and configure networking services for both simple and complex network topologies. Neutron allows users to create their own networks, control traffic and connect servers and devices to one or multiple networks.
NEW QUESTION # 28
Your company has a Web app hosted in Kubernetes with a fluctuating number of pods.
In this scenario, which Kubernetes service type would provide equal access to all nodes using a single URL?
- A. ClusterIP
- B. LoadBalancer
- C. ExternalName
- D. NodePort
Answer: B
Explanation:
The LoadBalancer service type in Kubernetes exposes the service externally using a cloud provider's load balancer. NodePort and ClusterIP services, to which the external load balancer routes, are automatically created.
NEW QUESTION # 29
You are deploying CN2 using Kubernetes as your orchestrator.
In this scenario, which component contains the vRouter agent?
- A. Contrail controller
- B. worker node
- C. kube-manager
- D. Ikube-scheduler
Answer: B
Explanation:
In a CN2 deployment using Kubernetes as the orchestrator, the vRouter agent is contained in the worker node. The vRouter agent is responsible for managing the forwarding plane on each node in a Contrail cluster. It interacts with the kernel to manage the services and interfaces within the virtual networks.
NEW QUESTION # 30
Which two statements about Kubernetes are correct? (Choose two.)
- A. Each container within a pod has a unique IP address.
- B. A ClusterlP service exposes pods to internal traffic only.
- C. A ClusterlP service exposes pods to internal and external traffic.
- D. All containers within a pod share the same IP address.
Answer: B,D
Explanation:
In Kubernetes, all containers within a pod share the same IP address. A ClusterIP service exposes pods to internal traffic only.
NEW QUESTION # 31
Your organization has legacy virtual machine workloads that need to be managed within a Kubernetes deployment.
Which Kubernetes add-on would be used to satisfy this requirement?
- A. Canal
- B. KubeVirt
- C. ADOT
- D. Romana
Answer: B
Explanation:
KubeVirt is a Kubernetes add-on that allows you to run and manage legacy virtual machine workloads alongside container workloads within a Kubernetes deployment. According to the KubeVirt website, KubeVirt is "a virtual machine management add-on for Kubernetes" that "aims to provide a common ground for virtualization solutions on top of Kubernetes". Other Kubernetes add- ons that are mentioned in the question are Canal, which is a network policy provider that combines Flannel and Calico; ADOT, which is a distribution of the OpenTelemetry Collector that supports tracing and metrics collection for AWS services; and Romana, which is a network and security automation solution that supports multiple network topologies and policies.
NEW QUESTION # 32
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. There are no projects.
- B. There are no virtual machines.
- C. There are no compute nodes.
- D. There are no services.
Answer: B
Explanation:
There are no virtual machines. Referring to the exhibit, which shows the output of the openstack server list command, we can see that there are no rows in the table, which means that there are no servers (or virtual machines) in the OpenStack environment. The command openstack server list is used to list servers that you can access. The other statements are incorrect, because the exhibit does not show any information about projects, services, or compute nodes. To list projects, you would use the command openstack project list. To list services, you would use the command openstack service list. To list compute nodes, you would use the command openstack compute service list.
NEW QUESTION # 33
In the CN2 architecture, which component integrates with the orchestrator to listen for changes and take action on any events affecting network resources?
- A. kube-a pi server
- B. contrail-k8s-kubemanaqer
- C. cni.bin
- D. contrail-vrouter-agent
Answer: B
Explanation:
contrail-k8s-kubemanager is the component in the CN2 architecture that integrates with the orchestrator (such as Kubernetes or OpenShift) to listen for changes and take action on any events affecting network resources. According to the CN2 components documentation2, contrail- k8s- kubemanager is "the interface between Kubernetes resources and Contrail resources" that
"watches the kube-apiserver for changes to regular Kubernetes resources such as service and namespace and acts on any changes that affect the networking resources". Other components in the CN2 architecture are contrail-k8s-apiserver2, which is an aggregated API server that manages all Contrail resources; cni.bin, which is a binary file that implements the Container Network Interface (CNI) specification for CN2; and contrail-vrouter-agent, which is a pod that runs on every node and communicates with the CN2 control plane to program the data plane.
NEW QUESTION # 34
Which two statements are correct about Kubernetes resources? (Choose two.)
- A. A deploymentConfig is a Kubernetes resource.
- B. A daemonSet ensures that a replica of a pod is running on all nodes.
- C. NodePort service exposes the service externally by using a cloud provider load balancer.
- D. A ClusterIP type service can only be accessed within a Kubernetes cluster.
Answer: B,D
Explanation:
A daemonSet in Kubernetes ensures that a replica of a pod is running on all nodes. A ClusterIP type service can only be accessed within a Kubernetes cluster.
NEW QUESTION # 35
Which two statements are correct about OpenShift monitoring? (Choose two.)
- A. OpenShifis able to configure customized alerts.
- B. OpenShifhas its own monitoring framework.
- C. OpenShifis not able to configure customized alerts.
- D. OpenShifmonitoring is not compatible with Grafana.
Answer: A,B
Explanation:
OpenShift includes a preconfigured, preinstalled, and self-updating monitoring stack that provides monitoring for core platform components. You also have the option to enable monitoring for user- defined projects. This means OpenShift has its own monitoring framework (B) and is able to configure customized alerts (D).
NEW QUESTION # 36
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