オンライン問題で最適なJN0-213試験練習問題（最新の67問題)
練習問題JN0-213素晴らしい練習用のCloud, Associate (JNCIA-Cloud)テスト問題
JN0-213認定試験は、クラウドコンピューティングやネットワーキングでキャリアを進めたい専門家にとって貴重な認定です。この認定は、Juniper Networks Cloud Technologiesを使用してクラウドソリューションの設計、展開、および管理に必要なスキルと知識を検証します。また、チーム環境で効果的に作業し、技術情報を非技術的な利害関係者に伝える能力も実証しています。
JN0-213試験に備えるため、受験者はJuniper Networksが提供するオンライントレーニングコース、学習ガイド、練習問題など、さまざまなリソースを活用することができます。試験はPearson VUEを通じて実施され、受験者はオンラインで試験に登録することができます。JN0-213認定を取得することで、個人はクラウドネットワークの課題に対応するために十分な装備を備え、潜在的な雇用主に示すことのできる貴重な資格を手に入れることができます。
質問 # 36
Which CN2 component provides the network control plane capability?
- A. contrail-k8s-kubemanaqer
- B. contrail-vrouter-nodes
- C. contrail-control
- D. contrail-k8s-controller
正解：C
解説：
Explanation
The network control plane in CN2 represents CN2's full-featured SDN capability. It communicates with other controllers and uses XMPP to communicate with the distributed data plane components on the worker nodes6.
References from Juniper site: Juniper Networks
質問 # 37
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.
正解：B、C
解説：
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 VMware3, 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.
質問 # 38
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The c using a custom flavor.
- B. The myvSRX instance is using a default image.
- C. The myvSRX instance is currently running.
- D. The myvSRX instance is part of a default network.
正解：A、C
解説：
Explanation
Based on the image description provided, the instance named 'myvSRX' appears to be using a custom flavor (not default) and is currently in an 'ACTIVE' state, which means it is running.
質問 # 39
The openstack user list command uses which OpenStack service?
- A. Nova
- B. Cinder
- C. Neutron
- D. Keystone
正解：D
解説：
Explanation
The openstack user list command uses the Keystone service, which is the identity service for OpenStack.
Keystone provides authentication, authorization, and service discovery for OpenStack. It also manages projects, users, roles, and endpoints for the OpenStack services
質問 # 40
You must provide tunneling in the overlay that supports multipath capabilities.
Which two protocols provide this function? (Choose two.)
- A. VXLAN
- B. MPLSoGRE
- C. MPLSoUDP
- D. VPN
正解：A、C
解説：
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 capabilities45.
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
質問 # 41
Which component of a software-defined networking (SDN) controller defines where data packets are forwarded by a network device?
- A. the operational plane
- B. the control plane
- C. the forwarding plane
C the management plane
正解：C
解説：
Explanation
The forwarding plane (also known as the data plane) of a software-defined networking (SDN) controller is responsible for forwarding data packets based on the instructions given by the control plane23. It handles all activities involving data packets sent by the end-user, including forwarding of packets2. References from Juniper site: GeeksforGeeks, SDxCentral
質問 # 42
What is the function that enables CN2 to manage its resources and interact with the kube-api?
- A. the configuration plane
- B. the management plane
- C. the data plane
- D. the control plane
正解：A
解説：
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.
質問 # 43
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. Nova
- B. Ironic
- C. Glance
- D. Neutron
正解：C
解説：
Explanation
The service that stores the virtual machine (VM) image in OpenStack is Glance91011. Glance is the image service in OpenStack that allows you to discover, register, retrieve, and store virtual machine images
質問 # 44
Click the Exhibit button.
Referring to the exhibit, what does port: 8080 represent?
- A. It is the port that is used by the external load balancer.
- B. It is the port that is exposed to clients that are external to the cluster.
- C. It is the port on which the webapp pod is listening.
- D. It is the port that is exposed to clients that are internal to the cluster.
正解：D
解説：
Explanation
In the context of a Kubernetes service, port: 8080 represents the port that is exposed to clients that are internal to the cluster45. This is the stable port the Service exposes inside the cluster - other Pods in the cluster send traffic to this port4. References from Juniper site: Nigel Poulton, Baeldung
質問 # 45
You are provisioning workloads on worker nodes in a Kubernetes cluster.
Which CN2 component is responsible for generating associated routes?
- A. Configuration Resource (CR) controllers
- B. vRouter forwarding plane
- C. vRouter agent microservice
- D. Contrail kube-manager
正解：C
解説：
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.
質問 # 46
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. NodePort
- D. ExternalName
正解：B
解説：
Explanation
The LoadBalancer service type in Kubernetes exposes the service externally using a cloud provider's load balancer67. NodePort and ClusterIP services, to which the external load balancer routes, are automatically created
質問 # 47
Which statement is correct about a vRouter?
- A. A vRouter uses virtual routing and forwarding (VRF) instances to create individual routing tables for each tenant.
- B. A vRouter uses logical systems to create individual routing tables for each tenant.
- C. A vRouter always provides a direct connection between a tenant VM and the underlay network.
- D. A vRouter can only provide connections to a single tenant's VM.
正解：A
解説：
Explanation
A vRouter uses virtual routing and forwarding (VRF) instances to create individual routing tables for each tenant. A VRF is a logical partition of a router's routing table that allows multiple instances of routing information to coexist on the same router. A vRouter can provide connections to multiple tenants' VMs by using different VRFs for each tenant
質問 # 48
Which two statements are correct about Network Functions Virtualization (NFV)? (Choose two.)
- A. The NFV infrastructure (NFVI) is not a component of NFV.
- B. The NFV framework is defined by the W3C.
- C. The NFV framework explains how VNFs fits into the whole solution.
- D. The NFV infrastructure (NFVI) is a component of NFV.
正解：C、D
解説：
Explanation
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. References from Juniper site: Red Hat, VMware, Wikipedia
質問 # 49
Which two statements are true regarding isolated namespaces in Juniper Cloud-Native Contrail Networking (CN2)? (Choose two.)
- A. Pods in isolated namespaces can only reach services in the same namespace.
- B. Pods in isolated namespaces can only communicate with pods in the same namespace.
- C. Pods in isolated namespaces can communicate with pods in non-isolated namespaces.
- D. Pods in isolated namespaces can reach services in non-isolated namespaces.
正解：A、B
解説：
Explanation
In Juniper Cloud-Native Contrail Networking (CN2), isolated namespaces are used to isolate a pod from other pods without explicitly configuring a network policy3. Pods in an isolated namespace can only communicate with pods in the same namespace3. They cannot reach pods or services in other isolated or non-isolated namespaces3.
質問 # 50
What is the networking service of OpenStack?
- A. Heat
- B. ironic
- C. Barbican
- D. Neutron
正解：D
解説：
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.
質問 # 51
Which two statements are correct about containers? (Choose two.)
- A. Containers reduce deployment efficiency.
- B. Containers require an underlying operating system.
- C. Containers include the entire operating system.
- D. Containers have faster boot times than VMs. www*
正解：B、D
解説：
Explanation
Containers are lightweight because they don't need the extra load of a hypervisor, but run directly within the host machine's kernel1. This means they start up almost instantly and use less RAM. Images are constructed from layered filesystems and share common files, making disk usage and image downloads much more efficient1. Containers are isolated from each other and the host system. They have their own filesystem and networking, and can be constrained to not allow root access outside the container1. They run on top of a host operating system1.
質問 # 52
In the CN2 architecture, which component integrates with the orchestrator to listen for changes and take action on any events affecting network resources?
- A. contrail-k8s-kubemanaqer
- B. kube-a pi server
- C. contrail-vrouter-agent
- D. cni.bin
正解：A
解説：
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.
質問 # 53
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