[2024年12月09日]JN0-214試験問題集でリアル試験と100%同じ問題と解答
JN0-214テストエンジン問題集トレーニングには67問あります
質問 # 27
You must provide tunneling in the overlay that supports multipath capabilities.
Which two protocols provide this function? (Choose two.)
- A. MPLSoGRE
- B. VPN
- C. VXLAN
- D. MPLSoUDP
正解：C、D
解説：
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.
質問 # 28
You are asked to run a container in a Kubernetes environment.
What should you do to accomplish this task?
- A. Create a WYSYG definition for the container and its resources.
- B. Define a YAML manifest for the container and its resources.
- C. Define an XML configuration for the container and its resources.
- D. Create a JINJA2 template for the container and its resources.
正解：B
解説：
To run a container in a Kubernetes environment, you should define a YAML manifest for the container and its resources. YAML manifests are used to define Kubernetes objects, such as pods or services. These manifests describe the desired state of the system.
質問 # 29
Which SDN model provisions tunnels between the virtual endpoints within and across data centers?
- A. SDN overlay
- B. switch-based SDN
- C. open SDN
- D. SDN by APIs
正解：A
解説：
The SDN overlay model provisions tunnels between the virtual endpoints within and across data centers. This model uses network overlays to support private communication between instances.
質問 # 30
Which two statements are correct about OpenShift monitoring? (Choose two.)
- A. OpenShifis not able to configure customized alerts.
- B. OpenShifhas its own monitoring framework.
- C. OpenShifis able to configure customized alerts.
- D. OpenShifmonitoring is not compatible with Grafana.
正解：B、C
解説：
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).
質問 # 31
What is the most privileged protection ring?
- A. 0
- B. 1
- C. 2
- D. 3
正解：C
解説：
In computer science, hierarchical protection domains, often called protection rings, are mechanisms to protect data and functionality from faults and malicious behavior. Rings are arranged in a hierarchy from most privileged (most trusted, usually numbered zero) to least privileged (least trusted, usually with the highest ring number). On most operating systems, Ring
0 is the level with the most privileges and interacts most directly with the physical hardware.
質問 # 32
Which two statements are correct about Network Functions Virtualization (NFV)? (Choose two.)
- A. The NFV framework explains how VNFs fits into the whole solution.
- B. The NFV framework is defined by the W3C.
- C. The NFV infrastructure (NFVI) is a component of NFV.
- D. The NFV infrastructure (NFVI) is not a component of NFV.
正解：A、C
解説：
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 services. The NFV framework explains how Virtual Network Functions (VNFs) fit into the whole solution. The NFV Infrastructure (NFVI) is a component of NFV that consists of the infrastructure components --compute, storage, networking-- on a platform to support software.
質問 # 33
Which two functions does CN2 provide? (Choose two.)
- A. It performs SDN functions in an NFV solution.
- B. It provides an orchestration solution for VMs and containers.
- C. It provides underlay network management capabilities.
- D. It provides enhanced networking capabilities to private clouds.
正解：B、D
解説：
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 brain. Two functions that CN2 provides are:
It provides enhanced networking capabilities to private clouds. It transmits special afferent impulses of light to the brain and is involved in several reflex arcs related to the ocular system.
It provides an orchestration solution for VMs and containers. It is a unique structure that functions as the bridge between the retinal layer of the eyes and the visual cortex of the brain.
質問 # 34
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 that is exposed to clients that are internal to the cluster.
- D. It is the port on which the webapp pod is listening.
正解：C
解説：
In the context of a Kubernetes service, port: 8080 represents the port that is exposed to clients that are internal to the cluster. This is the stable port the Service exposes inside the cluster -- other Pods in the cluster send traffic to this port.
質問 # 35
Which two statements are correct about OpenStack networks? (Choose two.)
- A. It is possible to enable DHCP for a subnet in an OpenStack network.
- B. It is possible to share networks with other projects in an OpenStack network.
- C. It is not possible to add host routes in the DHCP settings in an OpenStack network.
- D. It is not possible to specify a subnet address in an OpenStack network.
正解：A、B
解説：
In OpenStack networks, it is possible to share networks with other projects. Also, it is possible to enable DHCP for a subnet in an OpenStack network.
質問 # 36
Which statement is correct about a vRouter?
- A. A vRouter always provides a direct connection between a tenant VM and the underlay network.
- B. A vRouter can only provide connections to a single tenant's VM.
- C. A vRouter uses logical systems to create individual routing tables for each tenant.
- D. A vRouter uses virtual routing and forwarding (VRF) instances to create individual routing tables for each tenant.
正解：D
解説：
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 # 37
Which term identifies to which network a virtual machine interface is connected?
- A. virtual tunnel endpoint (VTEP)
- B. machine access control (MAC)
- C. Virtual Extensible LAN (VXLAN)
- D. virtual network ID (VNID)
正解：D
解説：
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.
質問 # 38
Which two tools are used to deploy a Kubernetes environment for testing and development purposes? (Choose two.)
- A. kind
- B. minikube
- C. oc
- D. OpenStack
正解：A、B
解説：
Minikube and kind are two tools that are commonly used to deploy a Kubernetes environment for testing and development purposes.
質問 # 39
Which component of an SDN architecture is responsible for configuring and maintaining devices and their state?
- A. the operational plane
- B. the management plane
- C. the data plane
- D. the forwarding plane
正解：B
解説：
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.
質問 # 40
The Kubernetes object definition file is in which format?
- A. YAML
- B. HTML
- C. TXT
- D. IXML
正解：A
解説：
The Kubernetes object definition file is in YAML format. Kubernetes objects are represented in the Kubernetes API, and you can express them in .yaml format. You can execute kubectl get deployment <deployment-name> -o yaml to get the deployment definition in a yaml format.
質問 # 41
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. ADOT
- B. Canal
- C. KubeVirt
- D. Romana
正解：C
解説：
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.
質問 # 42
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. Glance
- B. Neutron
- C. Nova
- D. Ironic
正解：A
解説：
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.
質問 # 43
You have started a container in Docker, made configuration changes to it, and stopped the container. You notice the next time that you execute the docker run command, the changes have not persisted.
What is the problem?
- A. The docker load command must be used to persist the change.
- B. The docker run command starts a new copy of the container, not the existing version.
- C. The docker exec command needs to be run first to save and exit the running container.
- D. Docker images need to be recompiled to make any changes.
正解：B
解説：
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 execute docker run, it starts a new instance of the container, not an existing version with its changes. 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.
質問 # 44
Your business has optimized its applications to leverage a cloud-native microservices-based architecture.
In this architecture, how do the various modules of an application communicate?
- A. Application modules communicate through remote direct memory access
- B. Application modules communicate through interprocess communication
- C. Application modules communicate through application programming interface (API) calls.
- D. Application modules communicate through shared data structures (DB/files).
正解：C
解説：
In a cloud-native microservices-based architecture, the various modules of an application communicate through application programming interface (API) calls. Each service is autonomous and self-contained and runs a unique process.
質問 # 45
Which two statements are true about the CN2 controller? (Choose two.)
- A. A CN2 controller communicates with other CN2 controllers using XMPP.
- B. A CN2 controller communicates with CN2 vRouters using XMPP.
- C. A CN2 controller communicates with CN2 vRouters using BGP.
- D. A CN2 controller communicates with other CN2 controllers using BGP.
正解：B、D
解説：
A CN2 controller communicates with CN2 vRouters using XMPP (Extensible Messaging and Presence Protocol) and with other CN2 controllers using BGP (Border Gateway Protocol). XMPP is used for control plane communication, while BGP is used for routing updates between controllers.
質問 # 46
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The myvSRX instance is using a default image.
- B. The myvSRX instance is part of a default network.
- C. The myvSRX instance is currently running.
- D. The c using a custom flavor.
正解：C、D
解説：
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 # 47
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. LoadBalancer
- B. ExternalName
- C. NodePort
- D. ClusterIP
正解：A
解説：
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.
質問 # 48
The openstack user list command uses which OpenStack service?
- A. Cinder
- B. Neutron
- C. Nova
- D. Keystone
正解：D
解説：
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 # 49
Which CN2 component provides the network control plane capability?
- A. contrail-k8s-controller
- B. contrail-k8s-kubemanaqer
- C. contrail-control
- D. contrail-vrouter-nodes
正解：C
解説：
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 nodes.
質問 # 50
What are two Kubernetes objects? (Choose two.)
- A. pod
- B. cluster
- C. namespace
- D. service
正解：A、D
解説：
In Kubernetes, a Pod is the smallest and simplest unit in the Kubernetes object model that you create or deploy. A Pod represents processes running on your cluster. A Service in Kubernetes is an abstraction which defines a logical set of Pods and a policy by which to access them.
質問 # 51
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：
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.
質問 # 52
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