無料で使えるJN0-214サンプル問題で100%カバー率のリアル試験問題（更新された67問あります)
今すぐダウンロード！リアルJuniper JN0-214試験問題集テストエンジン試験問題
質問 # 27
Which two statements are correct about Kubernetes resources? (Choose two.)
- A. A ClusterIP type service can only be accessed within a Kubernetes cluster.
- 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 deploymentConfig is a Kubernetes resource.
正解：A、B
解説：
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.
質問 # 28
You want to quickly assign a specific combination of permissions to a set of users.
In this scenario, which OpenStack object should you create?
- A. project
- B. role
- C. flavor
- D. image
正解：B
解説：
In OpenStack, a role is a set of permissions that determines what actions users can perform in a given context. Roles are assigned to user-project pairs. If you want to quickly assign a specific combination of permissions to a set of users, you should create a role.
質問 # 29
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 # 30
Which two statements are correct about an overlay network? (Choose two.)
- A. The overlay network provides physical connectivity between devices.
- B. The overlay network is the virtual network used to connect multiple virtual machines (VMs).
- C. The overlay network can only be built using a Layer 3 underlay network.
- D. The overlay network is built using encapsulation tunnels.
正解：B、D
解説：
An overlay network is a virtual network that is built on top of another network. Nodes in the overlay network are connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network. For example, distributed systems such as peer-to-peer networks and client-server applications often overlay their own network connections over the physical network connections provided by the Internet.
質問 # 31
Which cloud automation tool uses YAML playbooks to install software and tools on servers?
- A. Ansible
- B. Python
- C. Heat
- D. Terraform
正解：A
解説：
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.
質問 # 32
What are two characteristics of the OpenShift Assisted Installer? (Choose two.)
- A. It offers REST APIs for the configuration and installation
- B. It uses one of the control plane nodes as a bootstrap node.
- C. It does not support bare-metal deployments.
- D. It provides full feature support and customizations.
正解：A、B
解説：
The OpenShift Assisted Installer uses one of the control plane nodes as a bootstrap node. It also offers REST APIs for the configuration and installation.
質問 # 33
In OpenShift, which node type is used to host your application containers?
- A. worker node
- B. full node
- C. miner node
- D. control plane node
正解：A
解説：
In OpenShift, the worker node is used to host your application containers. Worker nodes are where all your coding adventures happen, and they can be virtual or physical.
質問 # 34
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 # 35
Which statement is correct about overlay or underlay networks or fabrics?
- A. Overlay networks are Layer 3 networks that must use OSPF for routing purposes.
- B. Underlay fabrics enable multitenancy through virtualization.
- C. Underlay fabrics decouple network services from the overlay infrastructure.
- D. Overlay networks are virtual networks.
正解：D
解説：
Overlay networks are indeed virtual networks. They are logical constructs that stitch together disparate, dispersed network infrastructure, often referred to as underlay. Underlay networks refer to the physical network infrastructure, while overlay networks implement network virtualization concepts.
質問 # 36
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 # 37
Which two statements are correct about containers? (Choose two.)
- A. Containers include the entire operating system.
- B. Containers reduce deployment efficiency.
- C. Containers require an underlying operating system.
- D. Containers have faster boot times than VMs. www*
正解：C、D
解説：
Containers are lightweight because they don't need the extra load of a hypervisor, but run directly within the host machine's kernel. 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 efficient. 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 container. They run on top of a host operating system.
質問 # 38
Your e-commerce application is deployed on a public cloud. As compared to the rest of the year, it receives substantial traffic during the Christmas season.
In this scenario, which cloud computing feature automatically increases or decreases the resources based on the demand?
- A. rapid elasticity
- B. on-demand self-service
- C. broad network access
- D. resource pooling
正解：A
解説：
The cloud computing feature that automatically increases or decreases the resources based on the demand is known as rapid elasticity. In cloud computing, scaling is the process of adding or removing compute, storage, and network services to meet the demands a workload makes for resources in order to maintain availability and performance as utilization increases.
質問 # 39
Which two statements are true about VRF instances? (Choose two.)
- A. VRFs do not enable overlapping IP addresses within the same cloud network.
- B. VRFs enable overlapping IP addresses within the same cloud network.
- C. Each VRF has its own routing table.
- D. VRFs share a single routing table.
正解：B、C
解説：
Virtual Routing and Forwarding (VRF) is a technology that allows multiple instances of a routing table to coexist within the same router at the same time. Because the routing instances are independent, overlapping IP addresses can be used without conflict. Each VRF has its own routing table.
質問 # 40
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-vrouter-agent
- B. contrail-k8s-kubemanaqer
- C. cni.bin
- D. kube-a pi server
正解：B
解説：
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 # 41
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 # 42
What are two reasons to create a Kubernetes deployment rather than work with pods directly?
(Choose two.)
- A. A deployment ensures that the desired number of pods is running at all times.
- B. A deployment contains imperative instructions on how to re-create a pod if a pod dies unexpectedly.
- C. A deployment simplifies pod updates and roll-outs.
- D. A deployment is ephemeral and therefore requires less configuration.
正解：A、C
解説：
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 updated. 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 times. If a pod crashes, the Deployment will automatically re-create it.
A deployment simplifies pod updates and roll-outs. 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 rate.
質問 # 43
Which virtualization technique is used by containers?
- A. paravirtualization
- B. full visualization
- C. OS-level virtualization
- D. hardware-assisted virtualization
正解：C
解説：
This technique allows multiple isolated user-space instances to be created by the host operating system. Unlike full virtualization, where the entire system's hardware is emulated, OS-level virtualization shares the host's operating system kernel but isolates the application processes.
質問 # 44
What are the two characteristics of the Network Functions Virtualization (NFV) framework?
(Choose two.)
- A. It implements virtualized network functions
- B. It implements virtualized tunnel endpoints.
- C. It decouples the network software from the hardware.
- D. It decouples the network control plane from the forwarding plane.
正解：A、C
解説：
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.
質問 # 45
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. There are no compute nodes.
- B. There are no projects.
- C. There are no virtual machines.
- D. There are no services.
正解：C
解説：
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.
質問 # 46
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