Latest JN0-213 Actual Free Exam Questions Updated 67 Questions
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Juniper JN0-213: Cloud, Associate (JNCIA-Cloud) exam is an essential certification for professionals who work with cloud networking technologies. It demonstrates an individual's knowledge and skills in designing and implementing cloud networking solutions, which can help them advance their careers and increase their earning potential. With the right preparation and resources, candidates can pass the exam and become certified in JNCIA-Cloud.
NEW QUESTION # 11
You are provisioning workloads on worker nodes in a Kubernetes cluster.
Which CN2 component is responsible for generating associated routes?
- A. Contrail kube-manager
- B. vRouter agent microservice
- C. vRouter forwarding plane
- D. Configuration Resource (CR) controllers
Answer: B
Explanation:
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 # 12
What are the two primary ways used to manage objects by kubectl? (Choose two.)
- A. declarative object configuration
- B. imperative object commands
- C. imperative commands
- D. declarative commands
Answer: A,C
Explanation:
Explanation
The two primary ways used to manage objects by kubectl are imperative commands and declarative object configuration10. Imperative commands operate directly on live objects in a cluster. The user provides operations to the kubectl command as arguments or flags10. Declarative object configuration specifies the operation (create, replace, etc.), optional flags and at least one file name. The file specified must contain a full definition of the object in YAML or JSON format10.
NEW QUESTION # 13
What are two characteristics of the OpenShift Assisted Installer? (Choose two.)
- A. It provides full feature support and customizations.
- B. It does not support bare-metal deployments.
- C. It uses one of the control plane nodes as a bootstrap node.
- D. It offers REST APIs for the configuration and installation
Answer: C,D
Explanation:
Explanation
The OpenShift Assisted Installer uses one of the control plane nodes as a bootstrap node12. It also offers REST APIs for the configuration and installation12.
NEW QUESTION # 14
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 explains how VNFs fits into the whole solution.
- C. The NFV framework is defined by the W3C.
- D. The NFV infrastructure (NFVI) is a component of NFV.
Answer: B,D
Explanation:
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
NEW QUESTION # 15
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
Answer: B
Explanation:
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 # 16
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:
Explanation
The kubelet is a component of Kubernetes that runs on all nodes in the cluster and ensures that containers are running in a pod910. 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 # 17
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The myvSRX instance is part of a default network.
- B. The c using a custom flavor.
- C. The myvSRX instance is using a default image.
- D. The myvSRX instance is currently running.
Answer: B,D
Explanation:
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.
NEW QUESTION # 18
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. ClusterIP
- D. NodePort
Answer: A
Explanation:
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
NEW QUESTION # 19
What is the most privileged protection ring?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Explanation
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 hardware12. References from Juniper site: Wikipedia, GeeksforGeeks, Notes
NEW QUESTION # 20
Which two statements are correct about OpenStack networks? (Choose two.)
- A. It is possible to share networks with other projects in an OpenStack network.
- B. It is not possible to add host routes in the DHCP settings in an OpenStack network.
- C. It is possible to enable DHCP for a subnet in an OpenStack network.
- D. It is not possible to specify a subnet address in an OpenStack network.
Answer: A,C
Explanation:
Explanation
In OpenStack networks, it is possible to share networks with other projects7. Also, it is possible to enable DHCP for a subnet in an OpenStack network7. References from Juniper site: OpenStack Documentation
NEW QUESTION # 21
Which two statements are true about virtual networks? (Choose two.)
- A. Virtual networks are able to span multiple devices.
- B. Virtual networks are limited to a single device.
- C. Virtual networks are available on common Linux distributions.
- D. Virtual networks are available only as part of a cloud orchestration system.
Answer: A,C
Explanation:
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 # 22
What is the function that enables CN2 to manage its resources and interact with the kube-api?
- A. the data plane
- B. the management plane
- C. the control plane
- D. the configuration plane
Answer: D
Explanation:
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 virtualization technique is used by containers?
- A. paravirtualization
- B. OS-level virtualization
- C. full visualization
- D. hardware-assisted virtualization
Answer: B
Explanation:
Explanation
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 processes12.
NEW QUESTION # 24
Which statement is correct about a vRouter?
- A. A vRouter can only provide connections to a single tenant's VM.
- B. A vRouter always provides a direct connection between a tenant VM and the underlay network.
- 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.
Answer: D
Explanation:
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
NEW QUESTION # 25
Which virtualization method requires less duplication of hardware resources?
- A. paravirtualization
- B. OS-level virtualization
- C. hardware-assisted virtualization
- D. full virtualization
Answer: B
Explanation:
Explanation
OS-level virtualization requires less duplication of hardware resources. This method allows multiple instances of an operating system or multiple different operating systems to run on a single physical server, sharing the same hardware resources. This results in more efficient use of hardware resources compared to other virtualization methods such as full virtualization or paravirtualization
NEW QUESTION # 26
You want to view pods with their IP addresses in OpenShift.
Which command would you use to accomplish this task?
- A. oc get pods -o wide
- B. oc get all
- C. oc get pods
- D. oc get pods -o yaml
Answer: A
Explanation:
Explanation
To view pods with their IP addresses in OpenShift, you would use the command oc get pods -o wide23. This command provides additional information such as the IP address and the node where the pod is located23.
References from Juniper site: OpenShift Documentation, Stack Overflow
NEW QUESTION # 27
You are deploying CN2 using Kubernetes as your orchestrator.
In this scenario, which component contains the vRouter agent?
- A. kube-manager
- B. Contrail controller
- C. Ikube-scheduler
- D. worker node
Answer: D
Explanation:
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 # 28
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 run command starts a new copy of the container, not the existing version.
- B. The docker exec command needs to be run first to save and exit the running container.
- C. Docker images need to be recompiled to make any changes.
- D. The docker load command must be used to persist the change.
Answer: A
Explanation:
Explanation
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[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]. References from Juniper site: Stack Overflow, Docker Docs
NEW QUESTION # 29
Which term identifies to which network a virtual machine interface is connected?
- A. machine access control (MAC)
- B. virtual tunnel endpoint (VTEP)
- C. virtual network ID (VNID)
- D. Virtual Extensible LAN (VXLAN)
Answer: C
Explanation:
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 # 30
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