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JN0-213 Real Exam Question Answers Updated [Aug 07, 2024]
The JN0-213 exam covers various topics related to cloud networking, including cloud architecture, cloud networking concepts, virtualization, automation, and security. JN0-213 exam aims to test the candidates' understanding of key concepts and technologies used in cloud networking, as well as their ability to design, implement, and manage cloud-based solutions.
NEW QUESTION # 18
Which component of Kubernetes runs on all nodes and ensures that the containers are running in a pod?
- A. kube controller
- B. kube-proxy
- C. kubelel
- D. container runtime
Answer: C
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 # 19
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The myvSRX instance is currently running.
- B. The myvSRX instance is using a default image.
- C. The c using a custom flavor.
- D. The myvSRX instance is part of a default network.
Answer: A,C
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 # 20
Which two statements are true about the CN2 controller? (Choose two.)
- A. A CN2 controller communicates with CN2 vRouters using BGP.
- B. A CN2 controller communicates with CN2 vRouters using XMPP.
- C. A CN2 controller communicates with other CN2 controllers using BGP.
- D. A CN2 controller communicates with other CN2 controllers using XMPP.
Answer: B,C
Explanation:
Explanation
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.
NEW QUESTION # 21
What are two Kubernetes objects? (Choose two.)
- A. service
- B. cluster
- C. pod
- D. namespace
Answer: A,C
Explanation:
Explanation
In Kubernetes, a Pod is the smallest and simplest unit in the Kubernetes object model that you create or deploy23. A Pod represents processes running on your cluster23. A Service in Kubernetes is an abstraction which defines a logical set of Pods and a policy by which to access them23.
NEW QUESTION # 22
You want to view pods with their IP addresses in OpenShift.
Which command would you use to accomplish this task?
- A. oc get pods
- B. oc get pods -o yaml
- C. oc get all
- D. oc get pods -o wide
Answer: D
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 # 23
You are asked to run a container in a Kubernetes environment.
What should you do to accomplish this task?
- A. Create a JINJA2 template for the container and its resources.
- B. Define an XML configuration for the container and its resources.
- C. Create a WYSYG definition for the container and its resources.
- D. Define a YAML manifest for the container and its resources.
Answer: D
Explanation:
Explanation
To run a container in a Kubernetes environment, you should define a YAML manifest for the container and its resources2. YAML manifests are used to define Kubernetes objects, such as pods or services. These manifests describe the desired state of the system2.
NEW QUESTION # 24
Which two statements about overlay virtual networks are true? (Choose two.)
- A. Overlay virtual networks allow both Layer 2 and Layer 3 communication.
- B. Overlay virtual networks use Juniper proprietary protocols.
- C. Overlay virtual networks work well on an IP spine-and-leaf topology.
- D. Overlay virtual networks only allow Layer 3 communication.
Answer: A,C
Explanation:
Explanation
Overlay virtual networks are virtual logical networks constructed on top of an existing network using network virtualization technologies45. They decouple network services from the physical networking and interconnection technologies on the underlay network45. Two true statements about overlay virtual networks are:
Overlay virtual networks work well on an IP spine-and-leaf topology6. They can be created over underlay networks using network virtualization technologies4.
Overlay virtual networks allow both Layer 2 and Layer 3 communication65. They can serve not only different services (such as multiple departments) of the same tenant but also different tenants4.
References from Juniper site: Microsoft Learn, Huawei IP Encyclopedia, Network Insight
NEW QUESTION # 25
Which virtualization method requires less duplication of hardware resources?
- A. hardware-assisted virtualization
- B. paravirtualization
- C. OS-level virtualization
- D. full virtualization
Answer: C
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
Which Docker component builds, runs, and distributes Docker containers?
- A. docker registry
- B. containerd
- C. docker cli
- D. dockerd
Answer: D
Explanation:
Explanation
The Docker component that builds, runs, and distributes Docker containers is dockerd. Dockerd is the persistent process that manages containers. Docker uses different binaries for different tasks. For example, it uses the docker binary for CLI commands and dockerd for the daemon process.
NEW QUESTION # 27
What are two available installation methods for an OpenShift cluster? (Choose two.)
- A. kubeadm
- B. kubesprav
- C. installer-provisioned infrastructure
- D. user-provisioned infrastructure
Answer: C,D
Explanation:
Explanation
There are two available installation methods for an OpenShift cluster. One is the installer-provisioned infrastructure method56, and the other is the user-provisioned infrastructure method56. References from Juniper site: VMware NSX Container Plugin, OpenShift Container Platform 4.10 Documentation
NEW QUESTION # 28
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. vRouter forwarding plane
- C. Configuration Resource (CR) controllers
- D. Contrail kube-manager
Answer: A
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 # 29
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. There are no virtual machines.
- B. There are no compute nodes.
- C. There are no services.
- D. There are no projects.
Answer: A
Explanation:
Explanation
The correct answer is D. 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 access1. 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 list2. To list services, you would use the command openstack service list2. To list compute nodes, you would use the command openstack compute service list3.
NEW QUESTION # 30
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 application programming interface (API) calls.
- C. Application modules communicate through shared data structures (DB/files).
- D. Application modules communicate through interprocess communication
Answer: B
Explanation:
Explanation
In a cloud-native microservices-based architecture, the various modules of an application communicate through application programming interface (API) calls5. Each service is autonomous and self-contained and runs a unique process6. References from Juniper site: Microsoft Learn, Palo Alto Networks
NEW QUESTION # 31
What is the function that enables CN2 to manage its resources and interact with the kube-api?
- A. the data plane
- B. the control plane
- C. the management 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 # 32
What is the most privileged protection ring?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
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 # 33
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. Overlay networks are virtual networks.
- C. Underlay fabrics decouple network services from the overlay infrastructure.
- D. Underlay fabrics enable multitenancy through virtualization.
Answer: B
Explanation:
Explanation
Overlay networks are indeed virtual networks. They are logical constructs that stitch together disparate, dispersed network infrastructure, often referred to as underlay1. Underlay networks refer to the physical network infrastructure, while overlay networks implement network virtualization concepts2. References from Juniper site: Baeldung on Computer Science, PacketFabric, Cisco, HPE Aruba Networking
NEW QUESTION # 34
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The JN0-213 exam covers a wide range of cloud networking topics, including cloud architecture, infrastructure, virtualization, network services, automation, and security. JN0-213 exam consists of 65 multiple-choice questions that must be completed within 90 minutes. To pass the exam, candidates must achieve a score of at least 65%.
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