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Reliable JN0-214 Test Question - JN0-214 Valid Test Sample

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Juniper JN0-214 Exam Syllabus Topics:

Topic
Details

Topic 1

Software-Defined Networking: This section of the exam measures the skills of Network Automation Engineers and focuses on SDN concepts, including its architecture, controllers, and solutions. Candidates must understand how SDN separates the control plane from the data plane to improve network agility and automation. The exam also evaluates knowledge of SDN’s role in modern cloud environments. One key skill assessed is identifying SDN components and their functions.

Topic 2

Cloud Virtualization: This section of the exam measures the skills of Linux System Administrators and covers Linux-based virtualization technologies. Candidates must understand Linux architecture, hypervisors (Type 1 & 2), and KVM
QEMU operations. The exam also includes creating virtual machines and managing Linux virtualization environments. One skill assessed is setting up and managing Linux-based virtual machines effectively.

Topic 3

Cloud Orchestration with Kubernetes: This section of the exam measures the skills of Kubernetes Administrators and tests their knowledge of container orchestration. Candidates must demonstrate proficiency in creating and managing Kubernetes containers, working with API objects such as Pods, ReplicaSets, Deployments, and Services, and configuring namespaces and CNI plugins. One key skill assessed is deploying and scaling Kubernetes applications effectively.

Topic 4

Cloud Orchestration with OpenShift: This section of the exam measures the skills of DevOps Engineers and focuses on OpenShift-based orchestration. Candidates must understand how to create, manage, and monitor workloads using OpenShift, as well as navigate the OpenShift CLI and WebUI. The exam also tests knowledge of node types and different network configurations. One skill assessed is managing OpenShift workloads in a production environment.

Topic 5

Network Functions Virtualization: This section of the exam measures the skills of Virtualization Specialists and covers the core principles of NFV. Candidates will be tested on NFV architecture, orchestration, and Virtual Network Functions (VNFs), which are crucial for creating scalable and flexible network infrastructures. Understanding NFV helps optimize network performance and reduce dependency on hardware-based solutions. One skill assessed is the ability to explain NFV’s role in modern network management.

Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q64-Q69):

NEW QUESTION # 64
Which two statements about overlay virtual networks are true? (Choose two.)

A. Overlay virtual networks use Juniper proprietary protocols.
B. Overlay virtual networks allow both Layer 2 and Layer 3 communication.
C. Overlay virtual networks only allow Layer 3 communication.
D. Overlay virtual networks work well on an IP spine-and-leaf topology.

Answer: B,D

Explanation:
Overlay virtual networks are virtual logical networks constructed on top of an existing network using network virtualization technologies. They decouple network services from the physical networking and interconnection technologies on the underlay network. Two true statements about overlay virtual networks are:
Overlay virtual networks work well on an IP spine-and-leaf topology. They can be created over underlay networks using network virtualization technologies.
Overlay virtual networks allow both Layer 2 and Layer 3 communication. They can serve not only different services (such as multiple departments) of the same tenant but also different tenants.

NEW QUESTION # 65
Which virtualization method requires less duplication of hardware resources?

A. OS-level virtualization
B. paravirtualization
C. full virtualization
D. hardware-assisted virtualization

Answer: A

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 # 66
Which method is used to extend virtual networks between physical locations?

A. encapsulations
B. encryption
C. load-balancing
D. clustering

Answer: A

Explanation:
To extend virtual networks between physical locations, a mechanism is needed to transport network traffic across different sites while maintaining isolation and connectivity. Let's analyze each option:
A . encapsulations
Correct: Encapsulation is the process of wrapping network packets in additional headers to create tunnels. Protocols like VXLAN, GRE, and MPLS are commonly used to extend virtual networks between physical locations by encapsulating traffic and transporting it over the underlay network.
B . encryption
Incorrect: Encryption secures data during transmission but does not inherently extend virtual networks. While encryption can be used alongside encapsulation for secure communication, it is not the primary method for extending networks.
C . clustering
Incorrect: Clustering refers to grouping multiple servers or devices to work together as a single system. It is unrelated to extending virtual networks between physical locations.
D . load-balancing
Incorrect: Load balancing distributes traffic across multiple servers or paths to optimize performance. While important for scalability, it does not extend virtual networks.
Why Encapsulation?
Tunneling Mechanism: Encapsulation protocols like VXLAN and GRE create overlay networks that span multiple physical locations, enabling seamless communication between virtual networks.
Isolation and Scalability: Encapsulation ensures that virtual networks remain isolated and scalable, even when extended across geographically dispersed sites.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers overlay networking and encapsulation as part of its curriculum on cloud architectures. Understanding how encapsulation works is essential for designing and managing distributed virtual networks.
For example, Juniper Contrail uses encapsulation protocols like VXLAN to extend virtual networks across data centers, ensuring consistent connectivity and isolation.
Reference:
VXLAN RFC 7348
GRE Tunneling Documentation
Juniper JNCIA-Cloud Study Guide: Overlay Networking

NEW QUESTION # 67
Which component of Kubernetes runs on all nodes and ensures that the containers are running in a pod?

A. container runtime
B. kubelel
C. kube controller
D. kube-proxy

Answer: B

Explanation:
The kubelet is a component of Kubernetes that runs on all nodes in the cluster and ensures that containers are running in a pod. 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 # 68
Regarding the third-party CNI in OpenShift, which statement is correct?

A. In OpenShift, you can have multiple third-party CNIs installed simultaneously.
B. In OpenShift, you can remove and install a third-party CNI after the cluster has been deployed.
C. In OpenShift, you must specify the third-party CNI to be installed during the initial cluster deployment.
D. OpenShift does not support third-party CNIs.

Answer: C

Explanation:
OpenShift supports third-party Container Network Interfaces (CNIs) to provide advanced networking capabilities. However, there are specific requirements and limitations when using third-party CNIs. Let's analyze each statement:
A . In OpenShift, you can remove and install a third-party CNI after the cluster has been deployed.
Incorrect:
OpenShift does not allow you to change or replace the CNI plugin after the cluster has been deployed. The CNI plugin must be specified during the initial deployment.
B . In OpenShift, you must specify the third-party CNI to be installed during the initial cluster deployment.
Correct:
OpenShift requires you to select and configure the desired CNI plugin (e.g., Calico, Cilium) during the initial cluster deployment. Once the cluster is deployed, changing the CNI plugin is not supported.
C . OpenShift does not support third-party CNIs.
Incorrect:
OpenShift supports third-party CNIs as alternatives to the default SDN (Software-Defined Networking) solution. This flexibility allows users to choose the best networking solution for their environment.
D . In OpenShift, you can have multiple third-party CNIs installed simultaneously.
Incorrect:
OpenShift does not support running multiple CNIs simultaneously. Only one CNI plugin can be active at a time, whether it is the default SDN or a third-party CNI.
Why This Statement?
Initial Configuration Requirement: OpenShift enforces the selection of a CNI plugin during the initial deployment to ensure consistent and stable networking across the cluster.
Stability and Compatibility: Changing the CNI plugin after deployment could lead to network inconsistencies and compatibility issues, which is why it is not allowed.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenShift networking, including the use of third-party CNIs. Understanding the limitations and requirements for CNI plugins is essential for deploying and managing OpenShift clusters effectively.
For example, Juniper Contrail can be integrated as a third-party CNI in OpenShift to provide advanced networking and security features, but it must be specified during the initial deployment.
Reference:
OpenShift Documentation: Third-Party CNIs
Juniper JNCIA-Cloud Study Guide: OpenShift Networking

NEW QUESTION # 69
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