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Exam JN0-214 Bible | JN0-214 Certification Dumps

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Juniper JN0-214 Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

Cloud Fundamentals: This section of the exam measures the skills of Cloud Infrastructure Engineers and covers the fundamental concepts of cloud networking. Candidates must understand different deployment models such as public, private, and hybrid cloud, as well as service models such as SaaS, IaaS, and PaaS. The exam also tests knowledge of cloud-native architectures, automation tools, and infrastructure technologies, including Network Functions Virtualization (NFV) and Software-Defined Networking (SDN). One key skill assessed is identifying appropriate cloud deployment models for different business needs.

Topic 3

Network Virtualization: This section of the exam measures the skills of Cloud Network Architects and evaluates the principles of network virtualization. Candidates must understand different types of virtual networks, as well as underlay and overlay network configurations. The exam also covers encapsulation and tunneling technologies such as MPLS over GRE, VXLAN, and GENEVE. One skill assessed is the ability to differentiate between underlay and overlay networks in cloud environments.

Topic 4

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.

Topic 5

Linux Containers: This section of the exam measures the skills of Containerization Specialists and covers the concepts of Linux containers. Candidates must understand the differences between virtual machines and containers, as well as container components. The exam tests the ability to create and manage containers using Docker. One key skill assessed is deploying and managing containers efficiently.

Topic 6

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 7

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 8

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.

Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q20-Q25):

NEW QUESTION # 20
Which component of Kubernetes runs on each node maintaining network rules?

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

Answer: D

Explanation:
Kubernetes components work together to ensure seamless communication and network functionality within the cluster. Let's analyze each option:
A . container runtime
Incorrect: The container runtime (e.g., containerd, cri-o) is responsible for running containers on worker nodes. It does not maintain network rules.
B . kube-proxy
Correct: kube-proxy is a Kubernetes component that runs on each node and maintains network rules to enable communication between services and pods. It ensures proper load balancing and routing of traffic.
C . kubelet
Incorrect: The kubelet is responsible for managing the state of pods and containers on a node. It does not handle network rules.
D . kube controller
Incorrect: The kube controller manages the desired state of the cluster, such as maintaining the correct number of replicas. It does not directly manage network rules.
Why kube-proxy?
Network Rules: kube-proxy implements iptables or IPVS rules to route traffic between services and pods, ensuring seamless communication.
Load Balancing: It provides basic load balancing for services, distributing traffic across available pods.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers Kubernetes networking, including the role of kube-proxy. Understanding how kube-proxy works is essential for managing network communication in Kubernetes clusters.
For example, Juniper Contrail integrates with Kubernetes to enhance networking capabilities, leveraging kube-proxy for service-level traffic management.
Reference:
Kubernetes Documentation: kube-proxy
Juniper JNCIA-Cloud Study Guide: Kubernetes Networking

NEW QUESTION # 21
Which OpenStack service provides API client authentication?

A. Heal
B. Keystone
C. Nova
D. Neutron

Answer: B

Explanation:
OpenStack is an open-source cloud computing platform that provides various services for managing infrastructure resources. Let's analyze each option:
A . Keystone
Correct: Keystone is the OpenStack service responsible for identity management and API client authentication . It provides authentication, authorization, and service discovery for other OpenStack services.
B . Nova
Incorrect: Nova is the OpenStack compute service that manages virtual machines and bare-metal servers. It does not handle authentication or API client validation.
C . Heat
Incorrect: Heat is the OpenStack orchestration service that automates the deployment and management of infrastructure resources using templates. It does not provide authentication services.
D . Neutron
Incorrect: Neutron is the OpenStack networking service that manages virtual networks, routers, and IP addresses. It is unrelated to API client authentication.
Why Keystone?
Authentication and Authorization: Keystone ensures that only authorized users and services can access OpenStack resources by validating credentials and issuing tokens.
Service Discovery: Keystone also provides a catalog of available OpenStack services and their endpoints, enabling seamless integration between components.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenStack services, including Keystone, as part of its cloud infrastructure curriculum. Understanding Keystone's role in authentication is essential for managing secure OpenStack deployments.
For example, Juniper Contrail integrates with OpenStack Keystone to authenticate and authorize network resources, ensuring secure and efficient operation.
Reference:
OpenStack Keystone Documentation
Juniper JNCIA-Cloud Study Guide: OpenStack Services

NEW QUESTION # 22
Which technology is used to run VMs in an OpenShift cluster?

A. ESXi
B. KubeVirt
C. Hyper-V
D. OpenStack

Answer: B

Explanation:
OpenShift is a Kubernetes-based container platform that supports both containerized and virtualized workloads. Let's analyze each option:
A . ESXi
Incorrect: ESXi is VMware's hypervisor for running virtual machines. While it is widely used in traditional virtualization environments, it is not integrated into OpenShift.
B . OpenStack
Incorrect: OpenStack is an open-source cloud computing platform used for managing infrastructure resources (e.g., compute, storage, networking). It is unrelated to running VMs in an OpenShift cluster.
C . Hyper-V
Incorrect: Hyper-V is Microsoft's hypervisor for running virtual machines. Like ESXi, it is not integrated into OpenShift.
D . KubeVirt
Correct: KubeVirt is the technology used to run virtual machines in an OpenShift cluster. It extends Kubernetes to support VM workloads alongside containers, enabling hybrid workload management.
Why KubeVirt?
Integration with OpenShift: KubeVirt is specifically designed to run VMs in Kubernetes-based environments like OpenShift.
Hybrid Workload Support: It allows organizations to manage both containers and VMs using the same Kubernetes APIs and tools.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenShift and its integration with Kubernetes extensions like KubeVirt. Understanding how to run VMs in OpenShift is essential for managing hybrid workloads in cloud-native environments.
For example, Juniper Contrail integrates with OpenShift and KubeVirt to provide networking and security for hybrid workloads.
Reference:
KubeVirt Documentation
OpenShift Documentation: Virtualization
Juniper JNCIA-Cloud Study Guide: OpenShift and Kubernetes

NEW QUESTION # 23
Click the Exhibit button.

You apply the manifest file shown in the exhibit.
Which two statements are correct in this scenario? (Choose two.)

A. This manifest is used to create a deployment.
B. This manifest is used to create a deploymentConfig.
C. The created pods are receiving traffic on port 80.
D. Four pods are created as a result of applying this manifest.

Answer: A,C

Explanation:
The provided YAML manifest defines a Kubernetes Deployment object that creates and manages a set of pods running the NGINX web server. Let's analyze each statement in detail:
A . The created pods are receiving traffic on port 80.
Correct:
The containerPort: 80 field in the manifest specifies that the NGINX container listens on port 80 for incoming traffic.
While this does not expose the pods externally, it ensures that the application inside the pod (NGINX) is configured to receive traffic on port 80.
B . This manifest is used to create a deployment.
Correct:
The kind: Deployment field explicitly indicates that this manifest is used to create a Kubernetes Deployment .
Deployments are used to manage the desired state of pods, including scaling, rolling updates, and self-healing.
C . This manifest is used to create a deploymentConfig.
Incorrect:
deploymentConfig is a concept specific to OpenShift, not standard Kubernetes. In OpenShift, deploymentConfig provides additional features like triggers and lifecycle hooks, but this manifest uses the standard Kubernetes Deployment object.
D . Four pods are created as a result of applying this manifest.
Incorrect:
The replicas: 3 field in the manifest specifies that the Deployment will create three replicas of the NGINX pod. Therefore, only three pods are created, not four.
Why These Statements?
Traffic on Port 80:
The containerPort: 80 field ensures that the NGINX application inside the pod listens on port 80. This is critical for the application to function as a web server.
Deployment Object:
The kind: Deployment field confirms that this manifest creates a Kubernetes Deployment, which manages the lifecycle of the pods.
Replica Count:
The replicas: 3 field explicitly states that three pods will be created. Any assumption of four pods is incorrect.
Additional Context:
Kubernetes Deployments:
Deployments are one of the most common Kubernetes objects used to manage stateless applications. They ensure that the desired number of pod replicas is always running and can handle updates or rollbacks seamlessly.
Ports in Kubernetes:
The containerPort field in the pod specification defines the port on which the containerized application listens. However, to expose the pods externally, a Kubernetes Service (e.g., NodePort, LoadBalancer) must be created.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers Kubernetes concepts, including Deployments, Pods, and networking. Understanding how Deployments work and how ports are configured is essential for managing containerized applications in cloud environments.
For example, Juniper Contrail integrates with Kubernetes to provide advanced networking and security features for Deployments like the one described in the exhibit.
Reference:
Kubernetes Documentation: Deployments
Kubernetes Documentation: Pod Networking
Juniper JNCIA-Cloud Study Guide: Kubernetes Architecture

NEW QUESTION # 24
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.

Answer: B,D

Explanation:
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.

NEW QUESTION # 25
......

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