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Juniper JN0-214 Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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 4

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 5

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 6

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.

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Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q21-Q26):

NEW QUESTION # 21
When considering OpenShift and Kubernetes, what are two unique resources of OpenShift? (Choose two.)

A. build
B. services
C. routes
D. ingress

Answer: A,C

Explanation:
OpenShift extends Kubernetes by introducing additional resources and abstractions to simplify application development and deployment. Let's analyze each option:
A . routes
Correct:
Routes are unique to OpenShift and provide a way to expose services externally by mapping a hostname to a service. They are built on top of Kubernetes Ingress but offer additional features like TLS termination and wildcard support.
B . build
Correct:
Builds are unique to OpenShift and represent the process of transforming source code into container images. OpenShift provides build configurations and strategies (e.g., Docker, S2I) to automate this process, which is not natively available in Kubernetes.
C . ingress
Incorrect:
Ingress is a standard Kubernetes resource used to manage external access to services. While OpenShift uses Ingress as the foundation for its Routes, Ingress itself is not unique to OpenShift.
D . services
Incorrect:
Services are a core Kubernetes resource used to expose applications internally within the cluster. They are not unique to OpenShift.
Why These Resources?
Routes: Extend Kubernetes Ingress to provide advanced external access capabilities, such as custom domain mappings and TLS termination.
Builds: Simplify the process of building container images directly within the OpenShift platform, enabling streamlined CI/CD workflows.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenShift's unique resources as part of its curriculum on container orchestration platforms. Understanding the differences between OpenShift and Kubernetes resources is essential for leveraging OpenShift's full capabilities.
For example, Juniper Contrail integrates with OpenShift to provide advanced networking features, ensuring secure and efficient traffic routing for Routes and Builds.
Reference:
OpenShift Documentation: Routes and Builds
Juniper JNCIA-Cloud Study Guide: OpenShift vs. Kubernetes

NEW QUESTION # 22
Which Kubernetes component guarantees the availability of ReplicaSet pods on one or more nodes?

A. kube-scheduler
B. kube controller
C. kubelet
D. kube-proxy

Answer: B

Explanation:
Kubernetes components work together to ensure the availability and proper functioning of resources like ReplicaSets. Let's analyze each option:
A . kube-proxy
Incorrect: The kube-proxy manages network communication for services and pods by implementing load balancing and routing rules. It does not guarantee the availability of ReplicaSet pods.
B . kube-scheduler
Incorrect: The kube-scheduler is responsible for assigning pods to nodes based on resource availability and other constraints. While it plays a role in pod placement, it does not ensure the availability of ReplicaSet pods.
C . kube controller
Correct: The kube controller (specifically the ReplicaSet controller) ensures that the desired number of pods specified in a ReplicaSet are running at all times. If a pod crashes or is deleted, the controller creates a new one to maintain the desired state.
D . kubelet
Incorrect: The kubelet ensures that containers are running as expected on a node but does not manage the overall availability of ReplicaSet pods across the cluster.
Why Kube Controller?
ReplicaSet Management: The ReplicaSet controller within the kube controller manager ensures that the specified number of pod replicas are always available.
Self-Healing: If a pod fails or is deleted, the controller automatically creates a new pod to maintain the desired state.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers Kubernetes control plane components, including the kube controller. Understanding the role of the kube controller is essential for managing the availability and scalability of Kubernetes resources.
For example, Juniper Contrail integrates with Kubernetes to provide advanced networking and security features, relying on the kube controller to maintain the desired state of ReplicaSets.
Reference:
Kubernetes Documentation: ReplicaSet Controller
Juniper JNCIA-Cloud Study Guide: Kubernetes Control Plane

NEW QUESTION # 23
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 qet all
C. oc get pods
D. oc qet pods -o vaml

Answer: A

Explanation:
OpenShift provides various commands to view and manage pods. Let's analyze each option:
A . oc qet pods -o vaml
Incorrect:
The command contains a typo (qet instead of get) and an invalid output format (vaml). The correct format would be yaml, but this command does not display pod IP addresses.
B . oc get pods -o wide
Correct:
The oc get pods -o wide command displays detailed information about pods, including their names, statuses, and IP addresses . The -o wide flag extends the output to include additional details like pod IPs and node assignments.
C . oc qet all
Incorrect:
The command contains a typo (qet instead of get). Even if corrected, oc get all lists all resources (e.g., pods, services, deployments) but does not display pod IP addresses.
D . oc get pods
Incorrect:
The oc get pods command lists pods with basic information such as name, status, and restart count. It does not include pod IP addresses unless the -o wide flag is used.
Why oc get pods -o wide?
Detailed Output: The -o wide flag provides extended information, including pod IP addresses, which is essential for troubleshooting and network configuration.
Ease of Use: This command is simple and effective for viewing pod details in OpenShift.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding OpenShift CLI commands and their outputs. Knowing how to retrieve detailed pod information is essential for managing and troubleshooting OpenShift environments.
For example, Juniper Contrail integrates with OpenShift to provide advanced networking features, relying on accurate pod IP information for traffic routing and segmentation.
Reference:
OpenShift CLI Documentation: oc get pods Command
Juniper JNCIA-Cloud Study Guide: OpenShift Networking

NEW QUESTION # 24
Which two statements are true about VRF instances? (Choose two.)

A. Each VRF has its own routing table.
B. VRFs do not enable overlapping IP addresses within the same cloud network.
C. VRFs share a single routing table.
D. VRFs enable overlapping IP addresses within the same cloud network.

Answer: A,D

Explanation:
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.

NEW QUESTION # 25
Which two statements are true about the CN2 controller? (Choose two.)

A. A CN2 controller communicates with CN2 vRouters using XMPP.
B. A CN2 controller communicates with other CN2 controllers using BGP.
C. A CN2 controller communicates with other CN2 controllers using XMPP.
D. A CN2 controller communicates with CN2 vRouters using BGP.

Answer: A,B

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 # 26
......

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