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Juniper JN0-214 Exam Syllabus Topics:

Topic
Details

Topic 1

Cloud Orchestration with OpenStack: This section of the exam measures the skills of Cloud Operations Engineers and evaluates expertise in OpenStack-based orchestration. Candidates must understand how to create and manage virtual machines in OpenStack, use HEAT templates for automation, and navigate OpenStack interfaces. The exam also covers OpenStack networking plugins and security groups. One skill assessed is automating cloud deployments using HEAT templates.

Topic 2

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 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

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 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.

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Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q11-Q16):

NEW QUESTION # 11
Which term identifies to which network a virtual machine interface is connected?

A. Virtual Extensible LAN
B. machine access control (MAC)
C. virtual network ID
D. virtual tunnel endpoint (VTEP)

Answer: C

Explanation:
In cloud environments, virtual machines (VMs) connect to virtual networks to enable communication. Identifying the network to which a VM interface is connected is essential for proper configuration and isolation. Let's analyze each option:
A . virtual network ID
Correct: The virtual network ID uniquely identifies the virtual network to which a VM interface is connected. This ID is used to logically group VMs and ensure they can communicate within the same network while maintaining isolation from other networks.
B . machine access control (MAC)
Incorrect: The MAC address is a hardware identifier for a network interface card (NIC). While it is unique to each interface, it does not identify the network to which the VM is connected.
C . Virtual Extensible LAN (VXLAN)
Incorrect: VXLAN is a tunneling protocol used to create overlay networks in cloud environments. While VXLAN encapsulates traffic, it does not directly identify the network to which a VM interface is connected.
D . virtual tunnel endpoint (VTEP)
Incorrect: A VTEP is a component of overlay networks (e.g., VXLAN) that encapsulates and decapsulates traffic. It is used to establish tunnels but does not identify the virtual network itself.
Why Virtual Network ID?
Logical Isolation: The virtual network ID ensures that VMs are logically grouped into isolated networks, enabling secure and efficient communication.
Scalability: Virtual networks allow cloud environments to scale by supporting multiple isolated networks within the same infrastructure.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding virtual networking concepts, including virtual networks and their identifiers. Virtual network IDs are fundamental to cloud architectures, enabling multi-tenancy and network segmentation.
For example, Juniper Contrail uses virtual network IDs to manage connectivity and isolation for VMs in cloud environments. Proper configuration of virtual networks ensures seamless communication and security.
Reference:
Virtual Networking Documentation
Juniper JNCIA-Cloud Study Guide: Virtual Networks

NEW QUESTION # 12
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. NodePort
C. ClusterIP
D. ExternalName

Answer: A

Explanation:
The LoadBalancer service type in Kubernetes exposes the service externally using a cloud provider's load balancer. NodePort and ClusterIP services, to which the external load balancer routes, are automatically created.

NEW QUESTION # 13
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 deploymentConfig.
B. This manifest is used to create a deployment.
C. The created pods are receiving traffic on port 80.
D. Four pods are created as a result of applying this manifest.

Answer: B,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 # 14
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 wide
C. oc get all
D. oc get pods -o yaml

Answer: B

Explanation:
To view pods with their IP addresses in OpenShift, you would use the command oc get pods -o wide. This command provides additional information such as the IP address and the node where the pod is located.

NEW QUESTION # 15
Which two statements are correct about Kubernetes resources? (Choose two.)

A. A ClusterIP type service can only be accessed within a Kubernetes cluster.
B. NodePort service exposes the service externally by using a cloud provider load balancer.
C. A daemonSet ensures that a replica of a pod is running on all nodes.
D. A deploymentConfig is a Kubernetes resource.

Answer: A,C

Explanation:
A daemonSet in Kubernetes ensures that a replica of a pod is running on all nodes. A ClusterIP type service can only be accessed within a Kubernetes cluster.

NEW QUESTION # 16
......

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