Latest JN0-214 Study Notes - JN0-214 Questions Exam

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Juniper JN0-214 Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	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 3	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 4	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 5	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.

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Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q44-Q49):

NEW QUESTION # 44
Click the Exhibit button.

Referring to the exhibit, which two statements are correct? (Choose two.)

A. The myvSRX instance is using a default image.
B. The c using a custom flavor.
C. The myvSRX instance is currently running.
D. The myvSRX instance is part of a default network.

Answer: B,C

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 # 45
Which Kubernetes component guarantees the availability of ReplicaSet pods on one or more nodes?

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

Answer: C

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 # 46
You are asked to run a container in a Kubernetes environment.
What should you do to accomplish this task?

A. Create a WYSYG definition for the container and its resources.
B. Define a YAML manifest for the container and its resources.
C. Define an XML configuration for the container and its resources.
D. Create a JINJA2 template for the container and its resources.

Answer: B

Explanation:
To run a container in a Kubernetes environment, you should define a YAML manifest for the container and its resources. YAML manifests are used to define Kubernetes objects, such as pods or services. These manifests describe the desired state of the system.

NEW QUESTION # 47
Click the Exhibit button.

You have issued the openstack server show VM-A command and received the output shown in the exhibit.
To which virtual network is the VM-A instance attached?

A. m1.tiny
B. Nova
C. public1
D. kollaopenstack

Answer: C

Explanation:
The openstack server show command provides detailed information about a specific virtual machine (VM) instance in OpenStack. The output includes details such as the instance name, network attachments, power state, and more. Let's analyze the question and options:
Key Information from the Exhibit:
The addresses field in the output shows
public1=10.0.2.176
This indicates that the VM-A instance is attached to the virtual network named public1 , with an assigned IP address of 10.0.2.176 .
Option Analysis:
A . m1.tiny
Incorrect: m1.tiny refers to the flavor of the VM, which specifies the resource allocation (e.g., CPU, memory, disk). It is unrelated to the virtual network.
B . public1
Correct: The addresses field explicitly states that the VM-A instance is attached to the public1 virtual network.
C . Nova
Incorrect: Nova is the OpenStack compute service that manages VM instances. It is not a virtual network.
D . kollaopenstack
Incorrect: kollaopenstack appears in the output as the hostname or project name but does not represent a virtual network.
Why public1?
Network Attachment: The addresses field in the output directly identifies the virtual network (public1) to which the VM-A instance is attached.
IP Address Assignment: The IP address (10.0.2.176) confirms that the VM is connected to the public1 network.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding OpenStack commands and outputs, including the openstack server show command. Recognizing how virtual networks are represented in OpenStack is essential for managing VM connectivity.
For example, Juniper Contrail integrates with OpenStack Neutron to provide advanced networking features for virtual networks like public1.
Reference:
OpenStack CLI Documentation: openstack server show Command
Juniper JNCIA-Cloud Study Guide: OpenStack Networking

NEW QUESTION # 48
In OpenShift, which node type is used to host your application containers?

A. full node
B. control plane node
C. miner node
D. worker node

Answer: D

Explanation:
In OpenShift, the worker node is used to host your application containers. Worker nodes are where all your coding adventures happen, and they can be virtual or physical.

NEW QUESTION # 49
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