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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	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	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 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.

Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q59-Q64):

NEW QUESTION # 59
What is the name of the Docker container runtime?

A. docker cl
B. cri-o
C. dockerd
D. containerd

Answer: D

Explanation:
The name of the Docker container runtime is containerd, which is a daemon that manages the complete container lifecycle of its host system, from image transfer and storage to container execution and supervision to low-level storage to network attachments and beyond. Dockerd is the Docker daemon that acts as the primary user interface for Docker. Docker cl is not a valid name for any Docker component. Cri-o is another container runtime that implements the Kubernetes Container Runtime Interface (CRI) to enable using OCI (Open Container Initiative) compatible runtimes.

NEW QUESTION # 60
You want to limit the memory, CPU, and network utilization of a set of processes running on a Linux host.
Which Linux feature would you configure in this scenario?
You want to limit the memory, CPU, and network utilization of a set of processes running on a Linux host.
Which Linux feature would you configure in this scenario?

A. network namespaces
B. slicing
C. control groups
D. virtual routing and forwarding instances

Answer: C

Explanation:
Linux provides several features to manage system resources and isolate processes. Let's analyze each option:
A . virtual routing and forwarding instances
Incorrect: Virtual Routing and Forwarding (VRF) is a networking feature used to create multiple routing tables on a single router or host. It is unrelated to limiting memory, CPU, or network utilization for processes.
B . network namespaces
Incorrect: Network namespaces are used to isolate network resources (e.g., interfaces, routing tables) for processes. While they can help with network isolation, they do not directly limit memory or CPU usage.
C . control groups
Correct: Control Groups (cgroups) are a Linux kernel feature that allows you to limit, account for, and isolate the resource usage (CPU, memory, disk I/O, network) of a set of processes. cgroups are commonly used in containerization technologies like Docker and Kubernetes to enforce resource limits.
D . slicing
Incorrect: "Slicing" is not a recognized Linux feature for resource management. This term may refer to dividing resources in other contexts but is not relevant here.
Why Control Groups?
Resource Management: cgroups provide fine-grained control over memory, CPU, and network utilization, ensuring that processes do not exceed their allocated resources.
Containerization Foundation: cgroups are a core technology behind container runtimes like containerd and orchestration platforms like Kubernetes.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers Linux features like cgroups as part of its containerization curriculum. Understanding cgroups is essential for managing resource allocation in cloud environments.
For example, Juniper Contrail integrates with Kubernetes to manage containerized workloads, leveraging cgroups to enforce resource limits.
Reference:
Linux Kernel Documentation: Control Groups
Juniper JNCIA-Cloud Study Guide: Linux Features

NEW QUESTION # 61
Which Docker component builds, runs, and distributes Docker containers?

A. dockerd
B. docker cli
C. docker registry
D. container

Answer: A

Explanation:
Docker is a popular containerization platform that includes several components to manage the lifecycle of containers. Let's analyze each option:
A . dockerd
Correct: The Docker daemon (dockerd) is the core component responsible for building, running, and distributing Docker containers. It manages Docker objects such as images, containers, networks, and volumes, and handles requests from the Docker CLI or API.
B . docker registry
Incorrect: A Docker registry is a repository for storing and distributing Docker images. While it plays a role in distributing containers, it does not build or run them.
C . docker cli
Incorrect: The Docker CLI (Command Line Interface) is a tool used to interact with the Docker daemon (dockerd). It is not responsible for building, running, or distributing containers but rather sends commands to the daemon.
D . container
Incorrect: A container is an instance of a running application created from a Docker image. It is not a component of Docker but rather the result of the Docker daemon's operations.
Why dockerd?
Central Role: The Docker daemon (dockerd) is the backbone of the Docker platform, managing all aspects of container lifecycle management.
Integration: It interacts with the host operating system and container runtime to execute tasks like building images, starting containers, and managing resources.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers Docker as part of its containerization curriculum. Understanding the role of the Docker daemon is essential for managing containerized applications in cloud environments.
For example, Juniper Contrail integrates with Docker to provide advanced networking and security features for containerized workloads, relying on the Docker daemon to manage containers.
Reference:
Docker Documentation: Docker Daemon
Juniper JNCIA-Cloud Study Guide: Containerization

NEW QUESTION # 62
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. Nova
B. kollaopenstack
C. m1.tiny
D. public1

Answer: D

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 # 63
Which two statements are correct about Kubernetes resources? (Choose two.)

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

Answer: C,D

Explanation:
Incorrect:
A NodePort service exposes the service on a static port on each node in the cluster, allowing external access via the node's IP address and the assigned port. However, it does not use a cloud provider load balancer. The LoadBalancer service type is the one that leverages cloud provider load balancers for external access.
Why These Statements?
ClusterIP: Ensures internal-only communication, making it suitable for backend services that do not need external exposure.
DaemonSet: Guarantees that a specific pod runs on all nodes, ensuring consistent functionality across the cluster.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers Kubernetes resources and their functionalities, including services, DaemonSets, and Deployments. Understanding these concepts is essential for managing Kubernetes clusters effectively.
For example, Juniper Contrail integrates with Kubernetes to provide advanced networking features for services and DaemonSets, ensuring seamless operation of distributed applications.
Explanation:
Kubernetes resources are the building blocks of Kubernetes clusters, enabling the deployment and management of applications. Let's analyze each statement:
A . A ClusterIP type service can only be accessed within a Kubernetes cluster.
Correct:
A ClusterIP service is the default type of Kubernetes service. It exposes the service internally within the cluster, assigning it a virtual IP address that is accessible only to other pods or services within the same cluster. External access is not possible with this service type.
B . A daemonSet ensures that a replica of a pod is running on all nodes.
Correct:
A daemonSet ensures that a copy of a specific pod is running on every node in the cluster (or a subset of nodes if specified). This is commonly used for system-level tasks like logging agents or monitoring tools that need to run on all nodes.
C . A deploymentConfig is a Kubernetes resource.
Incorrect:
deploymentConfig is a concept specific to OpenShift, not standard Kubernetes. In Kubernetes, the equivalent resource is called a Deployment , which manages the desired state of pods and ReplicaSets.
Reference:
Kubernetes Documentation: Services, DaemonSets, and Deployments
Juniper JNCIA-Cloud Study Guide: Kubernetes Resources

NEW QUESTION # 64
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