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JN0-214 Detail Explanation - JN0-214 Braindump Free

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Juniper JN0-214 Exam Syllabus Topics:

Topic
Details

Topic 1

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 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

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 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.

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Juniper Cloud, Associate (JNCIA-Cloud) Sample Questions (Q17-Q22):

NEW QUESTION # 17
Which command should you use to obtain low-level information about Docker objects?

A. docker inspect <OBJECT_NAME>
B. docker info <OBJECT_NAME>
C. docker container <OBJECT_NAME>
D. docker system <OBJECT_NAME>

Answer: A

Explanation:
Docker provides various commands to manage and interact with Docker objects such as containers, images, networks, and volumes. To obtain low-level information about these objects, the docker inspect command is used. Let's analyze each option:
A . docker info <OBJECT_NAME>
Incorrect: The docker info command provides high-level information about the Docker daemon itself, such as the number of containers, images, and system-wide configurations. It does not provide detailed information about specific Docker objects.
B . docker inspect <OBJECT_NAME>
Correct: The docker inspect command retrieves low-level metadata and configuration details about Docker objects (e.g., containers, images, networks, volumes). This includes information such as IP addresses, mount points, environment variables, and network settings. It outputs the data in JSON format for easy parsing and analysis.
C . docker container <OBJECT_NAME>
Incorrect: The docker container command is a parent command for managing containers (e.g., docker container ls, docker container start). It does not directly provide low-level information about a specific container.
D . docker system <OBJECT_NAME>
Incorrect: The docker system command is used for system-wide operations, such as pruning unused resources (docker system prune) or viewing disk usage (docker system df). It does not provide low-level details about specific Docker objects.
Why docker inspect?
Detailed Metadata: docker inspect is specifically designed to retrieve comprehensive, low-level information about Docker objects.
Versatility: It works with multiple object types, including containers, images, networks, and volumes.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers Docker as part of its containerization curriculum. Understanding how to use Docker commands like docker inspect is essential for managing and troubleshooting containerized applications in cloud environments.
For example, Juniper Contrail integrates with container orchestration platforms like Kubernetes, which rely on Docker for container management. Proficiency with Docker commands ensures effective operation and debugging of containerized workloads.
Reference:
Docker Documentation: docker inspect Command
Juniper JNCIA-Cloud Study Guide: Containerization

NEW QUESTION # 18
You are asked to run a container in a Kubernetes environment.
What should you do to accomplish this task?

A. Create a JINJA2 template 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 WYSYG definition 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 # 19
Which two statements are correct about an underlay network? (Choose two.)

A. A Layer 3 underlay network uses routing protocols to provide IP connectivity.
B. The underlay network is the virtual network used to connect multiple virtual machines (VMs).
C. The underlay network is built using encapsulations tunnels.
D. An underlay network can be built using either Layer 2 or Layer 3 connectivity.

Answer: A,D

Explanation:
An underlay network refers to the physical or logical network infrastructure that provides the foundation for overlay networks in cloud environments. It handles the actual transport of data between devices and serves as the backbone for cloud architectures. Let's analyze each statement:
A . An underlay network can be built using either Layer 2 or Layer 3 connectivity.
Correct: Underlay networks can operate at both Layer 2 (switching) and Layer 3 (routing). For example:
Layer 2: Uses Ethernet switching to forward traffic within a single broadcast domain.
Layer 3: Uses IP routing to forward traffic across multiple subnets or networks.
B . A Layer 3 underlay network uses routing protocols to provide IP connectivity.
Correct: In a Layer 3 underlay network, routing protocols like OSPF, BGP, or EIGRP are used to exchange routing information and ensure IP connectivity between devices. This is common in large-scale cloud environments where scalability and segmentation are critical.
C . The underlay network is the virtual network used to connect multiple virtual machines (VMs).
Incorrect: The underlay network is the physical or logical infrastructure that supports the overlay network. The overlay network, on the other hand, is the virtual network used to connect VMs, containers, or other endpoints. The underlay provides the foundation, while the overlay adds abstraction and flexibility.
D . The underlay network is built using encapsulations tunnels.
Incorrect: Encapsulation tunnels (e.g., VXLAN, GRE) are used in overlay networks, not underlay networks. The underlay network provides the physical or logical transport layer, while the overlay network uses tunnels to create virtualized network segments.
Why These Answers?
Layer 2 and Layer 3 Flexibility: The underlay network must support both switching and routing to accommodate diverse workloads and topologies.
Routing Protocols in Layer 3: Routing protocols are essential for scalable and efficient IP connectivity in Layer 3 underlay networks.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers underlay and overlay networks as part of its discussion on cloud architectures. Understanding the distinction between underlay and overlay networks is crucial for designing and managing cloud environments.
For example, Juniper Contrail uses an underlay network to provide the physical connectivity required for overlay networks. The underlay ensures reliable and scalable transport, while the overlay enables flexible virtualized networking.
Reference:
Juniper JNCIA-Cloud Study Guide: Underlay and Overlay Networks
Network Virtualization Documentation

NEW QUESTION # 20
Which Docker component builds, runs, and distributes Docker containers?

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

Answer: D

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 # 21
Which two statements are true about virtual networks? (Choose two.)

A. Virtual networks are available only as part of a cloud orchestration system.
B. Virtual networks are limited to a single device.
C. Virtual networks are able to span multiple devices.
D. Virtual networks are available on common Linux distributions.

Answer: C,D

Explanation:
Virtual networks are logical networks that are decoupled from the underlying network hardware.
This decoupling allows network administrators to manage their networks independently of the physical network topology. As such, virtual networks can span multiple devices, allowing for a high degree of flexibility and scalability. Furthermore, virtual networks are available on common Linux distributions, allowing for easy deployment and management.

NEW QUESTION # 22
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