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NEW QUESTION # 23
Click to the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
Answer: C,D
Explanation:
The openstack server list command provides information about virtual machine (VM) instances in the OpenStack environment. Let's analyze the exhibit and each statement:
Key Information from the Exhibit:
The output shows details about the myvSRX instance:
Status: ACTIVE (indicating the instance is running).
Networks: VN-A-10.1.0.3 (indicating the instance is part of a specific network).
Image: vSRX3 (indicating the instance was created using a custom image).
Flavor: vSRX-Flavor (indicating the instance was created using a custom flavor).
Option Analysis:
A . The myvSRX instance is using a default image.
Incorrect: The image name vSRX3 suggests that this is a custom image, not the default image provided by OpenStack.
B . The myvSRX instance is a part of a default network.
Incorrect: The network name VN-A-10.1.0.3 indicates that the instance is part of a specific network, not the default network.
C . The myvSRX instance is created using a custom flavor.
Correct: The flavor name vSRX-Flavor indicates that the instance was created using a custom flavor, which defines the CPU, RAM, and disk space properties.
D . The myvSRX instance is currently running.
Correct: The ACTIVE status confirms that the instance is currently running.
Why These Statements?
Custom Flavor: The vSRX-Flavor name clearly indicates that a custom flavor was used to define the instance's resource allocation.
Running Instance: The ACTIVE status confirms that the instance is operational and available for use.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding OpenStack commands and outputs, including the openstack server list command. Recognizing how images, flavors, and statuses are represented is essential for managing VM instances effectively.
For example, Juniper Contrail integrates with OpenStack Nova to provide advanced networking features for VMs, ensuring seamless operation based on their configurations.
Reference:
OpenStack CLI Documentation: openstack server list Command
Juniper JNCIA-Cloud Study Guide: OpenStack Compute
NEW QUESTION # 24
Which cloud service model provides access to networking, storage, servers, and virtualization in a cloud environment?
Answer: A
Explanation:
Cloud service models define how services are delivered and managed in a cloud environment. The three primary models are:
Infrastructure as a Service (IaaS): Provides virtualized computing resources such as servers, storage, networking, and virtualization over the internet. Customers manage their own operating systems, applications, and data, while the cloud provider manages the underlying infrastructure.
Platform as a Service (PaaS): Provides a platform for developers to build, deploy, and manage applications without worrying about the underlying infrastructure. Examples include Google App Engine and Microsoft Azure App Services.
Software as a Service (SaaS): Delivers fully functional applications over the internet, eliminating the need for users to install or maintain software locally. Examples include Salesforce CRM, Google Workspace, and Microsoft Office 365.
Database as a Service (DaaS): A specialized subset of PaaS that provides managed database services.
In this question, the focus is on access to networking, storage, servers, and virtualization , which are the core components of IaaS . IaaS allows customers to rent infrastructure on-demand and build their own environments without investing in physical hardware.
Why IaaS?
Flexibility: Customers have full control over the operating systems, applications, and configurations.
Scalability: Resources can be scaled up or down based on demand.
Cost Efficiency: Pay-as-you-go pricing eliminates upfront hardware costs.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding the different cloud service models and their use cases. IaaS is particularly relevant for organizations that want to leverage cloud infrastructure while maintaining control over their applications and data.
For example, Juniper Contrail integrates with IaaS platforms like OpenStack to provide advanced networking and security features for virtualized environments.
Reference:
NIST Cloud Computing Reference Architecture
Juniper JNCIA-Cloud Study Guide: Cloud Service Models
NEW QUESTION # 25
What are two available installation methods for an OpenShift cluster? (Choose two.)
Answer: A,D
Explanation:
There are two available installation methods for an OpenShift cluster. One is the installer- provisioned infrastructure method, and the other is the user-provisioned infrastructure method.
NEW QUESTION # 26
You just uploaded a qcow2 image of a vSRX virtual machine in OpenStack.
In this scenario, which service stores the virtual machine (VM) image?
Answer: D
Explanation:
OpenStack provides various services to manage cloud infrastructure resources, including virtual machine (VM) images. Let's analyze each option:
A . Glance
Correct: Glance is the OpenStack service responsible for managing and storing VM images. It provides a repository for uploading, discovering, and retrieving images in various formats, such as qcow2, raw, or ISO.
B . Ironic
Incorrect: Ironic is the OpenStack bare-metal provisioning service. It is used to manage physical servers, not VM images.
C . Neutron
Incorrect: Neutron is the OpenStack networking service that manages virtual networks, routers, and IP addresses. It does not store VM images.
D . Nova
Incorrect: Nova is the OpenStack compute service that manages the lifecycle of virtual machines. While Nova interacts with Glance to retrieve VM images for deployment, it does not store the images itself.
Why Glance?
Image Repository: Glance acts as the central repository for VM images, enabling users to upload, share, and deploy images across the OpenStack environment.
Integration with Nova: When deploying a VM, Nova retrieves the required image from Glance to create the instance.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers OpenStack services, including Glance, as part of its cloud infrastructure curriculum. Understanding Glance's role in image management is essential for deploying and managing virtual machines in OpenStack.
For example, Juniper Contrail integrates with OpenStack Glance to provide advanced networking features for VM images stored in the repository.
Reference:
OpenStack Glance Documentation
Juniper JNCIA-Cloud Study Guide: OpenStack Services
NEW QUESTION # 27
Which two consoles are provided by the OpenShift Web UI? (Choose two.)
Answer: B,C
Explanation:
OpenShift provides a web-based user interface (Web UI) that offers two distinct consoles tailored to different user roles. Let's analyze each option:
A . administrator console
Correct:
The administrator console is designed for cluster administrators. It provides tools for managing cluster resources, configuring infrastructure, monitoring performance, and enforcing security policies.
B . developer console
Correct:
The developer console is designed for application developers. It focuses on building, deploying, and managing applications, including creating projects, defining pipelines, and monitoring application health.
C . operational console
Incorrect:
There is no "operational console" in OpenShift. This term does not correspond to any official OpenShift Web UI component.
D . management console
Incorrect:
While "management console" might sound generic, OpenShift specifically refers to the administrator console for management tasks. This term is not officially used in the OpenShift Web UI.
Why These Consoles?
Administrator Console: Provides a centralized interface for managing the cluster's infrastructure and ensuring smooth operation.
Developer Console: Empowers developers to focus on application development without needing to interact with low-level infrastructure details.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding OpenShift's Web UI and its role in cluster management and application development. Recognizing the differences between the administrator and developer consoles is essential for effective collaboration in OpenShift environments.
For example, Juniper Contrail integrates with OpenShift to provide advanced networking features, leveraging both consoles for seamless operation.
Reference:
OpenShift Documentation: Web Console Overview
Juniper JNCIA-Cloud Study Guide: OpenShift Web UI
NEW QUESTION # 28
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