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NEW QUESTION # 62
You have built a Kubernetes environment offering virtual machine hosting using KubeVirt.
Which type of service have you created in this scenario?
Answer: D
Explanation:
Kubernetes combined with KubeVirt enables the hosting of virtual machines (VMs) alongside containerized workloads. This setup aligns with a specific cloud service model. Let's analyze each option:
A . Software as a Service (SaaS)
Incorrect: SaaS delivers fully functional applications over the internet, such as Salesforce or Google Workspace. Hosting VMs using Kubernetes and KubeVirt does not fall under this category.
B . Platform as a Service (PaaS)
Incorrect: PaaS provides a platform for developers to build, deploy, and manage applications without worrying about the underlying infrastructure. While Kubernetes itself can be considered a PaaS component, hosting VMs goes beyond this model.
C . Infrastructure as a Service (IaaS)
Correct: IaaS provides virtualized computing resources such as servers, storage, and networking over the internet. By hosting VMs using Kubernetes and KubeVirt, you are offering infrastructure-level services, which aligns with the IaaS model.
D . Bare Metal as a Service (BMaaS)
Incorrect: BMaaS provides direct access to physical servers without virtualization. Kubernetes and KubeVirt focus on virtualized environments, making this option incorrect.
Why IaaS?
Virtualized Resources: Hosting VMs using Kubernetes and KubeVirt provides virtualized infrastructure, which is the hallmark of IaaS.
Scalability and Flexibility: Users can provision and manage VMs on-demand, similar to traditional IaaS offerings like AWS EC2 or OpenStack.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes understanding cloud service models, including IaaS. Recognizing how Kubernetes and KubeVirt fit into the IaaS paradigm is essential for designing hybrid cloud solutions.
For example, Juniper Contrail integrates with Kubernetes and KubeVirt to provide advanced networking and security features for IaaS-like environments.
Reference:
KubeVirt Documentation
Juniper JNCIA-Cloud Study Guide: Cloud Service Models
NEW QUESTION # 63
Which two statements are true regarding isolated namespaces in Juniper Cloud-Native Contrail Networking (CN2)? (Choose two.)
Answer: A,C
Explanation:
In Juniper Cloud-Native Contrail Networking (CN2), isolated namespaces are used to isolate a pod from other pods without explicitly configuring a network policy. Pods in an isolated namespace can only communicate with pods in the same namespace. They cannot reach pods or services in other isolated or non-isolated namespaces.
NEW QUESTION # 64
Which two statements are correct about Network Functions Virtualization (NFV)? (Choose two.)
Answer: C,D
Explanation:
Network Functions Virtualization (NFV) is a framework designed to virtualize network services traditionally run on proprietary hardware. It decouples network functions from dedicated hardware appliances and implements them as software running on standard servers or virtual machines. Let's analyze each statement:
A . The NFV framework explains how VNFs fit into the whole solution.
Correct: The NFV framework provides a structured approach to deploying and managing Virtualized Network Functions (VNFs). It defines how VNFs interact with other components, such as the NFV Infrastructure (NFVI), Management and Orchestration (MANO), and the underlying hardware.
B . The NFV Infrastructure (NFVI) is a component of NFV.
Correct: The NFV Infrastructure (NFVI) is a critical part of the NFV architecture. It includes the physical and virtual resources (e.g., compute, storage, networking) that host and support VNFs. NFVI acts as the foundation for deploying and running virtualized network functions.
C . The NFV Infrastructure (NFVI) is not a component of NFV.
Incorrect: This statement contradicts the NFV architecture. NFVI is indeed a core component of NFV, providing the necessary infrastructure for VNFs.
D . The NFV framework is defined by the W3C.
Incorrect: The NFV framework is defined by the European Telecommunications Standards Institute (ETSI), not the W3C. ETSI's NFV Industry Specification Group (ISG) established the standards and architecture for NFV.
Why These Answers?
Framework The NFV framework provides a comprehensive view of how VNFs integrate into the overall solution, ensuring scalability and flexibility.
NFVI Role: NFVI is essential for hosting and supporting VNFs, making it a fundamental part of the NFV architecture.
JNCIA Cloud Reference:
The JNCIA-Cloud certification covers NFV as part of its cloud infrastructure curriculum. Understanding the NFV framework and its components is crucial for deploying and managing virtualized network functions in cloud environments.
For example, Juniper Contrail integrates with NFV frameworks to deploy and manage VNFs, enabling service providers to deliver network services efficiently and cost-effectively.
Reference:
ETSI NFV Framework Documentation
Juniper JNCIA-Cloud Study Guide: Network Functions Virtualization
NEW QUESTION # 65
Click to the Exhibit button.
Referring to the exhibit, which OpenStack service provides the UI shown in the exhibit?
Answer: C
Explanation:
The UI shown in the exhibit is the OpenStack Horizon dashboard. Horizon is the web-based user interface (UI) for OpenStack, providing administrators and users with a graphical interface to interact with the cloud environment. Through Horizon, users can manage resources like instances, networks, and storage, which is evident in the displayed metrics (Instances, VCPUs, RAM) for the project.
NEW QUESTION # 66
You are asked to run a container in a Kubernetes environment.
What should you do to accomplish this task?
Answer: B
Explanation:
Kubernetes uses declarative configuration files to define and manage resources like containers, pods, and services. Let's analyze each option:
A . Create a JINJA2 template for the container and its resources.
Incorrect: JINJA2 is a templating language often used in automation tools like Ansible. While it can generate Kubernetes manifests, Kubernetes itself does not use JINJA2 templates natively.
B . Create a WYSYG definition for the container and its resources.
Incorrect: "WYSYG" (What You See Is What You Get) is not a recognized format for Kubernetes configurations. Kubernetes relies on structured formats like YAML or JSON.
C . Define a YAML manifest for the container and its resources.
Correct: Kubernetes uses YAML (or JSON) manifests to define the desired state of resources, including containers, pods, and services. A YAML manifest specifies details like container images, resource limits, environment variables, and networking.
D . Define an XML configuration for the container and its resources.
Incorrect: Kubernetes does not use XML for defining resources. YAML is the standard format due to its readability and simplicity.
Why YAML Manifests?
Declarative Configuration: YAML manifests allow you to describe the desired state of your resources in a human-readable format.
Standard Practice: Kubernetes natively supports YAML for defining and deploying resources, making it the correct choice for this task.
JNCIA Cloud Reference:
The JNCIA-Cloud certification emphasizes Kubernetes resource management, including YAML manifests. Understanding how to define and apply manifests is essential for deploying and managing containerized applications.
For example, Juniper Contrail integrates with Kubernetes to provide advanced networking features, relying on YAML manifests to configure resources.
Reference:
Kubernetes Documentation: YAML Manifests
Juniper JNCIA-Cloud Study Guide: Kubernetes Resource Management
NEW QUESTION # 67
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