JN0-214 Practice Questions

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.  

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.  

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.  

Incorrect:This statement contradicts the NFV architecture. NFVI is indeed a core component of NFV, providing the necessary infrastructure for VNFs.

D.  

Incorrect:The NFV framework is defined by the European Telecommunications Standards Institute (ETSI), not the W3

C.  

ETSI’s NFV Industry Specification Group (ISG) established the standards and architecture for NFV.

Why These Answers?

Framework Explanation: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 References:

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.

OpenShift provides multiple methods for installing and deploying clusters, depending on the level of control and automation desired. Let’s analyze each option:

A.  

Correct:

Installer-provisioned infrastructure (IPI)is an automated installation method where the OpenShift installer provisions and configures the underlying infrastructure (e.g., virtual machines, networking) using cloud provider APIs or bare-metal platforms. This method simplifies deployment by handling most of the setup automatically.

B.  

Incorrect:

kubeadmis a tool used to bootstrap Kubernetes clusters manually. While it is widely used for Kubernetes installations, it is not specific to OpenShift and is not an official installation method for OpenShift clusters.

C.  

Correct:

User-provisioned infrastructure (UPI)is a manual installation method where users prepare and configure the infrastructure (e.g., virtual machines, load balancers, DNS) before deploying OpenShift. This method provides greater flexibility and control over the environment but requires more effort from the user.

D.  

Incorrect:

Kubesprayis an open-source tool used to deploy Kubernetes clusters on various infrastructures. Likekubeadm, it is not specific to OpenShift and is not an official installation method for OpenShift clusters.

Why These Methods?

Installer-Provisioned Infrastructure (IPI):Automates the entire installation process, making it ideal for users who want a quick and hassle-free deployment.

User-Provisioned Infrastructure (UPI):Allows advanced users to customize the infrastructure and tailor the deployment to their specific needs.

JNCIA Cloud References:

The JNCIA-Cloud certification covers OpenShift installation methods as part of its curriculum on container orchestration platforms. Understanding the differences between IPI and UPI is essential for deploying OpenShift clusters effectively.

For example, Juniper Contrail integrates with OpenShift to provide advanced networking features, regardless of whether the cluster is deployed using IPI or UPI.