Nokia BL0-220 Practice Test - Questions Answers, Page 6

The ETSI MANO Model operational stack is defined as Orchestration above Network Function Management above Infrastructure Management.The ETSI MANO Model is a framework that defines the architecture and interfaces for the management and orchestration of network functions virtualization (NFV) in cloud networks1.The ETSI MANO Model consists of three main components: Infrastructure Management, Network Function Management, and Orchestration2.Infrastructure Management is responsible for managing the physical and virtual resources that host the network functions, such as servers, storage, switches, hypervisors, and virtual machines2.Network Function Management is responsible for managing the configuration, monitoring, and optimization of the network functions, such as scaling, healing, and updating2.Orchestration is responsible for coordinating the allocation and release of resources for network services and network slices, such as instantiation, termination, and modification2.The ETSI MANO Model operational stack is defined as Orchestration above Network Function Management above Infrastructure Management, meaning that Orchestration is the highest level of abstraction and control, Network Function Management is the intermediate level, and Infrastructure Management is the lowest level2.Reference:1: Nokia Bell Labs Distributed Cloud Networks, Unit 5: New Services Automation, Section 5.3: Orchestration2: Module by Module - Self Study Note Guide - training2

The Core or Central Cloud covers a very large area, as it is the most centralized part of the Distributed Cloud architecture. It provides high-performance computing and storage resources for applications that do not require low latency or high bandwidth. It also hosts the management and orchestration functions for the entire Distributed Cloud network.The Core or Central Cloud is typically located in a data center or a cloud service provider's facility12.Reference:

Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks

Nokia Bell Labs 5G Certification Program - Courses

Network Service Orchestration is the process of managing the lifecycle of network services across multiple domains and technologies. It automates NFV service by deploying, configuring, and scaling virtual network functions (VNFs) on demand. It is part of the 5G key enablers because it supports the dynamic and flexible provisioning of network slices and edge cloud applications. It does not increase operational complexity, but rather simplifies and optimizes it by using AI/ML and closed loop automation.

Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks | Nokia Distributed Cloud Networks, Unit 4: Operating Your Cloud, slide 8

Nokia Bell Labs 5G Certification Program - Courses | Nokia, Distributed Cloud Networks, Unit 4: Operating Your Cloud

The approximate maximum distance of an Edge Cloud from the end-user is 300KM.Edge Cloud is a type of cloud deployment that brings cloud resources closer to the end-user, reducing latency and improving performance1.Edge Cloud can be located at various distances from the end-user, depending on the use case and the network topology2.However, the general range of distance for Edge Cloud is between 10KM and 300KM3. 10000KM, 5000KM, and 10Q0KM are too far to be considered as Edge Cloud, as they would introduce significant delays and inefficiencies in the network.

A logical space in the host's operating systemandB. Is in an isolated environment.A container is a software package that bundles an application and its dependencies, and runs as an isolated process in the host's operating system1.Containers are lightweight, portable, and scalable, and can be deployed on any cloud infrastructure2.Unlike virtual machines (VMs), containers do not need a separate operating system or hypervisor, and share the kernel of the host3.However, containers have limited access to resources, as they are restricted by the host's capabilities and the container runtime4.Reference:1:Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.2: Cloud Virtualization2:Nokia Container Services, Overview3:Nokia Cloud Platform, Overview4:Containers vs. virtual machines: What's the difference?, Comparison

Distributed cloud is a concept that refers to the deployment of cloud services across multiple locations, such as public, private, hybrid, or edge clouds1.Cloud options are the different types of cloud models that can be used to meet the specific needs and requirements of different applications and users2.Cloud options are complementary with distributed cloud, as they enable the flexibility and scalability of cloud services across the cloud continuum3.Therefore, option B is the correct statement, while options A and C are incorrect.Reference:1:Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Topic: Distributed Cloud Description2:Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Topic: Cloud Options3:Cloud continuum | Nokia, Overview

Scalability and Openness are the focus of an agile data center. Scalability refers to the ability of a data center to adapt to changing demands and workloads by adding or removing resources dynamically. Openness refers to the use of open standards and interfaces that enable interoperability and integration of different technologies and vendors in a data center. An agile data center can provide flexible, efficient, and cost-effective services to customers and applications, while reducing operational complexity and overhead. Fixed Architecture and Closed Cloud System are not the focus of an agile data center. Fixed Architecture means a rigid and predefined structure of a data center that cannot be easily modified or customized. Closed Cloud System means a proprietary and isolated cloud platform that does not support compatibility or collaboration with other cloud platforms or services. A fixed architecture and a closed cloud system can limit the performance, functionality, and innovation of a data center, and increase the dependency and lock-in of customers and applications.Reference:Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 1: Cloud Ecosystem, Section 1.3: Cloud Agility.

The standardization of network functions provides well defined interfaces and defined functional elements. Well defined interfaces are the specifications that describe how network functions communicate and interact with each other and with other network components. Defined functional elements are the components that perform specific tasks or functions within the network. By standardizing these aspects, network functions can achieve interoperability, compatibility, and modularity, which are essential for building and deploying network services.

Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 13

Module by Module - Self Study Note Guide, DC3.2-- Network Function, page 13

Security is crucial for data centers and their users because data centers store, process, and transmit large amounts of sensitive and valuable data for various organizations and individuals. Data centers face various security threats such as cyberattacks, natural disasters, human errors, power outages, etc.that can compromise the confidentiality, integrity, and availability of the data and the services1. Therefore, data centers need to implement various security measures such as encryption, authentication, authorization, backup, firewall, antivirus, physical security, etc.to protect the data and the users from unauthorized access, data loss, data corruption, service disruption, etc2.Reference:1: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.3: Cloud Networking Features2:Data Center Security: What You Need to Know