Full BL0-220 Practice Test and 62 unique questions with explanations waiting just for you!
Nokia Bell Labs 5G Dumps BL0-220 Exam for Full Questions - Exam Study Guide
Nokia BL0-220 certification exam is a valuable credential for anyone who is interested in working with cloud networks and distributed systems. By demonstrating a high level of expertise in this area, individuals can enhance their career prospects, establish themselves as experts, and contribute to the ongoing development and innovation of this exciting and rapidly evolving field.
NEW QUESTION # 28
Select the best option below to complete the following sentence.
On-Boarding of a Network Service requires both____and____templates.
- A. Application, Cloud
- B. CNF, VNF
- C. Container, VIM
- D. NS, NF
Answer: D
Explanation:
On-Boarding of a Network Service requires both NS and NF templates. NS stands for Network Service, which is a logical grouping of network functions and resources that provide a specific functionality or service to the end user. NF stands for Network Function, which is a software component that performs a specific task or function within the network. Templates are files that describe the characteristics, requirements, and dependencies of network services and network functions. On-Boarding is the process of registering and validating network services and network functions in the cloud platform, so that they can be instantiated and managed.
Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 5: New Services Automation, slide 7 Module by Module - Self Study Note Guide, DC5.1- New Services Automation, page 19 On-boarding a Network Service typically involves Network Service (NS) and Network Function (NF) templates. NS templates define the overall structure and requirements of a network service, including its composition of various NFs and their interconnections. NF templates specify the configurations for individual network functions that are part of the service. Together, they enable the automated deployment and management of complex network services in a standardized manner.
NEW QUESTION # 29
What is the main advantage of development concepts such DevOps and CI/CD used in cloud native applications?
- A. To reduce time and complexity for development and deployment.
- B. To separate development and deployment in different phases.
- C. To increase the number of check point in development and deployment procedures.
- D. To eliminate validation phase of application development.
Answer: A
Explanation:
To reduce time and complexity for development and deployment. Comprehensive Explanation and Reference of Correct answer: The main advantage of development Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 4: Operating Your Cloud, slide 3 Catching the 5G train with CI/CD Services, paragraph 1 Nokia unveils new 5G core deployment services to give operators better capabilities, paragraph 1
NEW QUESTION # 30
Which of the following statements is correct regarding distributed cloud and cloud options?
- A. Cloud options are complementary with distributed cloud.
- B. Cloud options are the same concept as distributed cloud.
- C. Cloud options are the opposite of distributed cloud.
Answer: A
Explanation:
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 Description 2: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Topic: Cloud Options 3: Cloud continuum | Nokia, Overview
NEW QUESTION # 31
Which one of the following requires a Network Service Descriptor defined in a catalog?
- A. Cloud software platform
- B. Cloud orchestration
- C. Cloud infrastructure software
- D. Software defined network
Answer: B
Explanation:
A Network Service Descriptor (NSD) is a template that defines the characteristics and requirements of a network service, such as the number and type of virtual network functions (VNFs), the connectivity and topology between them, the scaling policies, and the service level agreements1. A NSD is defined in a catalog that is managed by the cloud orchestration layer, which is responsible for deploying, monitoring, and controlling the network services across the distributed cloud2. Therefore, cloud orchestration requires a NSD defined in a catalog, while the other options do not. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, Topic: Network Service Descriptor Role 2: Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, Topic: Cloud Orchestration A Network Service Descriptor (NSD) is an integral part of network function virtualization (NFV) architecture. It describes the composition of network services, including how different network functions are chained or combined to provide a specific service. Cloud orchestration involves the automated management of various cloud computing services and resources, including networking services. It requires a comprehensive description of these services (i.e., NSD) to automate their deployment, scaling, and management effectively. NSD in a catalog would be used to define the parameters and configurations needed for the orchestrated service to be deployed in a cloud environment, making cloud orchestration the most likely context for requiring an NSD.
NEW QUESTION # 32
Kubemetes is a:
- A. Orchestrator
- B. Platform
- C. Template
- D. Hypervisor
Answer: A
Explanation:
Kubernetes is an orchestrator, which is a software system that automates the deployment, scaling, and management of containerized applications1. Kubernetes allows users to define the desired state and configuration of their applications, and then ensures that the actual state matches the desired state2. Kubernetes also provides features such as service discovery, load balancing, storage management, and self-healing3. Therefore, option B best describes Kubernetes, while options A, C, and D are incorrect. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Topic: Microservices and Containerization 2: What is Kubernetes? | Kubernetes, Overview 3: Kubernetes - an overview | ScienceDirect Topics, Overview
NEW QUESTION # 33
Which of the follow are descriptions are correct regarding containers? (Select 2)
- A. No limited access to resources.
- B. A logical space in the host's operating system.
- C. Is a software like a VM.
- D. Is in an isolated environment.
Answer: B,D
Explanation:
A logical space in the host's operating system and B. 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 Virtualization 2: Nokia Container Services, Overview 3: Nokia Cloud Platform, Overview 4: Containers vs. virtual machines: What's the difference?, Comparison
NEW QUESTION # 34
Which of the following statements is correct regarding monolithic applications?
- A. Monolithic applications involve the most complex management strategy.
- B. Monolithic applications are a mono-block functional service.
- C. Monolithic applications are smaller in size than cloud native applications.
- D. Monolithic applications are more reliable than microservices.
Answer: B
Explanation:
Monolithic applications are a mono-block functional service because they are composed of a single, self-contained unit that contains all the components of the application, such as the user interface, business logic, data access, etc1. Monolithic applications are not smaller in size than cloud native applications, as they tend to grow larger and more complex over time2. Monolithic applications are not more reliable than microservices, as they are more prone to failures, bugs, and performance issues due to the tight coupling and interdependency of the components3. Monolithic applications do not involve the most complex management strategy, as they are easier to develop, test, and deploy initially, but they become harder to maintain, scale, and update as the application evolves4. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.4: Cloud Application Architectures 2: Monolithic Architecture 3: Microservices vs Monolithic Architecture 4: Monolithic vs. Microservices Architecture
NEW QUESTION # 35
Which of the following best describes the scaling stage of the application life cycle?
- A. The application adjusts its capacity.
- B. The application will be deployed over the infrastructure.
- C. The periodic upgrade of the service to be maintain security and performance standards.
- D. The application will terminate and free associated resources.
Answer: A
Explanation:
The statement that best describes the scaling stage of the application life cycle is the application adjusts its capacity. Scaling is the process of increasing or decreasing the number of resources allocated to an application based on the demand and performance1. Scaling can be done manually or automatically using policies and metrics1. The other statements do not describe the scaling stage, but rather other stages of the application life cycle. The periodic upgrade of the service is part of the maintenance stage, which ensures the reliability and security of the application2. The deployment of the application over the infrastructure is part of the installation stage, which involves the configuration and activation of the application2. The termination and freeing of associated resources is part of the decommissioning stage, which removes the application from the network2. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, slide 23 2: Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, slide 10
NEW QUESTION # 36
Which of the following are properties related to a public cloud? (Select 2)
- A. Easy scaling
- B. O&A requirement
- C. Very complex management
- D. For users, there is no cloud infrastructure operation
- E. An In-house solution
Answer: A,D
Explanation:
The properties related to a public cloud are for users, there is no cloud infrastructure operation and easy scaling. A public cloud is a cloud service that is offered by a third-party provider over the public internet, and is available to anyone who wants to use or purchase it1. Users of public cloud do not need to operate or maintain the cloud infrastructure, as it is the responsibility of the cloud provider2. Public cloud also offers easy scaling, as users can quickly and dynamically provision or release resources according to their needs2. Public cloud is suitable for applications that have unpredictable or variable demand, or that do not require a high level of security or customization3. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 1: Cloud Ecosystem, Section 1.1: Cloud Types 2: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.1: Cloud Computing 3: Nokia and DISH to deploy first 5G standalone core network in the public cloud with AWS, Press Release
NEW QUESTION # 37
It is possible to run a cloud solution in a Single Node.
- A. False
- B. True
Answer: A
Explanation:
It is not possible to run a cloud solution in a Single Node. A cloud solution requires a minimum of three nodes to provide high availability, scalability, and fault tolerance1. A Single Node is a standalone server that does not have any redundancy or load balancing features2. A Single Node can be used for testing or development purposes, but not for production or deployment of cloud applications.
NEW QUESTION # 38
Select the word that best completes the following sentence.
The Core or Central Cloud covers a very large___.
- A. area
- B. operating
- C. limit
- D. management
Answer: A
Explanation:
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
NEW QUESTION # 39
A group of small services combine to deliver user specific service.
- A. False
- B. True
Answer: B
Explanation:
A group of small services combine to deliver user specific service is a true statement. This is the definition of microservices, which are a key component of cloud technologies and features. Microservices are independent, modular, and scalable services that communicate with each other through APIs. They enable faster and easier development, deployment, and maintenance of cloud applications.
Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks | Nokia Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, slide 6 Nokia Bell Labs 5G Certification Program - Courses | Nokia, Distributed Cloud Networks, Unit 2: Cloud Technologies and Features
NEW QUESTION # 40
What are the available options to interconnect private Datacenters? (Select 2)
- A. VIP
- B. VLAN
- C. VPN
- D. Backbone
Answer: C,D
Explanation:
The available options to interconnect private Datacenters are VPN and Backbone. VPN stands for Virtual Private Network, which is a secure and encrypted connection between two or more networks over the public internet. Backbone is a high-capacity network that connects different data centers across regions or countries. Both VPN and Backbone provide reliable, scalable, and secure data center interconnect (DCI) solutions for private/hybrid clouds. Reference: Nokia Cloud DCI offers a more scalable, reliable and secure way to connect data centers in private/hybrid clouds, Nokia business-critical cloud DCI solutions support multiple DCI applications, from real-time business continuity and disaster recovery, to synchronous data replication and cloud backup, Nokia partners with IP Telecom to deliver quantum-safe data center connectivity
NEW QUESTION # 41
What does the standardization of network functions provide? (Select 2)
- A. Flexible rules open to interpretation.
- B. Simplicity for the implementation.
- C. Well defined interfaces.
- D. Defined functional elements.
Answer: C,D
Explanation:
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.
Reference:
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
NEW QUESTION # 42
Select the option that best completes the following sentence.
____is a key component in the Closed loop automation.
- A. Knowledge database
- B. Common inventory database
- C. Catalog Database
- D. Policy Database
Answer: D
Explanation:
A Policy Database is a key component in Closed Loop Automation. It stores the policies that govern the automated decision-making processes within a system. These policies define the actions to be taken in response to specific events or conditions, enabling the system to automatically adjust its operations without human intervention, thus increasing efficiency and responsiveness.
NEW QUESTION # 43
The ETSI MANO Model operational stack is defined as?
- A. Infrastructure Management above Orchestration above Network Function Management
- B. Infrastructure Management above Network Function Management above Orchestration
- C. Network Function Management above Orchestration above Infrastructure Management '
- D. Orchestration above Network Function Management above Infrastructure Management
Answer: D
Explanation:
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: Orchestration 2: Module by Module - Self Study Note Guide - training2
NEW QUESTION # 44
What does OCP stands for?
- A. Open Data Center Platform
- B. Operations and Control
- C. Open Circuit Platform
- D. Open Compute Project
Answer: D
Explanation:
OCP stands for Open Compute Project, which is an initiative to design and enable the delivery of the most efficient server, storage and data center hardware designs for scalable computing1. OCP is the primary cloud infrastructure platform to develop, test and deliver Nokia's core network applications and business applications, benefiting from its scalability, flexibility, and advanced orchestration capabilities2. OCP is also part of the Nokia Cloud Platform, which is a TCO optimized solution that combines OCP with Nokia's reference hardware and blueprint architecture2. Reference: 1: Open Compute Project, Home Page 2: Nokia Cloud Platform,
NEW QUESTION # 45
Cloud resource management provides which of the following? (Select 2)
- A. Resources when available.
- B. The ability to scale resources up and down.
- C. Best effort communication for all tenants.
- D. Management of the resources quota.
Answer: B,D
Explanation:
Cloud resource management provides management of the resources quota and the ability to scale resources up and down. Resource quota is the limit on the amount of resources that a tenant can use in a cloud environment, such as CPU, memory, storage, network, etc. Resource quota helps to prevent overconsumption of resources by a single tenant and to ensure fair allocation of resources among multiple tenants. The ability to scale resources up and down means that the cloud can dynamically adjust the amount of resources allocated to a tenant based on the demand and availability. Scaling resources up and down helps to optimize the performance and efficiency of the cloud, as well as to reduce the cost and waste of resources. Reference: Nokia Bell Labs Distributed Cloud Networks, Cloud Resource Planning
NEW QUESTION # 46
Which of the following are characteristics of traditional monolithic services. (Select 2)
- A. Fixed capacity
- B. Very light weight application
- C. Low scalability
- D. Very fast deployment
Answer: A,C
Explanation:
The characteristics of traditional monolithic services are low scalability and fixed capacity. Monolithic services are applications that are built as a single unit, where all the components are tightly coupled and run in the same process. This makes them hard to scale, as they require more resources and coordination to handle increased demand. Monolithic services also have fixed capacity, as they are designed for a specific workload and cannot adapt to changing requirements or traffic patterns. Monolithic services are often slow to deploy, as they require updating the entire application for any change or improvement. Reference: [Cloud Native applications design], [Microservices and Containerization]
NEW QUESTION # 47
Which of the following are true regarding Network Service Orchestration? (Select 2)
- A. It increases operational complexity.
- B. Is part of the 5G key enablers.
- C. It does not provide Geo redundancy.
- D. It automates NFV service.
Answer: B,D
Explanation:
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.
Reference:
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
NEW QUESTION # 48
Which of the following best describes the networking concept of "Isolation"?
- A. It's the physical network layer.
- B. It restricts traffic within network.
- C. It allows each tenant to have their own network configuration.
- D. It's the virtual network layer.
Answer: C
Explanation:
Isolation is the networking concept that ensures that each tenant or user of a cloud service has their own network configuration and resources, such as IP addresses, subnets, firewalls, and routers. Isolation provides security, privacy, and performance benefits for the cloud tenants, as they can control and customize their own network settings and avoid interference or conflicts with other tenants. Isolation can be achieved by using different techniques, such as VLANs, VXLANs, VPNs, or network slicing.
Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks | Nokia Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, slide 10 Nokia Bell Labs 5G Certification Program - Courses | Nokia, Distributed Cloud Networks, Unit 2: Cloud Technologies and Features Isolation in networking, particularly in the context of cloud computing, refers to the separation of network traffic for different users or tenant environments within a shared infrastructure. This ensures that each tenant's data and applications remain private and inaccessible to other tenants. Isolation can be achieved through various means, including virtual LANs (VLANs), network virtualization, and software-defined networking (SDN) techniques. The core idea is to provide tenants with the illusion of a private, dedicated network environment, even though the underlying physical infrastructure is shared among multiple tenants. This enables each tenant to have their own network configuration, policies, and management, ensuring security and privacy within a multi-tenant architecture.
NEW QUESTION # 49
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