Apr-2024 BL0-220 Study Material, Preparation Guide and PDF Download
Free BL0-220 Certification Sample Questions with Online Practice Test
NEW QUESTION # 19
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 increase the number of check point in development and deployment procedures.
- C. To separate development and deployment in different phases.
- 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 # 20
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 # 21
Kubemetes is a:
- A. Orchestrator
- B. Template
- C. Hypervisor
- D. Platform
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 # 22
Which of the following best describes the networking concept of "Underlay"?
- A. It restricts traffic within network.
- B. It's the virtual network layer.
- C. It's the physical network layer.
- D. It allows each tenant to have their own network configuration.
Answer: C
Explanation:
The networking concept of "Underlay" refers to the physical network layer that provides the connectivity and transport for the overlay network, which is the virtual network layer that runs on top of the underlay network1. The underlay network is composed of routers, switches, links, and protocols that enable the data transmission between different locations2. The underlay network is independent of the overlay network, meaning that it does not need to be aware of the network configuration, policies, or services of the overlay network3. Therefore, option A best describes the underlay network, while options B, C, and D are incorrect. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Topic: Underlay and Overlay Networks 2: Module by Module - Self Study Note Guide, DC2.2- Cloud Options 3: Underlay Network - an overview | ScienceDirect Topics, Overview
NEW QUESTION # 23
Select the best option below to complete the following sentence.
The_________is used to orchestrate and manage traffic through VNFs.
- A. Connection Point
- B. VNF Forwarding Graph
- C. Network Forwarding Path.
- D. Virtual Link
Answer: B
Explanation:
The best option to complete the sentence is VNF Forwarding Graph. A VNF Forwarding Graph (VNF-FG) is a logical representation of a network service that consists of a set of interconnected Virtual Network Functions (VNFs) and the traffic flows between them1. The VNF-FG is used to orchestrate and manage traffic through VNFs by specifying the order and the requirements of the VNFs that need to be traversed by the traffic2. The VNF-FG also defines the connection points, virtual links, and network forwarding paths that are involved in the service delivery3. Reference: 1: VNF Forwarding Graph and Network Service-Beginner's Guide, Introduction 2: A survey of VNF forwarding graph embedding in B5G/6G networks - Springer, Section 1 3: A Deep Reinforcement Learning Approach for VNF Forwarding Graph Embedding, Section I
NEW QUESTION # 24
Multitenancy in cloud computing defines?
- A. A set of cloud resources isolated from each other.
- B. A set of cloud resources shared by several customers.
- C. A set of cloud resources assigned to the same network slice.
- D. A set of cloud resources located in different data centers.
Answer: B
Explanation:
Multitenancy in cloud computing defines a set of cloud resources shared by several customers. Multitenancy is a feature of cloud computing that allows multiple customers, or tenants, to use the same cloud infrastructure and services, such as servers, storage, network, and applications, while maintaining their own data and configuration. Multitenancy enables cloud providers to optimize the utilization and allocation of cloud resources, reduce the cost and complexity of cloud operations, and offer scalable and flexible services to different customers. Multitenancy also benefits customers by providing them with on-demand access to cloud resources, pay-per-use pricing models, and enhanced security and isolation. The other options are not correct definitions of multitenancy in cloud computing. A set of cloud resources isolated from each other is a single-tenant model, where each customer has its own dedicated cloud infrastructure and services. A set of cloud resources located in different data centers is a distributed cloud model, where cloud resources are spread across multiple physical locations to provide low latency, high availability, and local compliance. A set of cloud resources assigned to the same network slice is a network slicing model, where a logical network is created over a shared physical network to support specific applications and customers with customized performance, quality, and security. Reference: Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.2: Cloud Characteristics.
NEW QUESTION # 25
What is the approximate maximum distance of an Edge Cloud from the end-user?
- A. 5000KM
- B. 10000KM
- C. 10Q0KM
- D. 300KM
Answer: D
Explanation:
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.
NEW QUESTION # 26
What does OCP stands for?
- A. Open Circuit Platform
- B. Open Data Center Platform
- C. Operations and Control
- 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 # 27
What is the most critical benefit a cloud native deployment provides when deploying applications in complex and very low predictive environments?
- A. Reliability
- B. Adaptability
- C. Capability
Answer: B
Explanation:
Adaptability is the most critical benefit a cloud native deployment provides when deploying applications in complex and very low predictive environments. Cloud native applications are designed to be modular, scalable, resilient, and portable across different cloud platforms1. They can leverage the cloud features such as automation, orchestration, and service discovery to dynamically adjust to changing conditions and demands2. This enables them to cope with the complexity and unpredictability of the environments they operate in, such as edge computing, industrial automation, and smart cities3. Capability and reliability are also important benefits of cloud native deployment, but they are not the most critical ones. Capability refers to the ability to deliver high-performance and feature-rich applications that meet the user and business needs1. Reliability refers to the ability to ensure the availability and consistency of the applications despite failures or errors1. However, these benefits are not sufficient if the applications cannot adapt to the evolving and diverse scenarios they face in the real world. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.3: Cloud Native applications design 2: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.5: Microservices and Containerization 3: Google Cloud, Nokia partner to accelerate cloud-native 5G3
NEW QUESTION # 28
Which of the following statements is correct regarding monolithic applications?
- A. Monolithic applications are a mono-block functional service.
- B. Monolithic applications are more reliable than microservices.
- C. Monolithic applications are smaller in size than cloud native applications.
- D. Monolithic applications involve the most complex management strategy.
Answer: A
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 # 29
Select the option that best completes the following sentence.
____is a key component in the Closed loop automation.
- A. Common inventory database
- B. Knowledge database
- C. Policy Database
- D. Catalog Database
Answer: C
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 # 30
AI/ML based operation requires which of the follow? (Select 3)
- A. Closed loop automation
- B. Open APIs
- C. Standard Protocols
- D. Pre-defined policies
Answer: A,B,D
Explanation:
Closed loop automation Comprehensive Explanation and Reference of Correct answer: AI/ML based operation requires pre-defined policies, open APIs, and closed Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks | Nokia Distributed Cloud Networks, Unit 4: Operating Your Cloud, slide 7 Nokia, A1 and Microsoft deploy industry's first 5G edge cloud network slicing solution for enterprises | Nokia, paragraph 4
NEW QUESTION # 31
What does the standardization of network functions provide? (Select 2)
- A. Simplicity for the implementation.
- B. Well defined interfaces.
- C. Flexible rules open to interpretation.
- D. Defined functional elements.
Answer: B,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 # 32
Which of the following are characteristics of Cloud Native services. (Select 2)
- A. Low Scalability
- B. Fixed capacity
- C. Very light weight application
- D. Very fast deployment
Answer: C,D
Explanation:
The characteristics of Cloud Native services are very light weight application and very fast deployment. Cloud Native services are applications that are built using cloud-native design principles, such as microservices, containers, and orchestration. Cloud Native services are very light weight because they are composed of small, independent, and loosely coupled components that can run on any platform and environment. Cloud Native services are very fast to deploy because they can leverage the automation, scalability, and elasticity of the cloud infrastructure, and can be updated or rolled back without affecting the whole application. Reference: Cloud and Network Services: Leading cloud-native and as-a-service delivery models, Nokia Mobile Networks and Bell Labs 5G Cloud Native RAN Professional Certification
NEW QUESTION # 33
Select the most appropriate word to complete the following sentence:
The public cloud ecosystem is a great value for users that offers many more options and_____than the simple consumption of resources.
- A. operability
- B. constraints
- C. benefits
- D. problems
Answer: C
Explanation:
The most appropriate word to complete the sentence is benefits. The public cloud ecosystem offers many benefits to users, such as scalability, flexibility, cost-efficiency, and innovation12. Constraints, problems, and operability are not suitable words to describe the advantages of the public cloud ecosystem over the simple consumption of resources. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 1: Cloud Ecosystem, slide 7 2: Nokia Bell Labs 5G Certification Program - Blended Learning, Section 2: Distributed Cloud Networks, slide 9
NEW QUESTION # 34
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