BL0-220 PDF Exam Material 2024 Realistic BL0-220 Dumps Questions
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Nokia BL0-220 certification exam is a computer-based exam that consists of multiple-choice questions. Candidates have two hours to complete the exam, and the passing score is 70%. BL0-220 exam fee is $125, and candidates can register for the exam through the Nokia website.
Nokia Bell Labs Distributed Cloud Networks (BL0-220) Exam is designed to test your knowledge and skills in designing and deploying advanced networking solutions with the Nokia Bell Labs Distributed Cloud Networks platform. BL0-220 exam is intended for professionals who are looking to demonstrate their proficiency in designing and deploying highly scalable and efficient cloud networking solutions.
NEW QUESTION # 22
Which of the follow are descriptions are correct regarding containers? (Select 2)
- A. No limited access to resources.
- B. Is in an isolated environment.
- C. A logical space in the host's operating system.
- D. Is a software like a VM.
Answer: B,C
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 # 23
AI/ML based operation requires which of the follow? (Select 3)
- A. Open APIs
- B. Standard Protocols
- C. Pre-defined policies
- D. Closed loop automation
Answer: A,C,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 # 24
Select the option that best completes the following sentence.
____is a key component in the Closed loop automation.
- A. Catalog Database
- B. Knowledge database
- C. Common inventory 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 # 25
What is the most critical benefit a cloud native deployment provides when deploying applications in complex and very low predictive environments?
- A. Capability
- B. Adaptability
- C. Reliability
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 # 26
Kubemetes is a:
- A. Template
- B. Orchestrator
- C. Platform
- D. Hypervisor
Answer: B
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 # 27
What are the two main options to interconnect private and public clouds? (Select 2)
- A. WAN
- B. VXLAN
- C. VPN
- D. VLAN
Answer: A,C
Explanation:
The two main options to interconnect private and public clouds are VPN and WAN. VPN stands for Virtual Private Network, which is a secure and encrypted connection between two or more networks over the public internet. VPN allows private and public clouds to communicate with each other without exposing their data or traffic to third parties. WAN stands for Wide Area Network, which is a network that spans a large geographic area, such as a country or a continent. WAN allows private and public clouds to interconnect across different regions or locations, using high-speed and high-capacity links. Both VPN and WAN provide reliable, scalable, and flexible solutions for hybrid cloud scenarios, where private and public clouds work together to deliver optimal performance and efficiency. Reference: Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Cloud Data Center Interconnect for Large Enterprises, 5G Core on cloud: go public, private or a bit of both?
NEW QUESTION # 28
Which of the following are characteristics of Cloud Native services. (Select 2)
- A. Very fast deployment
- B. Very light weight application
- C. Fixed capacity
- D. Low Scalability
Answer: A,B
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 # 29
Which of the following is the mandatory key driver to consider for Cloud RAN/vRAN deployment?
- A. Low latency
- B. Privacy
- C. High capacity
- D. Low capacity
Answer: A
Explanation:
Low latency is the mandatory key driver to consider for Cloud RAN/vRAN deployment. Cloud RAN stands for Cloud Radio Access Network, which is a network architecture that centralizes the baseband processing of multiple radio sites in a cloud platform. vRAN stands for virtualized RAN, which is a network architecture that implements the baseband processing as software functions running on virtual machines or containers in a cloud platform. Both Cloud RAN and vRAN aim to improve the performance, efficiency, and flexibility of the radio access network by leveraging cloud technologies. Low latency refers to the minimal delay between the source and the destination of a data transmission, which affects the quality of service and user experience for various applications. Low latency is a critical requirement for Cloud RAN/vRAN deployment, as it ensures the timely and reliable delivery of radio signals between the centralized cloud platform and the distributed radio sites. Low latency also enables Cloud RAN/vRAN to support new 5G use cases that demand ultra-reliable and low-latency communications, such as autonomous driving, remote surgery, and industrial automation. Reference: Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 3: Cloud Resource Planning, Section 3.2: Cloud RAN/vRAN.
Low latency is a mandatory key driver for Cloud RAN/vRAN deployment due to the stringent requirements of real-time communication and processing in radio access networks. Low latency ensures that data transmission and processing occur with minimal delay, which is crucial for supporting high-speed, reliable communication necessary in modern wireless networks, especially with the advent of 5G technologies.
NEW QUESTION # 30
In a cloud deployment, SaaS can stand for which of the following? (Select 2)
- A. Software as a Service
- B. Service as a Service
- C. Stack as a Service '
- D. Security as a Service
Answer: A,D
NEW QUESTION # 31
In public networks, what are the parts of a distributed cloud used for the 5G Core control plane. (Select 2)
- A. Metro Edge Cloud
- B. Core/Central Cloud
- C. Far Edge Cloud
- D. On-premise Edge Cloud
Answer: A,B
Explanation:
The 5G Core control plane is responsible for managing the network functions, services, and resources, such as authentication, authorization, session management, policy control, mobility management, etc.1. The 5G Core control plane can be deployed in a distributed cloud architecture, which consists of different cloud layers that have different characteristics and roles2. The Metro Edge Cloud is a cloud layer that is located near the access network, and provides low latency, high bandwidth, and local processing for the control plane functions3. The Core/Central Cloud is a cloud layer that is located in the core network, and provides high availability, scalability, and security for the control plane functions4. The distributed cloud architecture enables the 5G Core control plane to optimize the network performance, efficiency, and flexibility, and to support various use cases and applications. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 1: Cloud Ecosystem, Section 1.2: Cloud Architecture 2: Nokia Bell Labs Distributed Cloud Networks, Unit 1: Cloud Ecosystem, Section 1.3: Distributed Cloud 3: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, Section 3.2: Cloud Resource Planning for Distributed Cloud 4: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, Section 3.3: Cloud Resource Planning for Central Cloud : Nokia Bell Labs Distributed Cloud Networks, Unit 5: New Services Automation, Section 5.1: Distributed Cloud Services Automation
NEW QUESTION # 32
Which of the following best describes the networking concept of "Isolation"?
- A. It's the physical network layer.
- B. It's the virtual network layer.
- C. It restricts traffic within network.
- D. It allows each tenant to have their own network configuration.
Answer: D
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 # 33
Select the best option below to complete the following sentence.
The E2E Orchestrator for VMs is the same as_____for containers.
- A. Software as a service
- B. Infrastructure as a Service
- C. Containers as a Service
- D. Platform as a Service
Answer: C
Explanation:
Containers as a Service (CaaS) is the same as the E2E Orchestrator for VMs for containers. CaaS is a cloud service model that allows users to deploy and manage containerized applications on a cloud platform. CaaS provides the necessary infrastructure, orchestration, networking, and security for running containers. The E2E Orchestrator for VMs is a Nokia solution that provides similar capabilities for virtual machines (VMs). The E2E Orchestrator for VMs enables the creation, deployment, and management of VMs on a distributed cloud platform. It also supports network slicing, security, and automation features.
Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, slide 19 Nokia Cloud Platform, paragraph 1 Nokia Bell Labs End-to-End 5G Certification, page 4
NEW QUESTION # 34
In a cloud deployment, SaaS can stand for which of the following? (Select 2)
- A. Software as a Service
- B. Service as a Service
- C. Stack as a Service '
- D. Security as a Service
Answer: A,D
Explanation:
Security as a Service and Software as a Service are two examples of SaaS in a cloud deployment. Security as a Service is a model where security services such as firewall, antivirus, encryption, etc. are delivered over the Internet by a cloud provider1. Software as a Service is a model where software applications such as email, CRM, ERP, etc. are hosted and managed by a cloud provider and accessed by users over the Internet2. Stack as a Service and Service as a Service are not valid terms for SaaS in a cloud deployment. Stack as a Service is a typo for Stack Overflow, a popular online platform for developers3. Service as a Service is a redundant and meaningless term that does not describe any cloud service model4. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 1: Cloud Ecosystem, Section 1.3: Cloud Service Models 2: Nokia Bell Labs Distributed Cloud Networks, Unit 1: Cloud Ecosystem, Section 1.3: Cloud Service Models 3: Stack Overflow 4: What is Service as a Service (SaaS)?
SaaS within cloud computing primarily stands for Software as a Service, which delivers software applications over the internet on a subscription basis. It allows users to connect to and use cloud-based apps over the Internet, such as email, calendaring, and office tools (like Microsoft Office 365). Security as a Service (SECaaS) is an outsourcing model for security management. Typically, businesses utilize this service for functions like anti-virus software, intrusion detection, and authentication. SECaaS is also considered a type of SaaS where security services are delivered remotely via the internet. Therefore, both Software as a Service and Security as a Service are correct answers, emphasizing the diversity of services provided through the SaaS model beyond just software applications.
NEW QUESTION # 35
Security is crucial for data centers and their users.
- A. True
- B. False
Answer: A
Explanation:
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 Features 2: Data Center Security: What You Need to Know
NEW QUESTION # 36
Which one of the following requires a Network Service Descriptor defined in a catalog?
- A. Cloud infrastructure software
- B. Cloud orchestration
- C. Software defined network
- D. Cloud software platform
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 # 37
Which of the following are characteristics of traditional monolithic services. (Select 2)
- A. Fixed capacity
- B. Low scalability
- C. Very light weight application
- D. Very fast deployment
Answer: A,B
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 # 38
What event will trigger the auto-healing operation?
- A. Warning message
- B. New status
- C. Fault detection
- D. Threshold
Answer: C
Explanation:
A fault detection event will trigger the auto-healing operation. Auto-healing is a feature of cloud networks that enables the automatic recovery of resources or services from failures or errors1. Fault detection is the process of identifying and locating faults in the network using various methods such as monitoring, logging, or testing2. When a fault is detected, the auto-healing operation will initiate the appropriate actions to restore the normal functioning of the network, such as restarting, repairing, or replacing the faulty components1. Threshold, warning message, and new status are not events that trigger the auto-healing operation. Threshold is a predefined value or limit that indicates the acceptable performance or behavior of a resource or service3. Warning message is a notification or alert that informs the user or operator about a potential problem or risk in the network4. New status is a change or update in the state or condition of a resource or service, such as active, inactive, or degraded.
NEW QUESTION # 39
Which of the following are benefits of life cycle management?
- A. Life cycle management is only applicable to cloud native.
- B. All life cycle stages are clearly identified.
- C. Life cycle is short.
Answer: B
Explanation:
All life cycle stages are clearly identified. Comprehensive Explanation and Reference of Correct answer: Life cycle management is the process of managing the Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks, Unit 4: Operating Your Cloud, slide 3 Module by Module - Self Study Note Guide, DC4.1- Industry Trends in Data Center Hardware, page 16
NEW QUESTION # 40
The design of a data center manager includes which of the following? (Select 3)
- A. Appropriate tools
- B. Effective process methodology
- C. People enablement
- D. Cost of tools
Answer: A,B,C
Explanation:
A data center manager is responsible for overseeing the operation, maintenance, and security of a data center, as well as planning and implementing changes and improvements1. To perform these tasks, a data center manager needs to have appropriate tools that can monitor, control, and automate the data center resources, such as servers, storage, network, power, cooling, etc.2. A data center manager also needs to enable people, such as data center staff, engineers, technicians, and customers, to access, use, and manage the data center services and applications3. Moreover, a data center manager needs to follow an effective process methodology that can ensure the quality, efficiency, and reliability of the data center operations, such as ITIL, DevOps, Agile, etc... Reference: 1: Data Center Manager: Roles, Responsibilities, and Skills, Introduction 2: Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, Section 4.1: Industry Trends in Data Center Hardware 3: Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, Section 4.2: Data Center Operations : Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, Section 4.3: Data Center Management Methodologies
NEW QUESTION # 41
Select the best option below to complete the following sentence.
Different paths for a NF providing Cloud Resilience are defined in a_____?
- A. Network Service Descriptor
- B. NFV Orchestrator configuration
- C. NS Orchestrator configuration
- D. Network Function template
Answer: A
Explanation:
Different paths for a NF providing Cloud Resilience are defined in a Network Service Descriptor. A Network Service Descriptor (NSD) is a document that describes the topology, configuration, and requirements of a network service. It specifies the network functions (NFs) that compose the service, the virtual links that connect them, and the forwarding graphs that define the traffic flows between them1. A NSD also defines the resilience policies for each NF, such as the number of instances, the scaling triggers, the fault management actions, and the alternative paths in case of failures2. A Network Function template, an NS Orchestrator configuration, and an NFV Orchestrator configuration are not the correct options to complete the sentence. A Network Function template is a document that describes the characteristics and requirements of a single network function, such as the virtualization environment, the resources, the interfaces, and the dependencies1. An NS Orchestrator configuration is a set of parameters that control the behavior and operation of the NS Orchestrator, which is a component that manages the lifecycle of network services3. An NFV Orchestrator configuration is a set of parameters that control the behavior and operation of the NFV Orchestrator, which is a component that coordinates the allocation and release of resources for network services3. Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, Section 3.2: Network Function 2: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, Section 3.3: Network Service Descriptor Role 3: Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, Section 4.1: Industry Trends in Data Center Hardware
NEW QUESTION # 42
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