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7 Free Questions Last reviewed October 28, 2026 Prepared & Reviewed by the ValidExamDumps Editorial Team

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Exam Facts

Nokia BL0-220 Exam Details

Key details for this exam, checked against the published exam outline

Exam Code: BL0-220
Full Name: Nokia Bell Labs Distributed Cloud Networks
Issuing Body: Nokia
Question Format (Our Bank): Multiple Choice
Full Question Set: 60 questions Get All Questions

Practice Questions

Free BL0-220 Practice Questions

Each question shows the correct answer and an explanation of why it is right

ValidExamDumps Editorial Team Every question and its answer is checked by our BL0-220 exam preparation team, who also write the explanation shown with each one. How we research and review these pages

Question 1 Domain 1 DCN Concepts and Use Cases

What does OCP stands for?

AOpen Data Center Platform

BOpen Compute Project

COperations and Control

DOpen Circuit Platform

Correct Answer B

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 Page2:Nokia Cloud Platform,

Question 2 Domain 5 Edge Computing

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.

Aconstraints

Bproblems

Coperability

Dbenefits

Correct Answer D

Explanation

The most appropriate word to complete the sentence isbenefits.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 72:Nokia Bell Labs 5G Certification Program - Blended Learning, Section 2: Distributed Cloud Networks, slide 9

Question 3 Domain 1 DCN Concepts and Use Cases

Kubemetes is a:

APlatform

BOrchestrator

CTemplate

DHypervisor

Correct 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 Containerization2:What is Kubernetes? | Kubernetes, Overview3:Kubernetes - an overview | ScienceDirect Topics, Overview

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Question 4 Domain 3 Containerization and Orchestration

Which of the following statements best describes cloud native operations?

ACloud native is only operational by AI.

BCloud native relies only on network automation.

CCloud native provides operation adaptability.

DCloud native design limits scalability.

Correct Answer C

Explanation

The statement that best describes cloud native operations iscloud native provides operation adaptability.Cloud native operations are based on the principles of agility, resilience, and automation, which enable the cloud to adapt to changing demands and conditions12. Cloud native is not only operational by AI, nor does it rely only on network automation.AI and automation are tools that enhance the cloud native operations, but they are not the only factors that define them12.Cloud native design does not limit scalability, but rather enables it by using microservices, containers, and orchestration12.Reference:1:Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, slide 62:Nokia Bell Labs 5G Certification Program - Blended Learning, Section 2: Distributed Cloud Networks, slide 16

Question 5 Domain 1 DCN Concepts and Use Cases

Which of the following techniques provide the benefit of faster deployment? (Select 2)

AService automation

BManual service deployment

CNetwork automation

DManual configuration

Correct Answer A, C

Explanation

Service automation and network automation are two techniques that provide the benefit of faster deployment.Service automation is the process of using software tools and predefined workflows to create, configure, and manage cloud services without human intervention1.Network automation is the process of using software tools and predefined policies to orchestrate, monitor, and optimize network resources and functions without human intervention2.Both techniques can reduce the time, cost, and errors associated with manual service deployment and configuration, and enable faster and more agile service delivery and network operations3.Manual service deployment and manual configuration are not techniques that provide the benefit of faster deployment, as they require human intervention and are prone to human errors, delays, and inefficiencies4.Reference:1: Nokia Bell Labs Distributed Cloud Networks, Unit 5: New Services Automation, Section 5.2: Service Automation2: Nokia Bell Labs Distributed Cloud Networks, Unit 4: Operating Your Cloud, Section 4.2: Network Automation3:Nokia, A1 and Microsoft deploy industry's first 5G edge cloud network slicing solution for enterprises4: Nokia Bell Labs Distributed Cloud Networks, Unit 5: New Services Automation, Section 5.3: Service Automation Benefits and Challenges

Question 6 Domain 2 DCN Architecture and Components

Which of the following are properties related to a public cloud? (Select 2)

AFor users, there is no cloud infrastructure operation

BAn In-house solution

CEasy scaling

DO&A requirement

EVery complex management

Correct Answer A, C

Explanation

The properties related to a public cloud arefor users, there is no cloud infrastructure operationandeasy 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 Types2:Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.1: Cloud Computing3:Nokia and DISH to deploy first 5G standalone core network in the public cloud with AWS, Press Release

Question 7 Domain 6 Security in DCN

Which of the following best describes the networking concept of "Underlay"?

AIt's the physical network layer.

BIt's the virtual network layer.

CIt allows each tenant to have their own network configuration.

DIt restricts traffic within network.

Correct Answer A

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 Networks2:Module by Module - Self Study Note Guide, DC2.2-- Cloud Options3:Underlay Network - an overview | ScienceDirect Topics, Overview

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Study Guide

What the Nokia BL0-220 Exam Covers

Exam domains verified against the Official Nokia BL0-220 exam guide, last checked October 2026.

Domain 1 DCN Concepts and Use Cases

Understand the business drivers and technical foundations of distributed cloud networks. Learn how DCN technology addresses real-world deployment challenges across industries and telecommunications operators.

Sample questions from this domain above Q1 Q3 Q5

Domain 2 DCN Architecture and Components

Master the building blocks of distributed cloud infrastructure including cloud platforms, edge nodes, orchestration systems and network fabrics. Understand how these components interact to create a cohesive system.

Sample question from this domain above Q6

Domain 3 Containerization and Orchestration

Learn containerization principles and tools like Docker for packaging applications. Study container orchestration with Kubernetes and how to manage application lifecycle in distributed environments.

Sample question from this domain above Q4

Domain 4 Network Slicing

Examine how network slicing creates isolated virtual networks from shared physical infrastructure. Study resource allocation, tenant isolation and the practical benefits of slicing in 5G deployments.

Domain 5 Edge Computing

Explore edge computing architecture and its role in reducing latency and distributing processing closer to users. Understand the placement decisions and operational benefits of moving computation to the network edge.

Sample question from this domain above Q2

Domain 6 Security in DCN

Address security challenges specific to distributed cloud environments including access control mechanisms and data encryption. Learn threat detection and mitigation strategies for protecting multi-tenant cloud infrastructure.

Sample question from this domain above Q7

FAQ

BL0-220 Exam FAQ

Common questions about the exam itself

What background do I need before taking the BL0-220 exam?

The official Nokia exam page does not state formal prerequisites for BL0-220. Most candidates have experience in networking, cloud technologies or telecommunications, though the exam material is designed to teach DCN concepts from foundational principles. Check with Nokia training to confirm any recommended preparation before registering.

How many questions are on the BL0-220 exam and what is the time limit?

Official exam duration and question count for BL0-220 are not published on Nokia's current exam page. Contact Nokia training or your exam administrator through Pearson VUE to confirm these details before your test date.

Is BL0-220 part of a larger 5G certification track, and how does it fit in?

BL0-220 is a professional-level domain exam within the Nokia Bell Labs 5G Certification program. It builds on the Associate-level foundation and focuses specifically on distributed cloud networks as one of several professional specializations. You can pursue professional certifications in multiple domains to build a broader credential.

What is the passing score for BL0-220?

The passing score for BL0-220 is not published on publicly available Nokia sources. Pearson VUE will provide the score requirements when you register for the exam, and your result will be reported after you complete it.

How long does the Nokia Bell Labs 5G certification stay valid?

Nokia does not publish a standard validity period for BL0-220 on its public exam pages. Contact Nokia directly to confirm how long your certification remains current and whether renewal or recertification is required.

Can I take BL0-220 online or only at a test centre?

BL0-220 is administered by Pearson VUE. Pearson VUE offers both online proctored and in-centre testing options for Nokia exams. When registering through your Nokia student portal, you can select your preferred delivery method based on what is available in your location.

What job roles is BL0-220 designed for?

BL0-220 targets network engineers, cloud architects and telecommunications professionals involved in designing, deploying and managing distributed cloud infrastructure. The exam validates expertise needed to support 5G and modern telecom network architectures that use edge computing and containerized services.

How long should I prepare for the BL0-220 exam?

Preparation time varies based on your background in cloud, networking and containerization. Most candidates with telecom or cloud experience complete preparation in four to eight weeks. Those new to distributed cloud concepts may need longer. The recommended Nokia course covers the material in structured units.

What makes Security in DCN the hardest section of BL0-220?

Security in DCN requires understanding access control, encryption, multi-tenant isolation and threat detection in complex distributed environments. Unlike traditional network security, DCN security spans application-level and infrastructure-level concerns across edge nodes and cloud platforms, making it conceptually dense.

Can I retake BL0-220 if I do not pass?

Retake policies are managed by Pearson VUE and Nokia. You can typically register for the exam again, but there may be a waiting period between attempts. Review your exam results notification and contact Nokia support or Pearson VUE to understand retake costs and scheduling rules.

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