nokia bl0-220 practice test

Nokia Bell Labs Distributed Cloud Networks

Last exam update: Nov 18 ,2025
Page 1 out of 4. Viewing questions 1-15 out of 60

Question 1

What are the available options to interconnect private Datacenters? (Select 2)

  • A. VPN
  • B. Backbone
  • C. VLAN
  • D. VIP
Mark Question:
Answer:

A, B


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

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Question 2

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

  • A. No OPEX
  • B. Mixed with Public Cloud
  • C. High CAPEX
  • D. Software as a Service
  • E. Full Control
Mark Question:
Answer:

C, E


Explanation:
The properties related to a private cloud are high CAPEX and full control. CAPEX stands for capital
expenditure, which is the money spent on acquiring or upgrading physical assets such as servers,
storage, and network equipment. A private cloud requires high CAPEX because the cloud owner has
to invest in building and maintaining the cloud infrastructure. Full control means that the cloud
owner has the exclusive authority and responsibility over the cloud resources, security, and
operations. A private cloud offers full control because the cloud owner can customize the cloud
according to their specific needs and preferences, and can ensure the privacy and compliance of their
data and applications. Reference:
Nokia Cloud Platform
,
Module by Module - Self Study Note Guide

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Question 3

A group of small services combine to deliver user specific service.

  • A. True
  • B. False
Mark Question:
Answer:

A


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

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Question 4

Which of the following are Software as a Service? (Select 2)

  • A. Database-as-a-Service
  • B. Infrastructure-as-a-Service
  • C. Artificial Intelligence-as-a-Service
  • D. Platform -as-a-Service
Mark Question:
Answer:

A, D


Explanation:
Software as a Service (SaaS) is a cloud computing offering that provides users with access to a
vendor's cloud-based software. Users do not install applications on their local devices. Instead, the
applications reside on a remote cloud network accessed through the web or an API. Within this
context, Database-as-a-Service (DBaaS) is considered a form of SaaS, where the service provider
manages the database's installation, maintenance, backup, and scaling needs on behalf of the
customer. Platform-as-a-Service (PaaS) provides a platform allowing customers to develop, run, and
manage applications without dealing with the complexity of building and maintaining the
infrastructure typically associated with developing and launching an app. PaaS can include various
software components, including database management systems, and thus can be considered a
subset of SaaS.

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Question 5

What does OCP stands for?

  • A. Open Data Center Platform
  • B. Open Compute Project
  • C. Operations and Control
  • D. Open Circuit Platform
Mark Question:
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 Page 2
:
Nokia Cloud Platform
,

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Question 6

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
Mark Question:
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.

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Question 7

What are the three key drivers required for video-based service in on-premise cloud? (Select 3)

  • A. Convenience
  • B. Latency
  • C. Privacy
  • D. Capacity
Mark Question:
Answer:

B, C, D


Explanation:
Latency, Privacy and Capacity are the three key drivers required for video-based service in on-
premise cloud. Latency refers to the delay between the source and the destination of a video stream,
which affects the quality of experience for the end-users. Privacy refers to the protection of the video
content and the user data from unauthorized access or leakage. Capacity refers to the ability of the
network and the cloud to handle the high bandwidth and storage demands of video applications. On-
premise cloud is a cloud deployment model where the cloud infrastructure is located within the
enterprise premises, and is managed by the enterprise or a third-party service provider. On-premise
cloud can offer lower latency, higher privacy and greater capacity for video-based service than public
cloud, which is located outside the enterprise premises and is shared by multiple
tenants. Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks
, Unit
2: Cloud Technologies and Features, Section 2.3: Cloud Deployment Models.

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Question 8

Which of the following are benefits of life cycle management?

  • A. Life cycle is short.
  • B. Life cycle management is only applicable to cloud native.
  • C. All life cycle stages are clearly identified.
Mark Question:
Answer:

C


Explanation:
All life cycle stages are clearly identified. Comprehensive Explanation and Reference of Correct
Answer: Life cycle management is the process of managing the
Explanation:development, deployment, operation, and decommissioning of cloud applications and
services. It involves defining the requirements, design, testing, deployment, monitoring, scaling,
updating, and retiring of cloud resources. One of the benefits of life cycle management is that it
provides clarity and visibility into the different stages of the cloud service, from inception to
termination. This helps to ensure quality, efficiency, security, and reliability of the cloud service, as
well as to optimize the use of resources and reduce costs.
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

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Question 9

In a cloud deployment, SaaS can stand for which of the following? (Select 2)

  • A. Stack as a Service '
  • B. Security as a Service
  • C. Service as a Service
  • D. Software as a Service
Mark Question:
Answer:

B, 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.

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Question 10

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. constraints
  • B. problems
  • C. operability
  • D. benefits
Mark Question:
Answer:

D


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

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Question 11

Which of the following are AI hardware solutions? (Select 2)

  • A. DataLake
  • B. Habana
  • C. EyeQ
  • D. Sparks
Mark Question:
Answer:

B, C


Explanation:
Habana and EyeQ are two examples of AI hardware solutions that are designed to accelerate deep
learning and computer vision applications.
Habana is a company that produces AI processors for both
training and inference workloads1
.
EyeQ is a family of system-on-chips (SoCs) developed by
Mobileye for advanced driver-assistance systems (ADAS) and autonomous driving2
. DataLake and
Sparks are not AI hardware solutions.
DataLake is a term that refers to a large-scale data storage
architecture that can store structured, semi-structured, and unstructured data from various
sources3
.
Sparks is a misspelling of Spark, which is an open-source distributed computing framework
for large-scale data processing and machine learning4. Reference: 1: Nokia Bell Labs Distributed
Cloud Networks, Unit 4: AI/ML in Cloud Networks, Section 4.2: AI Hardware 2: Nokia Bell Labs
Distributed Cloud Networks, Unit 4: AI/ML in Cloud Networks, Section 4.2: AI Hardware 3: Nokia Bell
Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Section 2.4: Cloud
Storage 4
: Nokia Bell Labs Distributed Cloud Networks, Unit 4: AI/ML in Cloud Networks, Section 4.3:
AI Software

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Question 12

Which of the following are characteristics of traditional monolithic services. (Select 2)

  • A. Low scalability
  • B. Very light weight application
  • C. Fixed capacity
  • D. Very fast deployment
Mark Question:
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]

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Question 13

Does the technology layer function support automated service delivery?

  • A. Yes
  • B. No
Mark Question:
Answer:

A


Explanation:
The technology layer function supports automated service delivery by providing the necessary tools
and mechanisms to orchestrate, monitor, and optimize the cloud resources and services. The
technology layer function consists of four sub-functions: cloud management, cloud orchestration,
cloud automation, and cloud analytics. These sub-functions work together to enable the efficient and
flexible operation of the cloud ecosystem.
Reference:
Nokia Bell Labs 5G Professional Certification - Distributed Cloud Networks | Nokia Distributed Cloud
Networks
, Unit 2: Cloud Technologies and Features, slide 11
Nokia Bell Labs 5G Certification Program - Courses | Nokia
, Distributed Cloud Networks, Unit 2:
Cloud Technologies and Features

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Question 14

It is possible to run a cloud solution in a Single Node.

  • A. True
  • B. False
Mark Question:
Answer:

B


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.
Reference: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 5 2
:
Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 6

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Question 15

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

  • A. For users, there is no cloud infrastructure operation
  • B. An In-house solution
  • C. Easy scaling
  • D. O&A requirement
  • E. Very complex management
Mark Question:
Answer:

A, C,


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

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