Question 1

Which of the following are benefits of life cycle management?

Accepted Answer

C

Explanation: Life cycle management (LCM) is a structured approach to managing a system, product, or application from its conception through its end-of-life. A fundamental benefit of this methodology is the clear identification and definition of all distinct stages (e.g., design, deployment, operations, maintenance, retirement). This clarity provides predictability, enhances control, and allows for better planning, resource allocation, and risk management. By formalizing the stages, organizations can implement standardized procedures and automation, which is crucial for managing complex systems like 5G network functions. This structured view ensures all stakeholders understand the status, requirements, and transitions between phases.

Question 2

Which of the following contains the configuration of a VNF or CNF?

Accepted Answer

B

Explanation: The configuration of a Virtual Network Function (VNF) or a Cloud-native Network Function (CNF) is defined declaratively in a template file. These files specify the function's resources, networking, storage, and initial parameters. The most common formats for these templates are YAML (YAML Ain't Markup Language) and, to a lesser extent, XML (eXtensible Markup Language). For VNFs, standards like ETSI NFV MANO use TOSCA Simple Profile, which is written in YAML. For CNFs, which are container-based, configurations are defined using Kubernetes manifests or Helm charts, both of which are predominantly written in YAML.

Question 3

Which of the following statements are correct regarding the characteristics of microservices? (Select 2)

Accepted Answer

A, C

Explanation: Microservice architecture is an approach where a single application is developed as a suite of small, independent services. Each service runs in its own process and communicates with others, often through HTTP APIs. This decomposition of a large, monolithic application into smaller, manageable pieces is a core principle (C). To fulfill a business requirement, these individual microservices often need to collaborate. This collaboration can be viewed as a "chain" or sequence of calls between services, where one service invokes another to complete a larger workflow (A).

Question 4

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

Accepted Answer

A

Explanation: The statement accurately describes a microservices architecture, which is a foundational principle of the 5G Service-Based Architecture (SBA) covered in the NOKIA BL0 220 curriculum. In this model, a large application or system is decomposed into a collection of smaller, loosely coupled, and independently deployable services. These services communicate with each other, typically via APIs, to perform complex functions and deliver a complete, user-specific service. The 5G Core Network Functions (e.g., AMF, SMF, UPF) are implemented as cloud-native microservices that collaborate to provide end-to-end connectivity and services for users.

Question 5

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

Accepted Answer

C, E

Explanation: A private cloud is a cloud computing environment dedicated to a single organization. A key characteristic is the significant upfront investment in hardware, software, and infrastructure, which translates to a High Capital Expenditure (CAPEX). In return for this investment, the organization gains Full Control over its environment, including hardware, security policies, and data governance. This level of control is a primary driver for adopting a private cloud, especially for organizations with strict compliance and security requirements.

Question 6

Select the best option below to complete the following sentence. Your apps need cloud resources which are______and then__

Accepted Answer

B

Explanation: The standard lifecycle for making cloud resources available to an application involves two primary, sequential steps. First, the cloud management system reserves the necessary compute, storage, and network resources from the underlying physical infrastructure pool for a specific tenant or application; this is allocation. Following this, the system sets up and configures these raw resources with the required operating systems, software stacks, and application-specific configurations to make them operational. This second step is known as provisioning. This sequence ensures resources are secured before they are configured for use.

Question 7

Network Function Management provides: (Select 2)

Accepted Answer

A, C

Explanation: Network Function Management, as implemented in modern platforms like Nokia's Network Services Platform (NSP), provides a centralized and consistent management interface. This "single pane of glass" approach (C) is a core benefit, simplifying operations across complex, multi-domain networks. This unified control is the foundation for automating the lifecycle of network services. A primary use case for this capability in 5G networks is the provisioning and assurance of end-to-end network slices. These slices are logical, self-contained networks tailored for specific customers or applications, such as different companies requiring unique service level agreements (A).

Question 8

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

Accepted Answer

A, B

Explanation: Data Center Interconnect (DCI) refers to the technology used to connect two or more geographically distinct data centers. A Virtual Private Network (VPN), such as an IPsec or MPLS VPN, creates a secure, logical network over a shared or public infrastructure like the internet, providing a common method for DCI. A private backbone is a dedicated, high-capacity network (e.g., using dark fiber or DWDM) built or leased by an organization. It offers high performance, security, and reliability, making it a primary option for interconnecting critical data center sites.

Question 9

Select the option that best completes the following sentence. ____is a key component in the Closed loop automation.

Accepted Answer

A

Explanation: Closed-loop automation functions on a continuous cycle of monitoring, analyzing, and executing corrective actions without human intervention. A Policy Database is a key component as it stores the predefined rules, thresholds, and desired-state configurations. When the system analyzes monitored data and detects a deviation, it consults the policy database to determine the appropriate automated response. This makes policy the core logic engine that guides the decision-making process within the automation loop, ensuring the network self-corrects according to established operational goals.

Question 10

Select the best option below to complete the following sentence. The E2E Orchestrator for VMs is the same as_____for containers.

Accepted Answer

B

Explanation: An End-to-End (E2E) Orchestrator provides comprehensive lifecycle management, automation, and coordination for services running on Virtual Machines (VMs), particularly in the context of Network Function Virtualization (NFV). This includes instantiation, scaling, monitoring, and healing of Virtual Network Functions (VNFs). Containers as a Service (CaaS) provides the direct parallel for the container ecosystem. CaaS is a cloud service model that allows users to manage and deploy containers, applications, and clusters through a container-based virtualization platform. It abstracts the underlying infrastructure and provides an orchestration engine (like Kubernetes) to automate the lifecycle management of containerized applications, making it the functional equivalent of a VM orchestrator.

Question 11

The design of a data center manager includes which of the following? (Select 3)

Accepted Answer

B, C, D

Explanation: The design of a comprehensive data center manager is based on the industry-standard IT management framework of People, Process, and Technology. This holistic approach ensures that the management system is not only technically sound but also operationally effective and sustainable. "Appropriate tools" represents the Technology pillar, "Effective process methodology" represents the Process pillar, and "People enablement" (which includes skills, training, and roles) represents the People pillar. A successful design must integrate all three components.

Question 12

The ETSI MANO Model operational stack is defined as?

Accepted Answer

B

Explanation: The ETSI (European Telecommunications Standards Institute) NFV MANO (Management and Orchestration) architectural framework is structured in a hierarchical stack. At the highest level is the NFV Orchestrator (NFVO), which is responsible for the overall lifecycle management of network services. The middle layer consists of the VNF Manager (VNFM), which manages the lifecycle of individual Virtual Network Functions (VNFs). The lowest layer is the Virtualized Infrastructure Manager (VIM), which controls and manages the NFV Infrastructure (NFVI) resources, including compute, storage, and network. This layered model separates service-level orchestration from function-level management and underlying resource control.

Question 13

Security is crucial for data centers and their users.

Accepted Answer

A

Explanation: Security is a foundational and non-negotiable aspect of data center operations. Data centers are the central repositories for critical infrastructure, sensitive corporate data, and personal user information. A robust security posture is essential to protect against unauthorized access, data breaches, and service disruptions. It ensures the confidentiality, integrity, and availability (CIA triad) of data and services, which is paramount for maintaining business continuity, regulatory compliance, and user trust. A failure in security can lead to catastrophic financial losses, reputational damage, and legal liabilities for both the data center operator and its users.

Question 14

In public networks, what are the parts of a distributed cloud used for the 5G Core control plane. (Select 2)

Accepted Answer

A, B

Explanation: The 5G Core architecture is designed for a distributed cloud environment, allowing network functions to be placed optimally. The control plane functions are typically split between two main locations. The Core/Central Cloud hosts functions that require a centralized, network-wide view, such as the Unified Data Management (UDM) and Policy Control Function (PCF). The Metro Edge Cloud (or regional cloud) is used to deploy control plane functions like the Access and Mobility Management Function (AMF) and Session Management Function (SMF). Placing them closer to the radio access network reduces signaling latency and improves responsiveness for session and mobility management within a specific geographic area.

Question 15

Which of the following best describes the Management Plane?

Accepted Answer

B

Explanation: The Management Plane is the logical plane that provides the interfaces for network administration. It encompasses the protocols and processes used to configure, monitor, and manage network devices. This includes functions like setting up device parameters via a Command-Line Interface (CLI), monitoring device health with the Simple Network Management Protocol (SNMP), or automating configurations with NETCONF. It is the mechanism through which human operators or management systems exert administrative control over the network infrastructure, separate from the automated control logic of the Control Plane and the traffic forwarding of the Data Plane.

Free Nokia BL0-220 Actual Exam Questions