Nokia Updated BL0-220 Exam Questions and Answers by fraser

 Your apps need cloud resources which are allocated and then provisioned. Allocation is the process of assigning cloud resources to a specific app or service, based on the requirements and availability1. Provisioning is the process of configuring and activating the allocated cloud resources, making them ready to use by the app or service2. Commissioning, instantiation, starting, and distribution are not the correct terms to complete the sentence. Commissioning is the process of testing and verifying the cloud resources before they are allocated3. Instantiation is the process of creating an instance of an app or service, which is a running copy of the app or service that uses the provisioned cloud resources4. Starting is the process of launching an instance of an app or service, which can be done manually or automatically. Distribution is the process of spreading the cloud resources across different locations or domains, to achieve scalability, redundancy, or performance. Termination is the process of deleting or releasing the cloud resources that are no longer needed by the app or service.

References: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 8 2: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 9 3: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 10 4: Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 11 : Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 12 : Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 13 : Nokia Bell Labs Distributed Cloud Networks, Unit 3: Cloud Resource Planning, slide 14

Microservices are a design principle for cloud-native applications, where each application is composed of a set of small, independent, and loosely coupled services that communicate with each other through well-defined interfaces1. Microservices have the following characteristics2:

• Microservices are chained in order to build an application, meaning that they are connected by a network and exchange messages or data to perform a specific function or task.
• Microservices are differentiated by function, meaning that each microservice has a single responsibility and performs a distinct function within the application.
• Microservices are derived from monolithic applications, meaning that they are created by breaking down a large and complex application into smaller and simpler pieces that can be developed, deployed, and scaled independently.
• Microservices are scalable and resilient, meaning that they can handle variable workloads and recover from failures without affecting the whole application.

Therefore, the correct statements are A and C, while B and D are incorrect. References: 1: Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Topic: Microservices and Containerization 2: Module by Module - Self Study Note Guide, DC2.4– Microservices and Containerization

Cloud resources are made available to customers as virtualized resources. Virtualization is the process of creating a software-based representation of a physical resource, such as a server, a storage device, or a network device. Virtualization allows multiple customers to share the same physical resource, while isolating their data and applications from each other. Virtualization also enables customers to access cloud resources on demand, without having to worry about the underlying hardware or infrastructure. Virtualization is one of the key technologies that enable cloud computing and its benefits. References: Nokia Cloud Platform, Module by Module - Self Study Note Guide