Microsoft Certified: Azure Fundamentals Practice Questions: Cloud Concepts Domain

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Explanation: Virtualization is a core technology in cloud computing that abstracts and pools physical resources, allowing for flexible and efficient use of those resources. It enables multiple virtual machines to run on a single physical machine, optimizing resource utilization. It does not provide physical hardware, manage network traffic, or ensure data encryption.

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Explanation: 'Pay-as-you-go' refers to a billing model in cloud computing where users pay only for the services they use, allowing for cost efficiency and flexibility. Option A is incorrect as it implies a subscription model. Option C is incorrect as it suggests fixed costs. Option D is incorrect as cloud services generally do not offer lifetime access.

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Explanation: Cloud computing offers scalability and flexibility, allowing businesses to adjust resources as needed without significant capital investment. This contrasts with traditional IT infrastructure, which often requires substantial upfront costs and ongoing maintenance. Options A, C, and D are incorrect because cloud computing typically reduces hardware costs, provides global access, and lowers initial capital expenses.

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Explanation: One of the primary benefits of cloud computing is the ability to scale resources up and down based on demand. This flexibility allows businesses to efficiently manage costs and resources. Option A is incorrect because data storage is not unlimited and incurs costs. Option C is incorrect as 100% uptime is not guaranteed. Option D is incorrect as technical support may incur additional costs.

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Explanation: A hybrid cloud combines on-premises infrastructure with public cloud services, allowing data and applications to be shared between them. This model provides flexibility and more deployment options. Option A describes a private cloud, C describes a community cloud, and D describes a public cloud.

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Explanation: Google App Engine is an example of a Platform as a Service (PaaS), providing a platform allowing customers to develop, run, and manage applications without dealing with the infrastructure. Option A is an example of Infrastructure as a Service (IaaS). Option B is a cloud storage service. Option D is a file hosting service.

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Explanation: Platform as a Service (PaaS) allows users to deploy and manage their own applications while the cloud provider manages the underlying infrastructure, including servers, storage, and networking. IaaS provides more control over the infrastructure, SaaS delivers fully managed applications, and NaaS is not a standard cloud service model.

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Explanation: Infrastructure as a Service (IaaS) provides the highest level of control, allowing users to manage virtual machines, storage, and networks. SaaS offers the least control, as the provider manages the entire application. PaaS offers more control than SaaS but less than IaaS, as it allows users to manage applications and data but not the underlying infrastructure. DBaaS is a specialized form of PaaS focused on database management.

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Explanation: Scalability on demand is a primary benefit of cloud computing, allowing businesses to quickly adjust resources based on their current needs. This flexibility can lead to cost savings and improved efficiency. Increased hardware costs, limited geographical reach, and fixed capacity are not benefits of cloud computing.

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Explanation: A Service Level Agreement (SLA) specifies the expected level of service and performance, including uptime, support response times, and other performance metrics. Option A is incorrect as SLAs do not detail technical specifications. Option B is incorrect as legal terms are covered in other agreements. Option D is incorrect as pricing is not the primary focus of an SLA.