Questions and Answers
What is cloud computing defined as?
Cloud computing is a virtualization-based technology that allows us to create, configure, and customize applications via an internet connection.
Which types of cloud services are mentioned in the content?
What is IaaS (Infrastructure as a Service)?
It is a computing infrastructure managed over the internet.
What is PaaS (Platform as a Service)?
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Define SaaS (Software as a Service).
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What is the primary characteristic of a Metropolitan Area Network (MAN)?
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What is an example of a Personal Area Network (PAN)?
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What is the main difference between Client-Server and Peer-to-Peer networks?
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What is the purpose of an Intranet?
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What is a characteristic of a Wide Area Network (WAN)?
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What is an example of a Local Area Network (LAN)?
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What is a Hybrid Network a combination of?
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What is the primary purpose of the Internet?
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Study Notes
What is Cloud Computing?
- Cloud computing is a virtualization-based technology that enables the creation, configuration, and customization of applications via an internet connection.
- It can provide services over public and private networks, including WAN, LAN, or VPN.
Definition of Cloud Computing
- Refers to the manipulation, configuration, and access of hardware and software resources remotely.
- Offers online data storage, infrastructure, and application services.
Types of Cloud Services
Infrastructure as a Service (IaaS)
- A computing infrastructure managed over the internet.
- Provides a managed computing infrastructure.
Platform as a Service (PaaS)
- A cloud computing platform created for programmers to develop, test, run, and manage applications.
- Enables developers to create and deploy applications without managing the underlying infrastructure.
Software as a Service (SaaS)
- Also known as "on-demand software".
- A software hosted by a cloud service provider, accessible via an internet connection and web browser.
- Users can access and use applications without managing the underlying infrastructure.
Network Types by Scale
- Personal Area Network (PAN): connects devices like smartphones, tablets, and laptops within an individual's workspace, with a range of a few meters, using technologies like Bluetooth and Infrared.
- Local Area Network (LAN): connects computers within a limited area, such as a school, office, or home, with a range of a building or small campus, using technologies like Ethernet and Wi-Fi.
- Metropolitan Area Network (MAN): connects multiple LANs within a metropolitan area, with a range of a city or large campus, using technologies like city-wide Wi-Fi and cable TV networks.
- Wide Area Network (WAN): connects multiple LANs and MANs across large geographical areas, with a range of a country or across continents, using technologies like the Internet.
Network Types by Architecture
- Client-Server Network: a centralized architecture where a server provides resources and services to client machines, used in applications like web services and email servers.
- Peer-to-Peer Network (P2P): a decentralized architecture where all devices (peers) share resources and communicate directly, used in applications like file sharing and blockchain networks.
- Hybrid Network: a combination of client-server and P2P architectures, used in enterprise networks.
Network Types by Usage
- Intranet: a private network accessible only to an organization's members, used in internal corporate networks.
- Extranet: a private network that allows access to partners, vendors, and suppliers, used in supply chain management systems.
- Internet: a global network connecting millions of private, public, academic, business, and government networks, used in the World Wide Web.
Network Types by Transmission Technology
- Wired Networks: use physical cables (e.g., Ethernet cables, fiber optics) for transmission, providing reliable and high-speed data transfer.
- Wireless Networks: use radio waves and microwaves for transmission, providing mobile and flexible connectivity in technologies like Wi-Fi and cellular networks.
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Description
Learn the basics of cloud computing, a technology that enables virtualization, online data storage, and infrastructure over public and private networks.