A computer network is a collection of interconnected computers and devices that can communicate with each other and share resources. These connections enable data exchange, resource sharing, and communication among the devices within the network. Computer networks can vary in size and complexity, ranging from small systems involving just a few devices to vast global networks like the internet.
Examples of Computer Networks
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Local Area Network (LAN):
- Example: A home network where multiple devices such as laptops, smartphones, and printers are connected to a single router. Here, devices can share files, stream media, and access the internet through a single broadband connection.
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Wide Area Network (WAN):
- Example: The internet is the largest WAN, connecting millions of computers and devices worldwide. Businesses often use WANs to connect their offices in different geographical locations, allowing employees to access centralized resources.
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Metropolitan Area Network (MAN):
- Example: A university network that connects several campuses within a city. This type of network allows students and staff to access services and resources across various locations in the metropolitan area.
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Wireless Network (Wi-Fi):
- Example: A coffee shop offering Wi-Fi for customers. Here, devices like smartphones, tablets, and laptops can connect wirelessly to the network to browse the internet without physical cables.
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Virtual Private Network (VPN):
- Example: A remote work setup where employees connect to a corporate network securely over the internet. A VPN encrypts the data transmitted, ensuring privacy while accessing company resources from different locations.
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Peer-to-Peer Network (P2P):
- Example: File-sharing networks like BitTorrent, where individual computers (peers) can share files directly with one another without the need for a central server.
Each of these examples illustrates how computer networks facilitate communication and resource sharing in various contexts, from personal use to global interconnectivity.