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优质回答A computer network is a collection of interconnected devices, such as computers, servers, routers, switches, and other network devices, that are linked together to facilitate communication and data sharing. These devices are connected through wired or wireless connections, allowing them to communicate and exchange information with each other.Computer networks can be classified into different types based on their size, geographical area coverage, and purpose. Some common types of computer networks include:1. Local Area Network (LAN): A LAN is a network that covers a small area, such as a home, office, or building. It is typically used for connecting devices within a close proximity to each other.2. Wide Area Network (WAN): A WAN is a network that covers a large geographical area, such as multiple buildings, cities, or even countries. It is used to connect devices that are far apart from each other.3. Metropolitan Area Network (MAN): A MAN is a network that covers a larger area than a LAN but smaller than a WAN. It is typically used to connect devices within a city or metropolitan area.4. Campus Area Network (CAN): A CAN is a network that covers a university campus or a large corporate campus. It is used to connect multiple buildings or departments within a campus.5. Personal Area Network (PAN): A PAN is a network that is used for connecting devices within a person's personal space, such as a smartphone, laptop, and other personal devices.6. Wireless Local Area Network (WLAN): A WLAN is a type of LAN that uses wireless connections, such as Wi-Fi, to connect devices within a limited area.7. Storage Area Network (SAN): A SAN is a specialized network that is used for connecting storage devices, such as disk arrays and tape libraries, to servers.Computer networks are essential for sharing resources, such as files, printers, and internet access, and for enabling communication between devices. They can be either private networks, which are used within an organization or a home, or public networks, which are used to connect to the internet.
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