computer science - the study of computers, focusing on their theory design, development, and application to solve problems and create new technologies. , LAN-Local Area Network - a computer network that connects devices like computers, printers, and smartphones within a limited geographical area, such as home, office or campus., WAN-Wide Area Network - a type of computer network that connects devices over a large geographical area (multiple cities or countries)., PAN-Personal Area Network - A network that connects devices within a limited range for devices, such as tablet, smartphone, and laptop. , Internet - a global network of interconnected computers and devices that enables the sharing of information and communication worldwide. , Nodes - All the devices connected to the a network., Protocols - Rules that define dhow data is formatted, transmitted, and received over the network. (TCP/IP, HTTP/HTTPS, FTP, SMTP/POP3), Routers - Connect different networks together, like a home network to the internet. They also decide the best path for data to travel and often include Wi-Fi capability for wireless networking. , Modem - Used to connect a network to the internet via your Internet Service Provider (ISP). , Switch - Forwards data only to the device it's intended for (commonly used in most networks). ,

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