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Computer Networks refer to interconnected systems that allow multiple computers and devices to communicate and share resources, data, and information. These networks can range from small, local area networks (LANs) within a home or office to vast, global networks like the Internet. At the core of computer networks are various protocols, such as TCP/IP, that define the rules and standards for data transmission, ensuring reliable and efficient communication between devices. Networks are typically categorized based on their scope and scale, including LANs, wide area networks (WANs), and metropolitan area networks (MANs). They can be wired, using physical cables like Ethernet, or wireless, using technologies like Wi-Fi or Bluetooth. Computer networks play a critical role in modern society, enabling everything from simple file sharing to complex cloud computing and global communication. Network architecture and design involve considerations of security, scalability, speed, and reliability, making it a vital area of study in computer science and engineering.
