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Network devices are hardware devices that connect computers, printers, fax machines, and other electronic devices to a network. These devices send data over the same or separate networks in a quick, secure, and accurate manner. Inter-network and intra-network network devices are both possible.

The examples are switch, hub, bridge, router, gateway, modem, repeater & access point.

Network devices can be divided into two groups Generally speaking, network devices are the devices that are necessary to build a network and to keep communication flowing. Network devices include hubs, routers, switches, repeaters, and wireless access points.

Using network protocols has various advantages. The primary concern is safety. Network protocols encrypt connections between two computers, making it more difficult for an attacker to listen in on the data packets going back and forth. This also means that if one computer's IP address is changed without their knowledge, they will be unable to communicate with the other computer because the latter will be unable to decode packet data.

The Internet protocol suite is the conceptual model and set of communications protocols used on the Internet and similar computer networks. It is commonly known as TCP/IP because its most important protocols are the Transmission Control Protocol (TCP) and the Internet Protocol (IP).

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