Internetworking Device

Internetworking Device

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Internetworking devices, also known as network devices or networking hardware, are physical devices that are required for communication and interaction between devices on a computer network. Specifically, they mediate data transmission in a computer network.

These devices include a range of equipment like routers, switches, hubs, modems, and gateways, all serving different purposes but collectively helping to connect individual devices into a network, facilitating communication and data exchange.

  1. Routers: These are devices that forward data packets between computer networks, creating an overlay internetwork. They connect two or more logical subnets, which do not necessarily map one-to-one to the physical interfaces of the router.
  2. Switches: Network switches are central nodes that forward messages between nodes in the network based on MAC address. They can be thought of as smarter versions of hubs. A switch maintains a list of all devices connected to it and sends incoming messages only to the device for which the message was intended.
  3. Hubs: A hub is a physical layer networking device which is used to connect multiple devices in a network. They are used to connect devices in a LAN (Local Area Network).
  4. Modems: A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device.
  5. Gateways: In networking terms, a gateway is one of the most essential features of a network as it is the node that allows you to access and exit a network.

These devices are all used to create a reliable and efficient network infrastructure. Depending on the specific network structure, certain internetworking devices may be more critical or necessary than others.

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