Computer Science - Networks

Router

A device that forwards data packets to parts of a computer network
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Switch

A switch is a telecommunication device that receives a message from any device connected to it and then transmits the message only to the device for which the message was meant.
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Hub

This is a hardware device that is used to network multiple computers together. It is a central connection for all the computers in a network, which is usually Ethernet-based.
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Server

A server is a computer that provides data to other computers. It may serve data to systems on a local area network (LAN) or a wide area network (WAN) over the Internet.
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Client

A computer network in which one centralized, powerful computer (called the server) is a hub to which many less powerful personal computers or workstations (called clients) are connected.
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NIC

A network interface controller (also known as a network interface card, network adapter, LAN adapter and by similar terms) is a computer hardware component that connects a computer to a computer network.
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Ring Network

A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travels from node to node, with each node along the way handling every packet.
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Star Network

Star networks are one of the most common computer network topologies. In its simplest form, a star network consists of one centralswitch, hub or computer, which acts as a conduit to transmit messages. This consists of a central node, to which all other nodes are connected
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Bus Network

A bus network topology is a network architecture in which a set of clients are connected via a shared communications line/cables, called a bus. There are several common instances of the bus architecture, including one in the motherboard of most computers.
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