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Network technology (Networking hardware (Gateway: an interface providing a…
Network technology
Networking hardware
Gateway: an interface providing a compatibility between networks by converting transmission speeds, protocols, codes, or security measures.
Router: a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. A data packet is typically forwarded from one router to another through the networks that constitute the internetwork until it reaches its destination node.
Switch: a device that connects devices together on a computer network, by using packet switching to receive, process and forward data to the destination device. Unlike less advanced network hubs, a network switch forwards data only to one or multiple devices that need to receive it, rather than broadcasting the same data out of each of its ports.
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Repeater: an electronic device that receives a signal and retransmits it at a higher level or higher power, or onto the other side of an obstruction, so that the signal can cover longer distances.
The OSI Model
The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to its underlying internal structure and technology.
Layers
Layer 1 : Physical layer
The physical layer defines the means of transmitting raw bits rather than logical data packets over a physical data link connecting network nodes.
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Layer 3 : Network layer
The network layer is responsible for packet forwarding including routing through intermediate routers.
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Layer 5 : Session layer
The session layer provides the mechanism for opening, closing and managing a session between end-user application processes, i.e., a semi-permanent dialogue.
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Networking technology allows for the exchange of data between large and small information systems used primarily by businesses and educational institutions.
Network technicians, also known as network engineers or specialists, are responsible for the configuration, installation and troubleshooting of the technology used to transmit digital information, including audio, visual and data files.
Through networking, end-users are able to transmit files, messages and other data through e-mail or various other channels, sharing information through Internet or Intranet connections, based on the needs of an organization.