Physical connectors

This diagram illustrates the Physical layer (Layer 1) of the OSI model. The Physical layer is responsible for the ultimate transmission of data over network communications media. It operates with data in the form of bits that are sent from the Physical layer of the sending (source) device and received at the Physical layer of the destination device. Ethernet cabling, Token Ring network technology and SCSI all function at the Physical layer of the OSI model. Hubs and other repeaters are standard network devices that function at the Physical layer.

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In the world of computers, networking is the practice of linking two or more computing devices together for the purpose of sharing data. Networks are built with a mix of computer hardware and computer software. A network can consist of two computers connected together on a desk or it can consist of many smaller network connected together to form a bigger network across a continent.

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Specifies the electrical, mechanical, procedural, and functional requirements for activating, maintaining, and deactivating the physical link between end systems. Examples of physical link characteristics include voltage levels, data rates, maximum transmission distances, and physical connectors.

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1. Lớp physical: - Mô tả các thông số kỹ thuật về media type connector type signaling type - Tiêu chuẩn Ethernet mô tả cho LAN (Lưu ý: Ethernet bao gồm những mô tả kỹ thuật cho 2 lớp physical và Data link).

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