In the seven-layer OSI model of computer networking, the physical layer or layer 1 is the first and lowest layer: the layer most closely associated with...
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The physical-layer specifications of the Ethernet family of computer network standards are published by the Institute of Electrical and Electronics Engineers...
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OSI model (redirect from OSI seven-layer model)
abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. The model describes communications from the physical implementation...
54 KB (5,624 words) - 15:00, 1 May 2025
transfers data between nodes on a network segment across the physical layer. The data link layer provides the functional and procedural means to transfer...
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OSI layers. Telephone network modems IrDA physical layer USB physical layer EIA RS-232, EIA-422, EIA-423, RS-449, RS-485 Ethernet physical layer 10BASE-T...
11 KB (970 words) - 22:41, 17 February 2025
Medium access control (redirect from MAC layer)
control abstraction of the physical layer such that the complexities of physical link control are invisible to the LLC and upper layers of the network stack...
10 KB (1,265 words) - 20:34, 9 May 2025
networking, an Ethernet frame is a data link layer protocol data unit and uses the underlying Ethernet physical layer transport mechanisms. In other words, a...
26 KB (3,290 words) - 22:24, 29 April 2025
as a combination of the OSI's data link layer (layer 2) and physical layer (layer 1). The link layer is described in RFC 1122 and RFC 1123. RFC 1122...
6 KB (1,061 words) - 20:14, 27 August 2024
Ethernet Advanced Physical Layer (Ethernet-APL) describes a physical layer for the Ethernet communication technology which is especially developed for...
8 KB (735 words) - 09:14, 24 March 2025
In the seven-layer OSI model of computer networking, the network layer is layer 3. The network layer is responsible for packet forwarding including routing...
5 KB (636 words) - 07:58, 28 February 2025
IEEE 802.15.4 (section The physical layer)
low-rate wireless personal area network (LR-WPAN). It specifies the physical layer and media access control for LR-WPANs, and is maintained by the IEEE...
20 KB (2,532 words) - 20:33, 18 March 2025
Key generation (section Generation in physical layer)
2025-05-14. Chan Dai Truyen Thai; Jemin Lee; Tony Q. S. Quek (Feb 2016). "Physical-Layer Secret Key Generation with Colluding Untrusted Relays". IEEE Transactions...
5 KB (698 words) - 04:27, 19 May 2025
DECT (section Physical layer)
636-3. Part 3: Physical layer" (PDF). "ETSI TS 103 636-4. Part 4: MAC layer" (PDF). "ETSI TS 103 636-5. Part 5: DLC and Convergence layer" (PDF). Digital...
53 KB (6,227 words) - 18:13, 4 April 2025
now-flourishing area of research that is known as physical layer encryption. It exploits the physical wireless channel for its security by communications...
17 KB (1,753 words) - 09:14, 30 November 2024
An application layer is an abstraction layer that specifies the shared communication protocols and interface methods used by hosts in a communications...
11 KB (1,109 words) - 09:47, 24 May 2025
Asynchronous communication (section Physical layer)
start and stop bits. In asynchronous serial communication in the physical protocol layer, the data blocks are code words of a certain word length, for example...
6 KB (593 words) - 12:18, 5 November 2024
EBUS (serial buses) (section Physical layer)
e.g.: eBUS specifications – physical layer / data-link layer V.1.3.1 (March 2007) eBUS specifications – application layer V1.6.1 (March 2007) eBus Wiki...
5 KB (679 words) - 03:19, 10 November 2023
DOCSIS (section Physical layer)
options available at Open Systems Interconnection (OSI) layers 1 and 2—the physical and data link layers. Channel width: Downstream: All versions of DOCSIS...
30 KB (3,035 words) - 21:58, 14 February 2025
CAN bus (section CAN lower-layer standards)
link layer, and ISO 11898-2 which covers the CAN physical layer for high-speed CAN. ISO 11898-3 was released later and covers the CAN physical layer for...
78 KB (9,553 words) - 05:49, 13 May 2025
DeviceNet (section Physical layer)
Technical Overview Define the OSI seven-layer architecture model the physical layer, data link layer and application layer Network in addition to the signal...
8 KB (1,081 words) - 17:23, 13 November 2024
OSI protocols (section Layer 1: physical layer)
is structured into seven conceptual layers. The layers form a hierarchy of functionality starting with the physical hardware components to the user interfaces...
11 KB (1,203 words) - 15:13, 19 November 2024
Network topology (redirect from Physical topology)
logical topologies may be identical. A network's physical topology is a particular concern of the physical layer of the OSI model. Examples of network topologies...
40 KB (5,238 words) - 09:07, 24 March 2025
Air interface (section Physical Layer)
interface involves both the physical and data link layers (layer 1 and 2) of the OSI model for a connection. The physical connection of an air interface...
4 KB (594 words) - 20:47, 11 November 2024
BroadR-Reach (section Physical layer)
known as OPEN Alliance BroadR-Reach or OABR) technology is an Ethernet physical layer standard designed for automotive connectivity applications. BroadR-Reach...
5 KB (510 words) - 00:54, 5 April 2024
Ethernet hub (redirect from Layer 1 switch)
output of every port except the original incoming. A hub works at the physical layer. A repeater hub also participates in collision detection, forwarding...
11 KB (1,396 words) - 19:38, 4 September 2024
In computer networking, the transport layer is a conceptual division of methods in the layered architecture of protocols in the network stack in the Internet...
16 KB (1,611 words) - 22:32, 21 March 2025
networking, wire speed or wirespeed refers to the hypothetical peak physical layer net bit rate (useful information rate) of a cable (consisting of fiber-optical...
3 KB (417 words) - 01:45, 26 April 2024
PCI Express (section Physical layer)
PCI Express is a layered protocol, consisting of a transaction layer, a data link layer, and a physical layer. The Data Link Layer is subdivided to include...
139 KB (12,986 words) - 16:08, 22 May 2025
RapidIO (section Physical layer)
released in June 2002, defined a serial interconnection based on the XAUI physical layer. Devices based on this specification achieved significant commercial...
27 KB (3,344 words) - 17:18, 15 March 2025
are implemented in distinct layers. The physical layer sends ones and zeros across a wire or fiber. The data link layer then organizes these ones and...
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