Ethernet network topology
LAN Technologies | ETHERNETLocal Area Network (LAN) is a data communication network connecting various terminals or computers within a building or limited geographical area. The connection among the devices could be wired or wireless. Ethernet, Token Ring and Wireless LAN using IEEE 802.11 are examples of standard LAN technologies.
Ethernet:- Since we are talking about IEEE 802.3 standard Ethernet, therefore, 0 is expressed by a high-to-low transition, a 1 by the low-to-high transition. In both Manchester Encoding and Differential Manchester, the Encoding Baud rate is double of bit rate. Baud rate = 2* Bit rate Ethernet LANs consist of network nodes and interconnecting media or links. The network nodes can be of two types: Data Communication Equipment (DCE):- DCEs are the intermediate network devices that receive and forward frames across the network. They may be either standalone devices such as repeaters, network switches, routers, or maybe communications interface units such as interface cards and modems. The DCE performs functions such as signal conversion, coding, and maybe a part of the DTE or intermediate equipment. Currently, these data rates are defined for operation over optical fibers and twisted-pair cables: ii) Gigabit Ethernet iii) 10 Gigabit Ethernet ALOHA There are two different versions of ALOHA: Vulnerable Time = 2 * Tt The efficiency of Pure ALOHA: 2. Slotted Aloha Collision is possible for only the current slot. Therefore, Vulnerable Time is Tt. The efficiency of Slotted ALOHA: Image Reference: Wikipedia, Technical University of Munich References: This article is contributed by Sheena Kohli and Abhishek Agrawal
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Computer Networks
Data Link Layer Practice Tags :
Computer Networks
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