Explain about CSMA/CD, Computer Engineering

Assignment Help:

Explain about CSMA/CD

It is an access method used mainly with LANs configured in a bus topology. With CSMA/CD, any station (node) can transmit a message to any other  station  (or  stations)  as  long  as  transmission  medium  is  free  of transmissions  from  other  stations.  Stations monitor (listen to) line to determine if line is busy. If the station has a message to send though the line is busy, it waits for an idle condition before sending its message. If two stations transmit at the same instance, a collision takes place. When this happens, station  first  sensing  the   collision  sends  a  special  jamming  signal  to  all other  stations  on  the  network.  All  stations  then  cease  transmitting  (back  off) and  wait  a  random  period  of  time  before  attempting  a  retransmission.  Random delay time for every station is different and thus, allows for prioritizing the stations on the network. If successive collisions take place, back off period for each station is doubled. With CSMA/CD stations should contend for the network. A station isn't guaranteed access to network. To detect the occurrence of a collision, a station should be capable of receiving and transmitting simultaneously. CSMA/CD is used by most LANs configured in a bus topology. Ethernet is an example of a LAN which uses CSMA/CD.

 


Related Discussions:- Explain about CSMA/CD

Information technology or information system, Information Technology or Inf...

Information Technology or Information System Before going further we need to clarify what we mean by the term information system. It is easy to confuse terminology as many tex

What is a microinstruction, What is a microinstruction? Each word in co...

What is a microinstruction? Each word in control memory having within it a microinstruction.  The microinstruction specifies one or more micro-operations for the system.  A seq

Explain creating files for writing only in c, Creating Files for Writing On...

Creating Files for Writing Only Creating Files for Writing Only : To create a text file for writing only, pass "w" into fopen as the second argument. This example follows along

Concept development journal, The Concept Development journal must contain: ...

The Concept Development journal must contain: An introductory paragraph detailing what conclusions you have drawn from your research and how you intend to proceed. This should b

Feasebility study, what are the feasibility study of online result manageme...

what are the feasibility study of online result management system?

Prove, state and prove distributive law?

state and prove distributive law?

Explain about the e-commerce over extranets, Explain about the e-commerce o...

Explain about the e-commerce over extranets. Extranets are regarding “joining up” the supply chain-suppliers, distributors, resellers and customers are enabling business-to bus

Show how pages will be allocated using first-in-first-out, Consider the fol...

Consider the following page reference and reference time strings for a program: Page reference string: 5,4,3,2,1,4,3,5,4,3,2,1,5,..... Show how pages will be allocated using t

Connection machine fortran, Q. Connection Machine FORTRAN? Connection M...

Q. Connection Machine FORTRAN? Connection Machine Fortran was a subsequent SIMD language developed by Thinking Machines Corporation. Connection Machine Fortran incorporated all

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd