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

Which memory can not be accessed randomly, Which of following can not be ac...

Which of following can not be accessed randomly DRAM, SRAM, ROM or Magnetic tape ? Ans. Magnetic tape cannot be accessed randomly; it can only be accessed sequentially.

Explain asynchronous decade counter, Draw the circuit diagram of Asynchrono...

Draw the circuit diagram of Asynchronous decade counter and explain its working. Ans: To  design  a  circuit diagram of decade  asynchronous  counter  initially  we  dr

What is associative search, What is associative search? The cost of an ...

What is associative search? The cost of an associative cache is higher that the cost of a direct mapped cache due to the need to search all 128 bit tag patterns to verify wheth

C++, Write a program to find the area under the curve y = f(x) between x = ...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Internal organisation of memory chips, expplain in detail the internal orga...

expplain in detail the internal organisation of computer?

What is the network service access policy, What is the Network Service Acce...

What is the Network Service Access Policy A high-level, issue-specific policy which defines those services that are allowed or denied from the restricted network. It also co

Define relocation bits utilized by relocating loader, Relocation bits used ...

Relocation bits used by relocating loader are specified by? Ans. Relocation bits utilized by relocating loader are identified by Assembler or Translator.

C, solution for oadovan string inc language

solution for oadovan string inc language

Difference between shadow and override in programming, Overriding tell us o...

Overriding tell us only the methods, but shadowing tells us the entire element.

Assembler directives, Assembler directives: An assembler directive is ...

Assembler directives: An assembler directive is a statement to give direction to the assembler to perform the task of assembly process. Assembler directives control organizati

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