avoiding data collision (1 Viewer)

[rawker]

Which is better at avoiding data collision, CSMA/CD or Token Ring. Explain why.

 

[Lwaxana]

That would depend on the network since those methods are for different systems

but may I refer you to
http://en.wikipedia.org/wiki/Token_ring
and
http://en.wikipedia.org/wiki/Carrier_Sense_Multiple_Access

so you can decide for yourself

 

[seremify007]

Which is better at avoiding data collision, CSMA/CD or Token Ring. Explain why.

Different network topologies use those different systems.

But in my opinion, the Token Ring network, whilst slower, is a better system at 'avoiding data collision' as you requested because a node will only send data when it has the token, and as a result, it prevents data collision by just not allowing multiple nodes to send data at once.

 

[priesty]

i agree.... the token is better as it only allows ONE node to speak at any one time. so that means that the node that has its information in the token doesnt have to worry about any other node also trying to transmit data because it can't unless the originating note wipes its own information first.

CSMA/CD however still have the possibility of collisions occuring as two nodes when listening to the backbone line (of a bus topology for example) may hear that there is a signal denoting that there are no current transmissions HOWEVER leading to the two nodes to transmit data packets at the SAME TIME leading to collision and then the differing delayed retransmission time of each node is then relied upon to retransmit the packets (if they are not received by the addressee in the given waiting time)

i suggest you use the Jacaranda Text Book to better understand Token Ring and CSMA/CD.

 

[BrentMcKendrick]

Hi,
In response to your question,
The Token Ring method of using a shared LAN avoids collisions wotsoever.
There is no possible way that a token ring network can have a 'collision'. So the answer is clearly token ring.

Why?
Because the token ring protocol gives each station its turn to transmit, and no other station may attempt to transmit without the token, thus each station awaits for its turn, and there can never be a collision.

The CSMA/CD MAC protocol does do its best of detecting and hopefully avoiding collisions, but since all stations may transmit when the line is free they can transmit at the same time and on certain situations collide.