collision in switched systems ?

ggauravr

I had this doubt while studying about bridges and switches..Hope someone would help me.
A bridge helps divide the collision domain by dividing an otherwise single network into two or more network segments,so that each network segment acts as a separate collision domain.If two or more devices from different segments intend to send data to nodes which are in the same segment ,does that result in a collision at the receiver segment ??
and similarly I read that there's no collision in a full-duplex switched system,so there's no need for collision handling techniques.. What if two or more nodes in such a system,send data to a same node..does that result in a collision at the receiver side ??
Hope to get help from someone..thanks in advance.

hexem

As you say the bridge creates seperate collision domains, which effectively means shared bandwidth for all nodes in that collision domain, the more nodes in a collision domain the more likely you are to experience a collision.

All devices in that collision domain can only send or receive, they cannot do both at the same time. this is half-duplex networking.

Just to add, bridges also filter and learn and foward based on mac addresses, this is done through software instead of hardware, just think of a switch as a bridge with more ports and the ability for full duplex instead of half.

Correct about switche's they are full-duplex, meaning that nodes can send and receive at the same time, which effectively eliminates collisions and the need for CSMA/CD as it's creating a point-to-point connection (using mac addresses)