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Explaining a Difference

M

MallowGirl12

Member
Explain the difference between the Carrier Sense Multiple
Access/Collision Detect and Carrier Sense Multiple
Access/Collision Avoid

hey guys i have tried to research alot for an for this question, but can not find the right explaining in the way I want it, so was wondering if u guys can help. Thanks 🙂
 
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Broadly speaking collision detection is used on wired networks like cat5 Ethernet cables and Collision avoidance is used on wireless networks.

Collision detection works by checking the signal to make sure it's receiving only one message at a time. If it gets 2 messages at the same time it sends a jam signal so everyone on the segment (collision domain) knows that a collision occurred and to stop transmitting. Each node starts a random back off timer so they don't try to send data at the same time.

In collision avoidance networks each host asks for permission before sending data. They transmit a request-to-send packet and the other node replies with a clear-to-send packet acknowledging that they will not transmit for a moment while the other host does.
 
Thank you ghiedo27, that was helpful 🙂 heehee no, lol, just revising my past exam papers for my exam in august RadictDreamer 🙂
 
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