When two NICs send at the same time, describe how a collision is detected and corrected.
What will be an ideal response?
When two NICs send at the same time, they'll sense the overlapping signals, and immediately know that a collision has occurred. When they detect a collision, both nodes stop transmitting. They then each generate a random number to determine how long to wait before trying again. If you imagine that each machine rolls its magic electronic dice and waits for that number of seconds, you wouldn't be too far from the truth, except that the amount of time an Ethernet node waits to retransmit is much shorter than one second. Whichever node generates the lowest random number begins its retransmission first, winning the competition to use the wire. The losing node then sees traffic on the wire and waits for the wire to be free again before attempting to retransmit its data
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What will be an ideal response?
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