Which of the following mechanisms was created to overcome the problem of collisions that occur on wired networks when traffic is simultaneously transmitted from different nodes?

CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) is primarily used in wireless networks to minimize collisions by listening before transmitting and using acknowledgments.

CSMA/CD (Carrier Sense Multiple Access with Collision Detection) is used in wired Ethernet networks to detect collisions after they occur and then retransmit data, rather than preventing them entirely.

Polling is a controlled access method where a central device queries each node for data, which manages network access but is not inherently a mechanism designed specifically to overcome collisions in the same manner as token-passing.

Token-passing is a deterministic access method where a special frame, called a token, is passed sequentially among network nodes. Only the node holding the token is permitted to transmit data, thereby ensuring that only one device can access the network medium at any given time and completely preventing data collisions.