Which of the following conditions occurs when two packets are transmitted over a medium at the same time?

Which of the following conditions occurs when two packets are transmitted over a medium at the same time?

• Asynchronous
• Collision
• Synchronous
• Contention     

EXPLANATION

In a network, when two or more stations attempt to transmit a packet across the network at the same time, a packet collision occurs. This is not uncommon in a shared medium such as an Ethernet that has many computers in the same network segment. When a packet collision occurs, the packets are either discarded or sent back to their originating stations and then re-transmitted in a timed sequence to avoid further collision. Packet collisions can result in the loss of packet integrity or can impede the performance of a network

SOURCE

https://www.webopedia.com/TERM/P/packet_collision.html