Which of the following conditions is used to transmit two packets over a medium at the same time?

Which of the following conditions is used to transmit two packets over a medium at the same time?

• Collision
• Asynchronous
• Contention
• Synchronous 

EXPLANATION

A collision is the event in which two or more bodies exert forces on each other in about a relatively short time. Although the most common use of the word collision refers to incidents in which two or more objects collide with great force, the scientific use of the term implies nothing about the magnitude of the force.

In a half duplex Ethernet network, a collision is the result of two devices on the same Ethernet network attempting to transmit data at exactly the same time. The network detects the "collision" of the two transmitted packets and discards them both. Collisions are a natural occurrence on Ethernets.