Two hosts on a LAN have accidentally transmitted at the same time, resulting in a collision. Which of the following specifies the first step that occurs after a collision takes place?
Explanation
Answer: C - If a collision takes place, the first thing that happens is that a jam signal is sent to inform all devices that a collision has occurred.
Key Takeaway: When a host on an Ethernet LAN has information to send, the sending device listens to the Ethernet to make sure it is not busy. When it is not busy, the sender sends the frame and listens to make sure that no collision occurred. Once the senders hear the collision, they each send a jamming signal to ensure that all stations recognize the collision. Once the jamming period is complete, each sender randomizes a timer and waits that long. When each timer expires, the sending device starts sending.
