Explain what a collision domain is.

How many collision domains exist on a switch?

	1.	One for every port on the switch.
	2.	24 / 48, depending on the model of the switch
	3.	The switch is a collision domain.
	4.	One for every fiber interface on the switch.

How many collision domains exist on a hub?

1.

	24 / 48, depending on the model of the hub.
	2.	The hub, and all devices connected to it, are apart of the same collision domain.
	3.	The links between the hub and the client devices, but not the uplink (like the connection to the ISP), are in the same collision domain.
	4.	Each copper interface is a collision domain.

How do devices in the same collision domain deal with collisions?

1.

	Devices wait until the line is clear. After four seconds of line clarity, the device will send out a marker flag containing the length of the transmission, where all other clients will wait that amount of time. The client begins to forward the traffic, and once it is finished, it sends a 'FIN' flag to inform the devices that it has finished (as a confirmation method).
	2.	Devices wait until the line is clear, and then begin to send the frame. As it sends the frame, it listens for collisions, and if one is detected, each device sends a jamming signal to ensure all devices in the collision domain recognize the collision, and then wait a random time until it begins transmitting.
	3.	At random intervals, the device will begin to forward traffic on the line. If a collision is detected, it waits to transmit the next packet.
	4.	Devices talk over each other on the collision domain, regardless of who is listening.