Did I understand him correctly saying there are still ring networks used by metropolitan areas?

Is there any real difference when using IPV4 vs IPV6 besides the amount of addresses available that I should be aware of?

Is there the actual math where he got that chart that I can look into? I don't understand why 10000000 would be 128 etc.

@mary bits*

At 2:14 he is showing the leading buts chart. 127 is missing. Why?

When you are setting up a virtual address can it be anything?

While the math is pretty straightforward, the why would I use this wasn't covered. How often do you use this and for what?

Is there specific software that is used for creating a virtual environment?

Is there anything not considered packet switching?

Is there a way to deny all incoming traffic to your firewall?

Is there any kind of slowdown when using just one port if you are getting a lot of traffic?

How often is this used?

When using ipconfig on a network I've seen the IPV4 and IPV6 addresses shown at the same workstation. Sometimes it shows IPV4 (preferred). Why is that?

If you are using :: to abbreviate sets of 2 or more zeros, how can you tell how many there are? In the example he condensed 3 sets down to ::?

He mentioned proprietary protocols. Do you always have the option to choose between the standard and proprietary or do some force you to use the proprietary?

Hiw important are the different types of protocols for IPV4 and 6?

If you can set a default route, why would you use static over dynamic?

Are port mirrors common for companies that monitor what employees are doing on the network or is something else used?

If you have a bad switch are you informed in any way?

Is there a limit to how many trunks you can use?