Imagine a networking world without routers.

1. If networking consisted only of layer 1 and layer 2 devices like hubs, switches, and access points, what would network communication be like?

2. Would the Internet be possible?

3. Would large campus networks be possible?

Remember, without layer 3 devices like routers, only MAC addresses could be used to get packets from device to device.

4. Is this a plausible scenario?

5. What type of networks could you build without routers?

6. What would an Internet look like without routers?