How are VLANs useful?

Related questions

1. What is the difference between a LAN and a VLAN?
2. Why is it recommended to use a separate VLAN for IP phones?
3. Does a VLAN need a default gateway?
4. Does Tor need a VPN?
5. What's the purpose of a VLAN?
6. How does a VLAN reduce network traffic?
7. Can Layer 3 switch route between VLANs?
8. What is a local VPN?
9. Do VLANs have to be on different subnets?
10. What is Spanning Tree Protocol and how does it work?

Tags

1. #those
2. #placing
3. #domains
4. #cases
5. #access
6. #create
7. #expensive
8. #network
9. #which
10. #eliminate
11. #broadcast
12. #gaining
13. #chances
14. #periodically
15. #users
16. #outsider
17. #reduce
18. #sensitive
19. #routers