What is the difference between a LAN and a VLAN?

Related questions

1. Can VLANs communicate without a router?
2. How are VLANs useful?
3. How many VLANs we can create in switch?
4. Why do I need VLANs?
5. Why do we need inter VLAN routing?
6. How does a Layer 3 switch differ from a layer 2 switch?
7. Do VLANs need separate subnets?
8. How does a VLAN reduce network traffic?
9. What is Spanning Tree Protocol and how does it work?
10. Does a VLAN need an IP address?

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2. #major
3. #connected
4. #between
5. #works
6. #employ
7. #domain
8. #broadcast
9. #network
10. #differences
11. #single
12. #multiple
13. #while
14. #devices
15. #difference
16. #collection
17. #communications
18. #which
19. #local