Why is native VLAN untagged?

Related questions

1. What is Vxlan openstack?
2. Why is VLAN required?
3. What is tagged untagged traffic?
4. How does open vSwitch work?
5. What is the purpose of NIC teaming?
6. What is Ovsdb?
7. What is OVS in networking?
8. Are trunk ports tagged or untagged?

Tags

1. #separated
2. #environments
3. #vlans
4. #networks
5. #cisco
6. #separate
7. #network
8. #security
9. #switch
10. #enterprise
11. #logically
12. #environment
13. #vulnerability
14. #trunk
15. #ports
16. #native
17. #untagged
18. #typically