A Cisco switch currently allows traffic tagged with VLANs 10 and 20 across trunk port Fa0/5. What is the effect of issuing a switchport trunk allowed vlan 30 command on Fa0/5?
- It allows VLANs 1 to 30 on Fa0/5.
- It allows VLANs 10, 20, and 30 on Fa0/5.
- It allows only VLAN 30 on Fa0/5.*
- It allows a native VLAN of 30 to be implemented on Fa0/5.