小弟我目前被老師要求考CCNA證照在自學中，在做實驗題有些地方不懂，希望各位前輩能幫忙解惑。

All physical cabling is in place and verified. Switch SW-1 is pre-configured and inaccessible. SW-2 and SW-3 ports must be configured and operational to complete the configuration.
Configure SW-2 and SW-3 ports E0/0 to use the industry standard encapsulation method for trunking and only tag VLAN 10
Configure SW-2 and SW-3 ports E0/0 to send and receive untagged traffic over VLAN 11
<題庫解答>
SW-2:
config t
interface e0/0
switchport mode trunk
switchport trunk encapsulation dot1q
switchport access vlan 10
switchport trunk native vlan 11
SW-3:
config t
interface e0/0
switchport mode trunk
switchport trunk encapsulation dot1q
switchport access vlan 10
switchport trunk native vlan 11

SW2-3 e0/0不是因該在"switchport mode trunk"後打"switchport trunk allowed vlan 10"嗎?為甚麼是"switchport access vlan 10"，而且在同個port打trunk又存取vlan是可以的嗎，不是因該在不同port下access vlan10...