单选题Under which circumstance will a branch ISR router contain interface vlan configurations?（）Aperforming inter - VLAN routingBperforming 802.1Q trunkingCperformi ng ISL trunkingDEthernet Switch Module installedEADSL WIC installedFrunning Call Manager Express
单选题
Under which circumstance will a branch ISR router contain interface vlan configurations?（）
A
performing inter - VLAN routing
B
performing 802.1Q trunking
C
performi ng ISL trunking
D
Ethernet Switch Module installed
E
ADSL WIC installed
F
running Call Manager Express
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单选题What is a characteristic of ISL and 802.1q frame tagging in a switched LAN environment?（）AThey are used to find the best path through a network.BThey allow the exchange of filtering tables.CThey specify different implementations of the Spanning-Tree Protocol.DThey allow the exchange of routing tablesEThey provide inter-switch VLAN communication.
单选题A new Company switch was just configured using the "switchport trunk native vlan 7" command. What does this interface command accomplish？（）A Causes the interface to apply ISL framing for traffic on VLAN 7B Configures the trunking interface to forward traffic from VLAN 7C Configures the interface to be a trunking port and causes traffic on VLAN 7 to be 802.1q taggedD Configures the trunking interface to send traffic from VLAN 7 untaggedE None of the other alternatives apply