Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three.)

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Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three.)

one physical interface for each subinterface
one IP network or subnetwork for each subinterface
a management domain for each subinterface
subinterface encapsulation identifiers that match VLAN tags
one subinterface per VLAN
subinterface numbering that matches VLAN tags

Explanation: This scenario is commonly called a router on a stick. A short, well written article on this operation can be found here: http://www.thebryantadvantage.com/RouterOnAStickCCNACertificationExamTutorial.htm

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