[&] Which of the following is required when configuring a "Router-On-A-Stick"
- ISL Trunking must be used between the Router and the Switch.
- A unique, physical interface must be allocated on the router for each VLAN.
- Each interface on the router must share IP addressing space from a common IP subnet.
- A sub-interface must be created for each of the non-Native VLANs.

[&] What is the main advantage of using the "Routing-On-A-Stick" approach to Inter-VLAN routing as compared to utilizing a router with several, physical interfaces?
- Scalability
- Redundancy
- Simplification of configuration
- Resilience