Câu 45: 200-310: Designing for Cisco Internetwork Solutions

Which one of these statements is true concerning the data center distribution (aggregation) layer design?

1. A. With Layer 3 at the aggregation layer, the physical loops in the topology must still be managed by STP.
2. B. The boundary between Layer 2 and Layer 3 must reside in the multilayer switches, independent of any other devices such as firewalls or content switching devices.
3. C. A mix of both Layer 2 and Layer 3 access is sometimes the most optimal. — đáp án hiện tại
4. D. In a small data center, the aggregation layer can connect directly to the campus core, exchanging IP routes and MAC address tables.