Cisco Enterprise Networks SDA, SDWAN and Catalyst Center for System Engineers — Question 27

Which three options describe fabric overlay concepts? (Choose three.)

Answer options

• A. A link state routing protocol like OSPF
• B. A virtual Local Area Network
• C. An Overlay uses alternate forwarding attributes
• D. GRE is a type of Overlay
• E. Intermediate System to Intermediate System
• F. An Overlay is a logical topology

Correct answer: B, D, F

Explanation

The correct answers are B, D, and F because a virtual Local Area Network (VLAN) is a fundamental aspect of overlay networks, GRE is a tunneling protocol used for creating overlays, and overlays represent a logical topology that abstracts the physical network. Options A and E refer to routing protocols that do not specifically describe fabric overlays.