CCNA: Cisco Certified Network Associate — Question 282

Which protocol is used in Software Defined Access (SDA) to provide a tunnel between two edge nodes in different fabrics?

Answer options

• A. Generic Router Encapsulation (GRE)
• B. Virtual Local Area Network (VLAN)
• C. Virtual Extensible LAN (VXLAN)
• D. Point-to-Point Protocol (PPP)

Correct answer: C

Explanation

The correct answer is C, Virtual Extensible LAN (VXLAN), because it is specifically designed to create overlay networks that extend Layer 2 segments over Layer 3 networks, allowing for better scalability in SDA. Options A (GRE), B (VLAN), and D (PPP) do not provide the same level of flexibility and are not intended for the same purpose within the SDA framework.