JNCIA-Cloud: Juniper Networks Certified Associate – Cloud — Question 26

Which protocol is used to transport data in an overlay network?

Answer options

• A. BGP
• B. EVPN
• C. OSPF
• D. VXLAN

Correct answer: D

Explanation

VXLAN is specifically designed for overlay networks, enabling the encapsulation of Layer 2 Ethernet frames within Layer 3 packets. BGP, EVPN, and OSPF serve different roles in networking; BGP is used for routing, EVPN is an Ethernet VPN framework, and OSPF is a routing protocol, none of which directly facilitate data transport in an overlay network like VXLAN does.