Underlay and Overlay Networks JN0-214 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is the primary purpose of the underlay network in a virtualized data center?

   • ATo provide a centralized control plane for all network devices.
   • BTo define the logical topology of virtual networks.
   • CTo isolate tenant traffic using VLANs and VRFs.
   • DTo provide the physical transport for both traditional and overlay-encapsulated traffic.
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   What is the role of a VTEP in an overlay network?

   • AIt provides the physical connectivity for the underlay.
   • BIt encrypts all traffic in the overlay.
   • CIt encapsulates and decapsulates overlay traffic.
   • DIt routes traffic between different overlay networks.
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   Which statement best describes an overlay network?

   • AIt is a network that uses only Layer 2 switching.
   • BIt is a virtual network built on top of an existing physical network.
   • CIt is a network that replaces the need for physical routers and switches.
   • DIt is the physical network that provides connectivity between devices.
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   What is a trade-off of using a centralized controller for the overlay control plane?

   • AIt requires more physical devices for the underlay.
   • BIt is less scalable than a distributed control plane.
   • CIt does not support BGP-EVPN.
   • DIt can become a single point of failure.
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   Which characteristic is typically associated with an overlay network compared to an underlay network?

   • AIt is more flexible and scalable because it is decoupled from the physical topology.
   • BIt is less secure because it does not support encryption.
   • CIt requires more physical devices than the underlay.
   • DIt is simpler to troubleshoot because it uses the same logical topology as the physical network.
   Reveal Solution Discussion Select an answer first