Layer 2 and Layer 3 Stretch JN0-683 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   What is a key advantage of using an IP fabric for Layer 3 stretch compared to traditional MPLS?

   • AIP fabric uses standard IP routing and can run over any IP network
   • BIP fabric is only suitable for small networks
   • CIP fabric eliminates the need for routing protocols
   • DIP fabric provides better encryption than MPLS
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A network engineer is configuring Layer 3 stretch between two data centers using BGP as the routing protocol. The engineer wants to ensure that the BGP sessions are established over the IP fabric and that the routes are exchanged between the sites. Which BGP configuration is essential for this to work?

   • AConfigure OSPF between the sites and redistribute into BGP
   • BConfigure IBGP between the sites with the physical interfaces as the BGP peers
   • CConfigure static routes for the BGP peers
   • DConfigure EBGP between the sites with the loopback addresses as the BGP peers
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   A large enterprise operates two data centers connected by a dark fiber link. They need to stretch a few subnets between the sites for workload mobility. The network team is evaluating whether to use EVPN or a traditional IP fabric with OSPF. The key constraint is that the team wants to minimize the number of routing protocol instances and simplify the configuration. Which approach is most appropriate?

   • AUse EVPN with BGP as the only routing protocol, carrying both the underlay and overlay routes
   • BUse a traditional IP fabric with OSPF and no overlay
   • CUse static routes for the stretched subnets and OSPF for the rest
   • DUse OSPF for the underlay and BGP for the overlay in an EVPN design
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   How does EVPN provide both Layer 2 and Layer 3 stretch capabilities?

   • ABy using OSPF to learn MAC addresses
   • BBy using BGP as the control plane to advertise MAC and IP routes
   • CBy using VXLAN to route IP traffic
   • DBy using STP to extend VLANs
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   What is the primary purpose of stretching Layer 3 across data center sites?

   • ATo provide IP connectivity between sites while allowing each site to maintain its own Layer 2 domain
   • BTo extend the same VLAN across sites
   • CTo eliminate the need for IP addresses
   • DTo replace the need for routing protocols
   Reveal Solution Discussion Select an answer first