Gateway and Policy JN0-460 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A host with a fixed MAC address moves from one leaf switch to another in an EVPN-VXLAN fabric. The network team wants to ensure that the fabric quickly updates its forwarding tables to reflect the new location and avoids black-holing traffic. What EVPN mechanism is used to handle this MAC mobility event?

   • ARoute target (RT) change on the new leaf switch
   • BMAC aging timers on the old leaf switch
   • CVXLAN VNI reconfiguration on the new leaf switch
   • DMAC mobility sequence numbers in Type-2 routes
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A campus fabric uses EVPN-VXLAN with a centralized Layer 3 gateway on a pair of spine switches. Hosts in VNI 10 (subnet 10.1.1.0/24) need to communicate with hosts in VNI 20 (subnet 10.2.2.0/24). The spine gateway will advertise the host routes to the leaf switches. Which EVPN route type will the spine gateway use to advertise the individual host IP addresses?

   • AType-5 routes with IP prefixes
   • BType-3 routes for multicast
   • CType-2 routes with MAC and IP information
   • DType-1 routes for Ethernet auto-discovery
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   An EVPN-VXLAN fabric has two leaf switches that should only exchange routes for VNI 100, but they are currently importing all routes from each other. The network team wants to restrict the route exchange to only VNI 100. What configuration change should be made?

   • AConfigure a unique route distinguisher (RD) for VNI 100
   • BApply a route policy that filters based on the route target (RT) associated with VNI 100
   • CChange the VXLAN VNI on one leaf switch
   • DDisable BGP on the leaf switches for other VNIs
   Reveal Solution Discussion Select an answer first
5. 14expert · hard

   An EVPN-VXLAN fabric has two tenants, each with its own MAC-VRF. The network team wants to ensure that Tenant A's leaf switches do not receive Tenant B's MAC routes, but they also want to allow a specific set of Tenant B routes to be imported into Tenant A for a shared service. What is the most flexible way to achieve this?

   • AUse distinct route targets (RTs) for each tenant and configure import policies on Tenant A's leaf switches to selectively accept the shared service routes
   • BUse the same route target (RT) for both tenants and rely on route distinguishers (RDs) to differentiate
   • CUse different VNIs for each tenant and configure a route policy on the spine to filter Type-2 routes
   • DDisable BGP on Tenant B's leaf switches
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A leaf switch in an EVPN-VXLAN fabric has a MAC-VRF configured for VNI 100. The network team observes that a MAC address learned locally is not being advertised to remote leaf switches. What is the most likely reason for this issue?

   • AThe MAC address is not in the MAC-VRF's forwarding table
   • BThe MAC address is a multicast MAC
   • CThe route target (RT) for VNI 100 is not configured on the leaf switch
   • DThe VXLAN tunnel is down
   Reveal Solution Discussion Select an answer first