2.4 Explain Dynamic and Static Routing Protocol Tuning SD-WAN-ENGINEER Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   An SD-WAN edge is running OSPF with a core router. The administrator wants to speed up convergence when a link fails. Which OSPF parameter should be adjusted?

   • AIncrease the OSPF metric
   • BChange the OSPF area type
   • CIncrease the administrative distance
   • DDecrease the hello and dead timers
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   What is the purpose of adjusting the timers of a dynamic routing protocol, such as OSPF or BGP, in an SD-WAN deployment?

   • ATo define the physical interface speed for the routing updates
   • BTo control how quickly the protocol detects network changes and converges on new routes
   • CTo change the maximum number of routes the protocol can store
   • DTo set the encryption key used for routing updates
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   An SD-WAN branch is running OSPF with a local router. After a recent change, the branch's routing table shows the OSPF route to a remote subnet, but traffic to that subnet is being black-holed. The OSPF neighbor is up and the route is present. Which troubleshooting step is most likely to reveal the root cause?

   • ACheck the OSPF hello and dead timers on both sides
   • BVerify the OSPF route's next-hop is reachable and the outgoing interface is correct
   • CIncrease the OSPF metric for the route
   • DConfirm the OSPF area ID matches on both routers
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   In an SD-WAN environment, what is the purpose of configuring a static default route?

   • ATo encrypt all traffic that matches the route
   • BTo automatically learn routes from all connected SD-WAN branches
   • CTo provide a backup path only when all dynamic routes fail
   • DTo send all traffic with no more specific route to a designated next hop, such as an internet gateway
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   How do dynamic routing protocols typically respond when a link in the network fails?

   • AThey immediately stop all routing updates until the link is restored
   • BThey automatically shut down the entire router to prevent routing loops
   • CThey rely on the administrator to manually reconfigure the affected routes
   • DThey detect the failure and recalculate routes, updating the routing table to use available paths
   Reveal Solution Discussion Select an answer first