Advanced BGP Options JN0-650 Practice Questions (Page 10)

Questions 46–50

1. 46application · medium

   Your enterprise has two internet service providers. You want to tag routes learned from ISP-A with community 65000:100 and routes from ISP-B with community 65000:200. You then want to set a higher local preference for routes from ISP-A. You have already applied import policies on the edge routers. What is the most efficient way to apply the local preference based on the community?

   • AConfigure the local preference directly on the BGP neighbor session without using communities.
   • BUse a single routing policy with two terms: the first term matches community 65000:100 and sets local preference 200; the second term matches community 65000:200 and sets local preference 100.
   • CUse a policy that matches community 65000:100 and sets local preference 200, and another policy that matches 65000:200 and sets local preference 100, applying both in sequence.
   • DCreate a single policy that matches both communities and sets local preference to different values using a then clause with community match conditions.
   Reveal Solution Discussion Select an answer first
2. 47foundation · easy

   What is the main purpose of BGP add-path?

   • ATo increase the AS path length of routes to influence inbound traffic
   • BTo reduce the number of BGP sessions in an iBGP network
   • CTo suppress unstable routes from being advertised
   • DTo allow a BGP speaker to advertise multiple paths for the same prefix to a peer
   Reveal Solution Discussion Select an answer first
4. 48application · medium

   Your network advertises 200 individual /24 prefixes to your ISP. You want to reduce the number of prefixes advertised to the ISP to minimize the routing table size. You also want to ensure that the aggregate route is advertised even if some of the more specific routes are not present. What should you do?

   • ASet a lower MED on the /24 routes to make them less preferred.
   • BConfigure BGP route aggregation to advertise a single /16 route and suppress the more specific routes.
   • CUse BGP route filtering to reject the /24 routes on the outbound policy.
   • DConfigure BGP multipath to load-balance the /24 routes.
   Reveal Solution Discussion Select an answer first
5. 49foundation · easy

   Which of the following is an example of a BGP extended community?

   • AAS path
   • BRoute target (RT)
   • CMED
   • DLocal preference
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6. 50foundation · easy

   Which advanced BGP option is specifically designed to allow a router to advertise multiple paths for the same prefix to a peer?

   • ABGP multipath
   • BBGP route reflection
   • CBGP add-path
   • DBGP confederation
   Reveal Solution Discussion Select an answer first