Describe BGP Operations SONIC-DEPLOY Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A network engineer is configuring BGP on a Dell SONiC switch to filter routes received from a customer. The engineer wants to allow only the customer's /24 prefix and deny all other routes. Which configuration approach should be used?

   • AUse a route map to set a community on the customer's routes.
   • BApply an inbound prefix list that permits the customer's /24 and denies all else.
   • CApply an outbound prefix list on the customer's router.
   • DUse an AS-path filter to permit only the customer's AS.
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A network engineer is designing a BGP network with multiple routers in the same AS. The engineer wants to ensure that all routers have a consistent view of the routing table without requiring a full mesh of iBGP sessions. Which solution should be used?

   • AConfigure a full mesh of iBGP sessions.
   • BUse BGP confederations.
   • CUse eBGP sessions between all routers in the same AS.
   • DConfigure a route reflector and designate clients.
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   A network engineer is troubleshooting a BGP issue on a Dell SONiC switch. The switch is receiving a route from an eBGP peer, but the route is not being installed in the routing table. The engineer verifies that the next hop is reachable and that the route is not filtered. What else should the engineer check?

   • AVerify that the local preference is set to a value higher than 100.
   • BVerify that the AS path is not longer than the maximum allowed.
   • CVerify that the route is not suppressed by route flap damping.
   • DVerify that the MED is not set to a value that causes the route to be ignored.
   Reveal Solution Discussion Select an answer first
5. 4expert · hard

   A company has two internet service providers (ISPs) for redundancy. The network engineer wants to prefer one ISP for all outbound traffic. Which BGP attribute should be manipulated on the routes received from the ISPs to influence outbound traffic?

   • ALocal preference on the routes received from the ISPs.
   • BMED on the routes advertised to the ISPs.
   • CAS path prepending on the routes advertised to the ISPs.
   • DCommunity attribute on the routes received from the ISPs.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which BGP filtering method matches routes based on the sequence of AS numbers in the path?

   • ARoute map
   • BCommunity filter
   • CPrefix list
   • DAS-path filter
   Reveal Solution Discussion Select an answer first