Configure and Verify the Operation of BGP POWERSWITCH-DATA-CENTER-DEPLOY Practice Questions (Page 1)

Questions 1–5

1. 1expert · medium

   A network administrator has two eBGP links to different providers. The administrator wants to prefer one link for outbound traffic to all destinations. The current BGP table shows that some routes are learned from both links, and the administrator wants to ensure that the preferred link is always used. Which configuration will achieve this goal?

   • ASet a higher local preference on all routes received from the preferred link.
   • BUse AS path prepend on the non-preferred link.
   • CConfigure a static route for all destinations.
   • DSet a lower MED on routes advertised out of the preferred link.
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A Dell PowerSwitch in AS 65001 receives two routes to 10.0.0.0/8. Route A is learned from an iBGP peer with a local preference of 150 and an AS path of '65002'. Route B is learned from an eBGP peer with a local preference of 120 and an AS path of '65002 65003'. The next hop for Route A is reachable via an IGP route. The next hop for Route B is directly connected. Which route will be selected as the best path?

   • ARoute A, because it has a higher local preference.
   • BRoute A, because the AS path is shorter.
   • CRoute B, because it is learned from an eBGP peer.
   • DRoute B, because the next hop is directly connected.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A network engineer is configuring BGP on a Dell PowerSwitch. The neighbor relationship is established, but the engineer notices that the session flaps every few minutes. The 'show ip bgp neighbors' output shows that the hold timer expires. What is the most likely cause?

   • AThe TCP connection is unstable.
   • BThe keepalive timer is too short.
   • CThe update-source is misconfigured.
   • DThe remote AS number is incorrect.
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A data center has two routers in AS 65001 connected to two routers in AS 65002. The engineer wants to ensure that routes learned from AS 65002 are not propagated back to AS 65002 through the other eBGP peer. Which BGP mechanism prevents this loop?

   • ANext-hop-self
   • BSplit horizon
   • CMaximum-paths
   • DAS path loop prevention
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6. 5foundation · easy

   Which BGP attribute is used to influence inbound traffic by indicating the preferred path to an AS?

   • AWeight
   • BMED (Multi-Exit Discriminator)
   • CAS path length
   • DLocal preference
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