Advanced BGP Features JN0-664 Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A service provider wants to prevent its customers from advertising the provider's own prefixes back to it. The provider has a list of its own prefixes. What is the most efficient way to implement this using routing policies on the provider's edge router?

   • AUse the 'as-path' regular expression to match the provider's AS number and reject the routes.
   • BConfigure a static route for the provider's prefixes with a next-hop of discard.
   • CApply an import policy to the customer BGP session that rejects routes matching the provider's prefix list.
   • DApply an export policy to the customer BGP session that rejects routes matching the provider's prefix list.
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2. 17foundation · easy

   Which Junos configuration statement is used to apply a routing policy to control BGP route advertisement to a peer?

   • Aadvertise policy-name
   • Breceive policy-name
   • Cexport policy-name
   • Dimport policy-name
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4. 18application · medium

   A network operator is troubleshooting a BGP routing issue and wants to see only the routes that are being received from a specific peer and have a specific community. Which Junos operational command and policy combination would be most effective?

   • AUse 'show bgp neighbor <peer> received-routes' and then filter by community.
   • BUse 'show route receive-protocol bgp <peer> community <community>'.
   • CApply a routing policy to the peer that tags routes with the community, then use 'show route community <community>'.
   • DUse 'show route protocol bgp' and manually filter the output.
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5. 19foundation · easy

   Which routing policy action is used to modify the local preference attribute of a BGP route?

   • Aset local-preference 200
   • Bset origin 200
   • Cset weight 200
   • Dset metric 200
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6. 20foundation · easy

   What is the primary purpose of BGP Flowspec in a service provider network?

   • ATo propagate traffic filtering and rate-limiting rules across the network via BGP
   • BTo provide a secure tunnel for traffic between BGP peers
   • CTo automatically reroute traffic around congested links using BGP path selection
   • DTo replace the need for access control lists by filtering traffic based on Layer 2 MAC addresses
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