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CCIE Service Provider Written v4.1 (400-201) Exam Questions

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CCIE Service Provider Written v4.1 (400-201)

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Question 159:

An operations engineer from AS 2000 must deploy this inbound routing policy. ✑ Based on RFC1998, modify the local-preference value for prefixes containing BGP community values 2000.90 and 2000:110 ✑ Strip any BGP community of the BGP prefixes received from customers that are in the range between 2000:1 and 2000:2000. Any other BGP community values must not be removed ✑ Apply 2000:1003 BGP community value, which indicates that the BGP prefix is learned from a customer Which configuration accomplishes this BGP routing policy? 

Answer options:

A. route-policy CUSTOMER-COMMUNITIES if community matches-any (2000:90) then set local-preference 90 elseif community matches-any (2000:110) then set local-preference 110 endif if community matches-any (2000:[1..89], 2000:[91..109], 2000:[111..2000]) then delete community all endif set community (2000:1003) end-policy
B. route-policy CUSTOMER-COMMUNITIES if community matches-any (2000:90) then set local-preference 90 elseif community matches-any (2000:110) then set local-preference 110 endif delete community in (2000:[1"¦2000]) set community (2000:1003) end-policy
C. route-policy CUSTOMER-COMMUNITIES if community matches-any (2000:90) then set local-preference 90 elseif community matches-any (2000:110) then set local-preference 110 endif set community (2000:1003) additive delete community in (2000:[1..2000]) end-policy
D. route-policy CUSTOMER-COMMUNITIES delete community in (2000:[1:2000]) if community matches-any (2000:90) then set local-preference 90 elseif community matches-any (2000:110) then set local-preference 110 endif set community (2000:1003) additive end-policy