All these are questions that I got from the CCO BCSN tests.
1. Which command allows Router A to advertise subnet 10.1.0.0/24 in BGP?
A. network 10.1.0.0
B. network 10.1.0.0 255.255.0.0
C. network 10.1.0.0 mask 255.255.0.0
D. network 10.1.0.0/16
E. network 10.1.0.0 prefix 16
I have my answer as A. B,D, and E all have the wrong syntax. Is C right? I
know that the mask length for C is 16.
2. What is the function of the BGP atomic aggregate attribute?
A. To indicate that the originating router has aggregated the routes
B. To specify the BGP router ID and AS number of the router that performed
the route aggregation
C. To specify the AS number of the router that performed the route
aggregation
D. To specify the AS number of the router that performed the route
aggregation and the AS numbers of the non-aggregated routes
Answer: A.
I have searched the CISCO web site and cannot find information on BGP atomic
aggregate attribute.
Finally, how do prefix lists have support for incremental updates? Does
anyone have a simple explanation for this?
I appreciate your assistance.
Peter.
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