And now.. the answers!
1. Watch this one - there's a big difference between an IGP summary and a BGP summary.
With BGP, both the summary route and the routes that were summarized will be advertised with the aggregate-address command. To advertise only the summary, use the summary-only option with that command.
2. (A). In the BGP path selection process, the 3rd factor is the preference of a locally originated route.
3. (C, E). A BGP next-hop address of 0.0.0.0 can indicate a locally originated route, and it can also indicate a route learned via route redistribution.
4. A question mark for a BGP origin code indicates a route that was learned via route redistribution.
5. (A). The BGP attribute AS_PATH is specifically designed to prevent routing loops. If a BGP-speaking router received an update with its own AS number in the path, that router knows there's a loop!
Here are some more CCNP ROUTE tutorials and videos to help you conquer this tough exam! Enjoy!
CCNP ROUTE OSPF And Redistribution Video
CCNP ROUTE Tutorial on BGP Local Preference
CCNP ROUTE Videos On My YouTube Channel
CCNP ROUTE Tutorials And Videos
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