You work for ISP A. Customers of both ISP B and ISP C must be able to reach all of your
customers, but your network must not allow transit traffic between ISP B and ISP C.
Referring to the exhibit, which two methods could you use? (Choose two.)
Use local preference to prefer the proper routes.
Use the well-known no-transit community.
Use policy to filter routes on AS number.
Use communities to identify and filter routes.