What is local preference and metric in BGP?

Related questions

1. What is the default local preference BGP?
2. Why BGP is called path vector protocol?
3. Can we use local preference outside the autonomous system?
4. Which TCP port does BGP use?
5. What is the difference between local preference and Med?
6. What is next hop self in BGP?
7. How does BGP local preference work?
8. What is route map in BGP?
9. What is cluster list in BGP?
10. Does BGP use TCP or UDP?

Tags

1. #remember
2. #chosen
3. #higher
4. #preference
5. #states
6. #local
7. #shortest
8. #algorithm
9. #studies
10. #default
11. #preferred