Network Protocols

0. Describe OSPF in your own words.

1. OSPF areas, the purpose of having each of them

2. Types of OSPF LSA, the purpose of each LSA type

3. What exact LSA type you can see in different areas

4. How OSPF establishes neighboor relation, what the stages are

5. If OSPF router is stucked in each stage what the problem is and how to troubleshoot it

6. OSPF hierarchy in the single or multi areas. Cool OSPF behavior in broadcast and nonbroadcast

7. Draw the diagram of typical OSPF network and explain generally how it works, DR, BDR, election, ASBR, ABR, route redistribution and summarization

8. How it works and the purpose

9. Diff types (SSTP, MSTP, RSTP) Cisco - PVST/PVST+

10. root election

11. Diff. port stages and timing for convergence

12. Draw the typical diagram and explain how diff types of STP work

13. What ports are blocking or forwarding

14. How it works if there are topology changes

15. Draw the typical network diagram you have to deal with

16. explain how it works

17. What part of it you are responsible

18. firewall, what is that, how it works, how it is diff from ACLs

19. What problems with the network you had had and how you solved it.