| 1. | What is the format of OSPF RIDs and AIDs? |
| 2. | What is the significance of OSPF AID 0.0.0.0? |
| 3. | How are IS-IS AIDs and SysIDs derived? |
| 4. | What is the format of an IS-IS NET? |
| 5. | What information is carried in OSPF Hellos? |
| 6. | What is the usual OSPF hello interval on LAN interfaces, as suggested by RFC 2328? |
| 7. | What is the usual OSPF RouterDeadInterval, as suggested by RFC 2328? |
| 8. | What information is carried in an IS-IS LAN Hello message? |
| 9. | What information is different in an IS-IS Point-to-Point Hello from a LAN Hello? |
| 10. | In what way is an IS-IS Holding Timer the same as an OSPF RouterDeadInterval, and in what way is it different? What is the normal value of this timer? |
| 11. | What TLVs are carried in IS-IS Hellos, and what is the purpose of each? |
| 12. | What is the purpose of the Dynamic Hostname Exchange extension to IS-IS? |
| 13. | What is meant by a "full" OSPF adjacency? |
| 14. | What is the function of the IS Neighbors TLV in forming an IS-IS adjacency? |
| 15. | In what way does a receiving router treat the Area Addresses TLV differently in an L1 LAN Hello and an L2 LAN Hello? |
| 16. | Where is a Three-Way Adjacency TLV used, and why? |
| 17. | What does it mean if the adjacency state of an IS-IS neighbor is Up but the three-way adjacency state of the same neighbor is Down? |
| 18. | What is a pseudonode, and what is its significance to an SPF tree? |
| 19. | What is a designated router (or designated IS), and what are its two basic duties? |
| 20. | How do the router priority and RID values effect the OSPF DR/BDR election process? Under what circumstances do these two values not effect a DR/BDR election? |
| 21. | In what five ways, related to designated routers, does IS-IS behave differently on a broadcast network than OSPF? |
| 22. | How do the priority and SNPA values effect the election of an IS-IS DIS? |
| 23. | What are the five OSPF network types? |
| 24. | What network types are supported by IS-IS? |
| 25. | What information is recorded in the OSPF interface database for each OSPF interface on a router? |
| 26. | When an OSPF interface is in the Waiting state, what is it doing? How long will it remain in this state? |
| 27. | What does the DROther interface state indicate? |
| 28. | What information is recorded in the IS-IS interface database for each IS-IS interface on a router? |
