| 1: | In a totally stubby area, which routes are not propagated into the area? |
| 2: | Can a virtual link contain a stub area? |
| 3: | An ABR must be resident in which area? |
| 4: | What LSAs will the ABR forward? |
| 5: | State two advantages in creating areas in OSPF. |
| 6: | What is an external route, and on which type of router will this route be introduced? |
| 7: | Why is the use of summarization important in the design of OSPF? |
| 8: | How many routers does Cisco suggest is the limit to have in a single area? |
| 9: | What are the restrictions to be considered in the creation of a stub area or a totally stubby area? |
| 10: | A virtual link in OSPF is used to solve what problem? |
| 11: | State one disadvantage for making an NBMA cloud Area 0. |
| 12: | State one advantage in making the centralized routers and network resources dwell in Area 0 while the Frame Relay cloud and the stub remote LANs reside in satellite stub areas. |
| 13: | How does creating a number of areas in OSPF reduce the number of SPF calculations? |
| 14: | How does a stub area differ from the backbone area? |
| 15: | How does a totally stubby area differ from a stub area? |
| 16: | State the different LSA types. |
| 17: | Where does the backbone router reside, and what is its function? |
| 18: | There are two types of summarization. What are they? |
| 19: | For how many LANS does Cisco suggest a router should serve as a DR or a BDR? |
| 20: | Which router type creates LSA Types 3 and 4? |