| 1: | What are the two modes that can be used during IKE phase 1 negotiation? |
| 2: | What mode is used during IKE phase 2 negotiation? |
| 3: | How many messages are exchanged during main mode negotiation? |
| 4: | How many messages are exchanged during quick mode negotiation? |
| 5: | Which messages are used for peer authentication during main mode negotiation? |
| 6: | If an error occurs during IKE negotiation, what type of payload can be sent to inform the peer of the error? |
| 7: | If main mode negotiation fails during the exchange of the first two messages, what is likely to be the issue? |
| 8: | What are the three ways that one IPSec peer can authenticate another during IKE negotiation? |
| 9: | How many messages are exchanged during IKE aggressive mode? |
| 10: | How is aggressive mode negotiation supported on Cisco IOS routers? |
