You Have a DX Connection and a VPN Connection as Backup

Multiple Choice

You have a DX connection and a VPN connection as backup for your 10.0.0.0/16 network. You just received a letter indicating that the colocation provider hosting the DX connection will be undergoing maintenance soon. It is critical that you do not experience any downtime or latency during this period. What is the best course of action?

A) Configure the VPN as a static VPN instead of dynamic.
B) Configure AS_PATH Prepending on the DX connection to make it the less preferred path.
C) Advertise 10.0.0.0/9 and 10.128.0.0/9 over your VPN connection.
D) None of the above.