What were the major drawbacks to adding sound to movies?
a. Image and sound recording devices were different
b. Microphone and amplification were primitive
c. Recoding and playback required access to electricity
d. All the above

Bis your answer toy your queston

That i would call a dead end, since you can't know that it's always possible to immediately reconnect (server could be down, lines between you and the server could be down), and even if it was this would take some time slipping the packages out your wan in the meantime.the solution to this problem rather like satras says to block wan access for those hosts, and if policy routing is being used you need to use the soltion found by fastlanejb in this thread:   the link to the problem forum 

Saves time and money, reduces responsibility, and offers more flexible hours