Sql: modify the search expression for the invoiceduedate from the solution for exercise two. rather than 30 days from today, return invoices due before the last day of the current month. (be sure also to compare the year! )

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 

Declatrations  glad to ya out sir

The correct answer is take periodic breaks and alternate between tasks.