I am working at two branch offices and have been tasked with where to place Active-Directory Integrated DNS Servers and what type to use. One of the branch offices is very small (maybe 5 users) and has very slow network connectivity. Do I need a DNS Server and, if so, which type of zone should it host? The second branch office is much larger (about 30 users) and has better network connectivity. Does this office need a DNS Server and, if so, what type of zone would you recommend?