Why within an active directory environment, does DNS reside on many servers while DHCP resides just on one?

Answer 1

By its nature of design, DNS is a distributed service so obviously it can but depending on load spread to many servers, while DHCP is obviously need to be singular to manage its pool of IPs.

Answer 2

Hi

There are two factors, one is DNS and other one is DNS forwarder, basically lot of small location does not run the DNS server locally and they use the forwarder to send the info to DNS.

Sites require DNS locally at times is to reduce the info access speed.. if we have to rely on DNS forwarder then there might be a huge delay in resolvoing the host names......