Problem
a) Identify some use cases when a caching-only DNS server should be used and why this would be the best choice for the use case.
b) Identify some use cases for a DNS server to be configured as a forwarder and why this would be the best configuration for the use case.
c) Identify some use cases when a DNS server should be configured as an Active Directory Integrated Zone and why this would be the best configuration for this use case.
d) Discuss the difference between a conditional forwarder and a stub zone. Identify some use cases for each and discuss when these would be the best configuration for the use case. please include internet reference