Please answer following short parts for Upvote (please answer all)

a) What DHCP setting determines how often a DHCP address changes?

b) What is a Static and Dynamic IP address?

c) Explain the role of routers, email servers, firewalls, and authentication servers in addressing the problems associated with DHCP and Network Translation to using network translation in relationship to the analysis of network forensics evidence.

d) Explain the importance of time synchronization for routers, email servers, firewalls, and authentication servers in addressing the problems associated with DHCP and Network Translation to using network translation in relationship to analysis of network forensics evidence.

e) What is purpose of DNS resolution