1. How would you organize a network for an organization that had five departments? Where would you place the servers, both physically and logically? Specify the types of servers (e-mail, web, application, database, etc.) and provide some justification for your decisions?
2. What is DNS? and what is hosts file used for?
3. What actions can a network or systems administrator take to ensure the security of an organization's resources on the LAN? Linux servers and workstations use a service called iptables to implement a firewall. Do some research on this service and discuss how it enhances computer security?
4. Why do we have private network addresses?