While preparing for the CCNA certification i Found this question:
You work as a network administrator. You are configuring a router to provide Internet access. The ISP has provided you with six public IP addresses of198.18.131.65, 198.18. 131.66, 198.18. 131.67, 198.18. 131.68,198.18. 131.69, and, 198.18. 131.70. and you have 62 hosts that need access tothe Internet simultaneously. The hosts in your LAN have been assignedprivate space addresses in the range of 192.168.117.129 - 192.168.117.190.
The following have already been configured on the router:
?? The basic router configuration
?? The appropriate interfaces have been configured for NAT inside an NAT