ANSWER ALL

10. Discuss IPv4 addresses

a. Structure, how many there are, why initial allocation was wasteful

b. Know the IP address classes, and # of networks and hosts available in each

c. Know what IPv4 exhaustion means

11. Explain how NAT works, specifically PAT

a. Know what a NAT table looks like

b. Understand what NAT does to IPv4 addresses

c. Know why NAT is used, and what it means for IPv4 exhaustion

d. Know NAT IP address ranges for all three classes

e. Understand what inside and outside mean in terms of NAT

f. Describe port forwarding, why its used, and limitations to using it

12. Explain the concept of subnetting.

a. Explain why subnetting would be used in an organization

b. Explain how subnet sizes would be calculated (not math, but why from an organizational standpoint)