单项选择题
A. Static NAT
B. Port loading
C. NAT Overloading
D. Dynamic NAT
E. None of the above
单项选择题 A TestKing PC has the IP address 172.16.209.10 /22. What is the subnet of this address?（）
多项选择题 Your ISP assigned you a full class B address space. From this, you need at least 300 sub-networks that can support at least 50 hosts each. Which of the subnet masksbelow are capable of satisfying your needs?（）
单项选择题 How many usable IP addresses can you get from a conventional Class C address?（）