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  3. A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?

A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?

admin2009-05-19  22
问题 A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?
选项 A、172.16.42.0
B、172.16.107.0
C、172.16.208.0
D、172.16.252.0
E、172.16.254.0
答案C
解析 Explanation:
172.16.209.10/22 translates to 10101100.00010000.11010001.00001010 in binary form.
The network portion is 22 bits, so after the logical AND comparison the network address translates to 10101100.00010000.110100001.00001010. Converting the network portion to decimal results in the address 172.16.208.0/22
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