Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?A．255.255.0.0.B．255.255.128.0.C．255.255.224.0.D．255.255.254.0.E．None of the above

题目

Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?

A．255.255.0.0.

B．255.255.128.0.

C．255.255.224.0.

D．255.255.254.0.

E．None of the above

参考答案和解析

正确答案：D
解析：Explanation:Toobtain459hoststhenumberofhostbitswillbe9.Thiscansupportamaximumof510hosts.Tokeep9bitsforhostsmeansthelastbitinthe3rdoctetwillbe0.Thisgives255.255.254.0asthesubnetmask.

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Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?A．255.255.0.0.B．255.255.128.0.C．255.255.224.0.D．255.255.254.0.E．None of the above

题目

参考答案和解析

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