As the network engineer, you are asked to design an IP subnet plan that calls for 5 subnets. The largest subnet needs a minimum of 5000 hosts. Management requires that a single mask must be used throughout the Class B network. Which of the following is a public IP network and mask that would meet the requirements?
A) 152.77.0.0/19
B) 152.77.0.0/18
C) 152.77.0.0/21
D) 152.77.0.0/17
A
Explanation: A) The correct answer is 152.77.0.0/19 because the only mask that would fit the requirements of 5 subnets and 5000 hosts is /19, or 225.255.224.0, which provides 8 subnets and 8190 hosts per subnet.
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