As the network engineer, you are asked to design an IP subnet plan that calls for 5 subnets. The largest subnet needs 25 hosts. Management requires that a single mask must be used throughout the Class C network. Which of the following is a public IP network and mask that would meet the requirements?

A) 192.177.4.0 / 255.255.255.192
B) 192.177.4.0 / 255.255.255.224
C) 192.177.4.0 / 255.255.255.240
D) 192.177.4.0 / 255.255.255.248

B
Explanation: B) The correct answer is 192.177.4.0 / 255.255.255.224 because the only mask that would fit the requirements of 5 subnets and 25 hosts is 255.255.255.224, or /27, which would give you 8 subnets and 30 hosts per subnet.

Computer Science & Information Technology

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When this is run, we sometimes get the following puzzling output: Array elements 9 and 10 are out of order. Even more puzzling, sometimes we don’t get this output. Why?

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