11.6.6 Lab – Calculate IPv4 Subnets (Answers)

 

11.6.6 Lab – Calculate IPv4 Subnets 

Objectives Part 1: Calculate IPv4 Subnetting

Calculate IPv4 Address Subnetting in Part 2

Context / Scenario

Understanding how IPv4 networks function requires the ability to deal with IPv4 subnets and derive network and host information based on a given IP address and subnet mask. The first section is intended to remind how to get network IP address information from an IP address and subnet mask pair. When provided with an IP address and subnet mask, you may deduce further information about the network.

Note from the instructor: This task may be completed in class or as homework. If the task is completed in class, you may opt to have students work alone or in pairs. It is advised that the first issue be solved in class to provide assistance to students on how to continue with the remainder of the assignment.

Cisco owns the public IP addresses used in this lab.

Question of Reflection
What is the significance of the subnet mask when examining an IPv4 address?
The subnet mask specifies the network, the number of host bits, the number of hosts, and the broadcast address. Observing an IPv4 address in isolation reveals nothing. The subnet mask is required to populate all necessary fields.