Appendix G. Practice for Chapter 16: Designing Subnet Masks

Practice Problems

This appendix lists problems. Each problem includes a short set of requirements regarding how a particular classful network should be subnetted. The requirements include the classful network, the number of subnets the design must support, and the number of hosts in each subnet. For each problem, supply the following information:

• The minimum number of subnet and host bits needed in the mask to support the design requirements

• The dotted-decimal format mask(s) that meet the requirements

• The mask you would choose if the problem said to maximize the number of subnets

• The mask you would choose if the problem said to maximize the number of hosts per subnet

To find this information, refer to Chapter 16 of CCENT/CCNA ICND1 640-822 Official Cert Guide. (If you are reading this as a PDF that came with CCNA ICND2 640-816 Official Cert Guide, you will find a copy of the ICND1 book’s Chapter 16, “Designing Subnet Masks,” in the same location where you found this PDF.)