For each Mask Conversion Drill post, you’ll find a mix of DDN and prefix masks. Your job is to convert each to a binary mask first and then to the other format.

For each Mask Conversion Drill post, you’ll find a mix of DDN and prefix masks. Your job is to convert each to a binary mask first and then to the other format.

For each Mask Conversion Drill post, you’ll find a mix of DDN and prefix masks. Your job is to convert each to a binary mask first and then to the other format.

For each Analyzing IP Networks post, you have several simple analysis tasks related to classful networks (that is, class A, B, and C networks.) Work on making this analysis automatic and second nature!

Today’s post just lists the answers to the Mask Design drill #2. The drill lists some basic requirements for a number of hosts per subnet, and a number of subnets, and a network class. Your job: [...]

Here’s another mask design drill, with the same idea as the previous two posts (chronologically speaking). For those of you with my ICND1 book, Chapter 16 spells out the details, and you can just [...]

Today’s post just lists the answers to the Mask Design drill #1. The drill lists some basic requirements for a number of hosts per subnet, and a number of subnets, and a network class. Your job: [...]

Today’s post answers the five questions in a previously posted exercise. What’s it about? Someone came before us at most every company and made up an IP addressing plan. These exams test our [...]

Someone came before us at most every company and made up an IP addressing plan. These exams test our ability to look at that plan and decipher what the plan does, including answering this [...]