Over the years, I’ve created a bundle of about 75 lab exercises here at the blog, called Config Labs. The idea is to read the web page for the lab, then do the lab, and then check your [...]

This post presents questions that ask you to analyze design data about a network and then choose the one subnet mask to use for all subnets. If a company uses one subnet mask for all subnets of [...]

Cisco plans to release start testing based on the CCNA 200-301 Version 1.1 blueprint starting August 20, 2024, replacing the former V1.0 blueprint. Yes, we have new books out mid-year 2024 that [...]

Hi all you regular blog users, I’m sure you know we released new CCNA Official Cert Guides in mid-year 2024. Those books impact this blog because the blog organizes its content to match the [...]

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

This post asks you to analyze the choice of subnet mask in a network. If a company uses one subnet mask for all subnets of one classful network, you can analyze the address structure as three [...]

These practice posts focus on the single most important subnetting process: Find the four defining facts about a subnet based on one address and mask that resides in that network. Your first goal [...]