Disclaimer: this application is not a subnetting course.
Ipv4 Addresses are limited That's why people do subnetting to limite ipv4 exhaustion. That's why cisco network administrator certification has a huge portion of question that focus on ipv4 subnetting. To learn subnetting is to learn ccna.
This App is a subnetting practice tool, that can help you get your ccna certification.
The app has regular questions about IP addresses along with questions about FLSM, VLSM, and Suppernetting.
by using this app to practice every day you will never need an ip network mask calculator ,a vlsm calculator, network id and host id calculator or any other Ip network calculator to answer ccna questions on the ccna exam.
You can use this application along with other ccna courses to benefit more.