This is a great tool for networking students as well as the network administrators or network IT engineers who are working towards their certifications such as, CCNA, CCDA, CCNP, CCIE etc.

This app has following operating features:
- Generates an IPv4 address along with subnet mask as a Question.
- User can enter their answers for the Network address, Broadcast address, First host and Last host in the respective fields.
- User can check the individual answer by 'Check' button.
- 'Help' returns the correct answer to cross check the answer written.

Advantages
★ No additional special permissions required.
★ No Internet connection required.
★ No ads.
★ Symbolic price.

Languages
English - Spanish.

☆☆☆☆☆
Number 1 best-selling app in many Google Play countries.

http://Gaak.co