One of the most intimidating but extremely important subjects on the CCENT/CCNA or ICND1 exam is subnetting.
If you started listening from basic IP addressing which is covered in our list of topics from the beginning and have understood everything, then you won't have any problem understanding subnetting.
I'm going to try and explain subnetting as simply as possible and hope to answer all your questions.
Now, because subnetting is a big topic to talk about, I've split it into a few sections. Logically, as you move on to higher sections, the concepts and material difficulty will increase:
The guide will help you in calculating subnet boundaries and valid host address fast enough for use in a Cisco CCNA or ICND1 exam.
Senior Technical Instructor/Network Consultant
Sikandar Shaik, a dual CCIE (RS/SP# 35012), is a highly experienced and extremely driven senior technical instructor and network consultant. He has been training networking courses for more than 10 years, teaching on a wide range of topics including Routing and Switching, Service Provider and Security (CCNA to CCIE). In addition, he has been developing and updating the content for these courses. He has assisted many engineers in passing out the lab examinations and securing certifications.
Sikandar Shaik is highly skilled at designing, planning, coordinating, maintaining, troubleshooting and implementing changes to various aspects of multi-scaled, multi-platform, multi-protocol complex networks as well as course development and instruction for a technical workforce in a varied networking environment. His experience includes responsibilities ranging from operating and maintaining PC's and peripherals to network control programs for multi-faceted data communication networks in LAN, MAN and WAN environments.
Sikandar Shaik has delivered instructor led trainings in several states in India as well as in abroad in countries like China, Kenya and UAE. He has also worked as a Freelance Cisco Certified Instructor globally for Corporate Major Clients.