Subnetting creates several interconnected networks under a single address space, viewing each section as a sub-network, or subnet, rather than a collection of independent networks. Initially, the subnetting related questions strike fear in the hearts of CCNA candidates. I completely understanding subnetting but not too confident that I can answer questions lightning fast. This is the mask that Cisco exams often give you. So place a 1 above each of the binary numbers like this: 1 1 1 1 1 1 1 1 128 64 32 16 8 4 2 1 Step 3 ADD the Mask to your happy chart Basically this is adding up each set of binary numbers. r/CompTIA holds no responsibility for certification nullification which may be caused by visiting links submitted to this subreddit.Īsking for, or posting links to Braindumps, Unauthorized reproduction of testing material, copyrighted material or other content that is in violation of the CompTIA Candidate Agreement will result in removal of post, up to being banned from this community. A subnet is a widely-used practice in network management that involves breaking up a network into sections. Basically Im going for the 802 exam in a few months, and Ive been told that time should be valued during the test and you should be able to pretty much subnet off the top of your head. Subnetting is taking host bits and making them network bits. Note Please be advised that the use of some of the links above may violate CompTIA's certification policies.

Subnetting chart during exam