CCNA Day 2 IPv4 Addressing Part 4 Subnet Mask
Автор: Netforge Zone
Загружено: 2025-09-11
Просмотров: 122
In this CCNA Day 2 lesson, we break down one of the most important concepts in IPv4 addressing: the subnet mask. You’ll learn exactly how subnet masks separate the network portion from the host portion, how binary masking works, why barriers between 1s and 0s define network boundaries, and how default masks for Class A, B, and C are derived. We also walk through how subnet masks determine the number of available networks and hosts, and how binary structure affects device communication across sections. This video sets the foundation you need before learning custom subnetting and VLSM in upcoming lessons—essential knowledge for any CCNA candidate or network engineer.
#CCNA #IPv4 #SubnetMask #Networking #ciscocommunity
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