World of Computer Networking Your CCNA start - What is a Network Mask?

The video tutorial explains network masks and their role in IP addressing. It covers the three main classes of IP addresses (A, B, and C) and their default masks, represented in slash notation. The tutorial discusses the division of IP addresses into network and host parts, and how network masks are represented in different notations, including prefix, decimal, and binary. It also explains how to determine if two hosts belong to the same network by comparing their network addresses.

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