ccna

IPv4 ~ Subnetting Reference Guide (CIDR)

CIDR  Subnet Mask   Addresses  Wildcard /32  255.255.255.255 1 0.0.0.0 /31  255.255.255.254 2 0.0.0.1 /30  255.255.255.252 4 0.0.0.3 /29  255.255.255.248 8 0.0.0.7 /28  255.255.255.240 16 0.0...

OSI Networking Model

What is the OSI Model? The OSI (Open Systems Interconnection) Reference Model is a conceptual framework that describes the functions of a networking or telecommunication system. The model uses 7 defin...

IP Subnetting – Minus 256 Technique

This presupposes a solid knowledge of binary and IP Addressing conventions. Rule 1 Remember that the first octet only ever designates the class of IP.  (ie. Class A, Class B or Class C) Rule 2 The fi...

IPv6 ~ Subnetting Reference Guide

Internet Protocol version 6 (IPv6) is the latest version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and ro...