New Skills

New Training: IP Addressing and Subnetting

by Team Nuggets
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Published on March 15, 2021

In this 19-video skill, CBT Nuggets trainer Keith Barker walks you through the components of IP addressing, such as IPv4 subnetting and IPv6 concepts. Watch this new networking training.

Watch the full course: CompTIA Network+

This training includes:

  • 19 videos

  • 2.0 hours of training

You’ll learn these topics in this skill:

  • IP Addressing and Subnetting: IPv4 Overview

  • IP Addressing and Subnetting: Binary Basics

  • IP Addressing and Subnetting: Converting Decimal to Binary

  • IP Addressing and Subnetting: Converting Binary to Decimal

  • IP Addressing and Subnetting: The IP Mask

  • IP Addressing and Subnetting: Practice Using a Different IP Mask

  • IP Addressing and Subnetting: Borrowing Host Bits

  • IP Addressing and Subnetting: Practicing the Finger Game

  • IP Addressing and Subnetting: Identifying New Subnets

  • IP Addressing and Subnetting Exercise 1: Identify the New Subnets

  • IP Addressing and Subnetting Exercise 2: Identify the New Subnets

  • IP Addressing and Subnetting: ID Valid Host Addresses on a Subnet

  • IP Addressing and Subnetting Exercise 1: ID Valid Host Addresses

  • IP Addressing and Subnetting Exercise 2: ID Valid Host Addresses

  • IP Addressing and Subnetting: Calculate the Number of Hosts per Subnet

  • IP Addressing and Subnetting: Determine the Subnet Based on a Host’s IP Address

  • IP Addressing and Subnetting: Planning and Assigning IP Addresses

  • IP Addressing and Subnetting: Test Your IPv4 Knowledge Lab

  • IP Addressing and Subnetting: IPv6 Concepts

Why is a Subnet Mask Needed For An IP Address

IP addresses are complicated bits of data. They are often compared to physical street addresses for a house, and that analogy works perfectly. Think of it this way. A street address for a physical house has information that says where that house is as well as which city it belongs to. In this way, IP addresses do the same thing but with much less data. Each IP address includes information that states which device that address belongs to as well as which network that address is for.

The subnet mask for an IP address states which part of the IP address is for the network and which part of the address belongs to the device. This is needed since the IP space can be segmented for various uses. For instance, a range of IPv4 addresses can be segregated so it can include more or fewer addresses in a single address space.

Because IP spaces can vary so drastically, the subnet mask is needed to say how a singular IP address is divided to differentiate the part of the IP that belongs to the network or the device it is assigned to.


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