Cisco ICND1 1.1: LAN Addressing

This course is included in our On-demand training solution.


Subnetworks, also known as subnets, are very common in all but the smallest of network environments. Subnetworks segment the network into smaller divisions that have their own addresses. Each host is represented by a unique IP address, which can be represented in either binary or decimal form for computers and users, respectively. In some cases, some of the bits that are used for the host portion of an IP address are “borrowed” to create the subnet address. The subnet mask defines which part of the IP address represents the network part. This course explains binary numbers and describes how subnets function and how they are computed.

Target Audience

Network administrators, network engineers, network managers, network designers, and project managers; individuals seeking the Cisco Certified Entry Network Technician (CCNET) certification and those individuals targeting the Cisco Certified Network Associate (CCNA) certification


Expected Duration

210 min.

Course Objectives

Understanding Binary Basics

  • describe the decimal and binary number systems
  • recognize how to convert decimal numbers to binary numbers
  • recognize how to convert binary numbers to decimal numbers
  • The Basics of Subnetting

  • describe subnetting basics
  • Subnetting Rules

  • recognize the rules of subnetting
  • Subnetting First Steps

  • identify classful and classless masks
  • describe how many subnets are created in a given scenario
  • Creating Subnet and Host Addresses

  • describe how to create subnet addresses
  • describe how to create host addresses
  • Introduction to Calculating Ranges

  • recognize how to calculate ranges
  • Calculating Ranges using Worked Examples

  • describe how to calculate ranges in given scenarios
  • Assigning IP Addresses To Routers – Part 1

    Assigning IP Addresses To Routers – Part 2

    Assigning IP Addresses To Routers – Part 3

    Assigning IP Addresses To Routers – Part 4