Module 1
Networking Basics
What a network actually is, the three devices you will meet in every lab, and a method for finding a fault rather than guessing at one.
In this module
- Describe what a network does and why devices need addresses
- Tell a host, a switch and a router apart by what each one decides
- Follow a repeatable troubleshooting method instead of changing things at random
Activities
What is a network?
Two devices, one link, and the problem addressing solves.
Hosts, switches and routers
The three devices in every lab, and the decision each one makes.
A method for finding faults
A fixed sequence that narrows a fault down, used by every lab that follows.
Knowledge check - the basics
Six questions on devices, addresses and links.
Lab: an interface is down
The simplest fault there is. Find the interface that is administratively down and bring it up.
Sign in to take the knowledge checks, run the labs and track your progress.
Curriculum topics
Each topic page lists every lesson, quiz and hands-on lab that covers it, plus how it maps onto the CCNA and Network+ blueprints.