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.
5 activities~42 min
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
Lesson
What is a network?
Two devices, one link, and the problem addressing solves.
6 min
Lesson
Hosts, switches and routers
The three devices in every lab, and the decision each one makes.
8 min
Lesson
A method for finding faults
A fixed sequence that narrows a fault down, used by every lab that follows.
8 min
Lab
Lab: an interface is down
The simplest fault there is. Find the interface that is administratively down and bring it up.
15 min
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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.