Network Foundations and IPv4 Basics
What you must be able to do by the end of this week is listed below. Complete lessons, labs, interactive tools, and the assessment checkpoint.
Build the mental model — devices, layers, and addressing
5 study days · ~7h 30m total · most sessions target ~90 minutes
Key topics
Videos
- primaryJeremy's IT LabDuration TBDNetwork Devices (Day 1)
- reinforcementDavid BombalDuration TBDWhat is a Network? (Video #1)
Further study
Interactive tools
Practice
Open lesson: What Happens When Devices Communicate — sketch your home network.
Quick review
Label each device as L2 or L3 and name one job it performs.
Week checkpoint
Complete Week 1 quiz and lab — explain encapsulation across three layers without notes.
Suggested practice
10 mixed fundamentals questions from /exams/practice
Week tools
Week objectives
- Understand network components
- Understand OSI/TCP-IP models
- Compare TCP and UDP
- Understand Ethernet, MAC, ARP, IP
- Start IPv4 addressing
Lessons
What Actually Happens When Two Devices Communicate
Network Fundamentals
OSI Model Without Memorization Theater
Network Fundamentals
TCP vs UDP
Network Fundamentals
Ethernet, MAC Addresses, and ARP
Network Access
IPv4 Addresses and Private Ranges
IP Connectivity
Training videos
Jeremy's IT Lab lectures (also embedded in lessons) plus supplemental videos from the Free CCNA 200-301 course playlist. Watch in order or jump to the topic you are studying.
Lesson pages embed Jeremy's IT Lab videos inline. Supplemental David Bombal videos from the linked playlist appear here and in matching lessons — all credited to their respective channels.
Interactive tools
Labs & review
Labs
1 lab(s) assigned this week
Assessment
week1-basics-quiz — original concept-based questions only.