Part 1 · Week 1
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.
Week objectives
- Understand network components
- Understand OSI/TCP-IP models
- Compare TCP and UDP
- Understand Ethernet, MAC, ARP, IP
- Start IPv4 addressing
Lessons
35 min
What Actually Happens When Two Devices Communicate
Network Fundamentals
Open lesson
30 min
OSI Model Without Memorization Theater
Network Fundamentals
Open lesson
32 min
TCP vs UDP
Network Fundamentals
Open lesson
35 min
Ethernet, MAC Addresses, and ARP
Network Access
Open lesson
30 min
IPv4 Addresses and Private Ranges
IP Connectivity
Open lesson
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.