Cisco CCNA Network Fundamentals – Final Chapters
Overview
This free course focuses on the core networking concepts covered in the later stages of CCNA Network Fundamentals. It is designed to help learners strengthen their understanding of how devices communicate across networks, especially at the TCP/IP, Data Link, and Ethernet levels.
The course takes a clear, step-by-step approach, making complex networking topics easier to understand. It works well both as a continuation for CCNA learners and as a standalone refresher for anyone wanting to better understand how networks actually function behind the scenes.
Course Snapshot
- Instructor: Kiel Martin
- Students enrolled: 56,739
- Content length: ~4 hours 43 minutes
- Difficulty level: Beginner to early-intermediate
- Language: English (auto captions available)
- Certification: ❌ Not included
- Cost: Free
- Access: Online streaming (Udemy free tutorial)
What This Course Actually Covers
Rather than focusing on device configuration, this course explains how network communication works at a protocol and frame level. It helps learners understand the logic behind networking concepts used in real-world environments and CCNA studies.
Key areas covered include:
- TCP/IP communication fundamentals
- How devices establish and manage connections
- Ethernet and Data Link layer behavior
- Network traffic flow inside LANs
Skills & Concepts You’ll Work With
TCP/IP & Transport Layer Basics
- Understanding the TCP/IP model
- How the Three-Way Handshake establishes TCP connections
- Differences between TCP and UDP communication
- Windowing and flow control concepts
Network Communication Concepts
- Sequence numbers and port numbers
- How one device communicates with another over a network
- Reliable vs. unreliable data transmission
LAN & Data Link Layer
- Common LAN devices and their roles
- What the Data Link layer is responsible for
- Ethernet fundamentals and frame-based communication
- Understanding CSMA/CD
Network Domains
- Broadcast domains explained
- Collision domains and how they affect traffic
- How switches and other devices influence network segmentation
Who This Course Is Best Suited For
- Beginners continuing CCNA Network Fundamentals studies
- Students who want deeper clarity on TCP/IP and Ethernet
- IT learners reviewing networking basics
- Aspiring network engineers building foundational knowledge
- Anyone seeking a free, structured networking refresher
Common Questions Learners Ask
Is this a full CCNA 200-301 course?
No. It focuses on network fundamentals and final-topic concepts, not the full exam syllabus.
Do I need prior networking knowledge?
Basic familiarity with networking concepts is helpful, but explanations are beginner-friendly.
Does this course include labs or configurations?
No. It focuses on theory and conceptual understanding.
Is there a certificate of completion?
No. This is a free tutorial and does not provide certification.
Can this help with CCNA preparation?
Yes. It supports CCNA learning by reinforcing key networking concepts.
Practical Value
This course is especially useful for learners who struggle with how networking really works beyond memorization. By explaining TCP/IP behavior, Ethernet communication, and LAN concepts in detail, it helps build a strong conceptual foundation that makes advanced networking topics easier to understand later.
Final Thoughts
If you want a free, detailed explanation of network fundamentals, especially TCP/IP, Ethernet, and LAN behavior, this course is a strong choice. While it doesn’t replace a full CCNA certification program, it provides valuable insight into the concepts that every network professional must understand.
