Duration of the online course: 11 hours and 16 minutes
New
Build job-ready networking skills in this free online course: subnetting, switching, routing, IPv6, security basics, plus hands-on labs for the CCNA exam.
In this free course, learn about
Network fundamentals: purpose, basic components, and communication modes (unicast/multicast/broadcast)
OSI model: why it exists and the role of each layer (L1–L7) in data communication
Transport concepts: TCP vs UDP, 3-way handshake, ports and common use cases
Wireless basics: AP/WLC roles, BSS/ESS, roaming, and enterprise wireless control
Security essentials: firewalls/IPS, VPN basics, port security, DHCP snooping, ACLs
Modern networking: controller-based networks, SDN, REST APIs, and JSON/XML/YAML data formats
About the free online course
Strong networking skills open doors in IT support, systems administration, cloud operations, cybersecurity, and network engineering. This free online course is designed to help you build that foundation with a clear, step-by-step path from core concepts to real configuration workflows aligned with the CCNA 200-301 exam objectives. If you have ever felt lost between IP addressing, VLANs, routing tables, and security features, you will learn how the pieces fit together and, more importantly, how to think like a network professional when troubleshooting.
You will start by understanding how networks move data and why models like OSI still matter when diagnosing problems. From there, you will connect theory to practice by working through TCP and UDP behavior, ports, addressing, and the logic behind packet forwarding. Subnetting and VLSM are explained in a way that helps you calculate networks confidently and recognize patterns quickly, so you can design efficient address plans instead of guessing.
As you progress, you will develop practical switching skills such as MAC learning, VLAN segmentation, trunking with 802.1Q, neighbor discovery, EtherChannel, and loop prevention concepts that keep real networks stable. On the routing side, you will understand static routes, default routes, and dynamic routing with OSPF, including how neighbors form and how best paths are selected. Modern enterprise topics like FHRP, NAT, DHCP, DNS, SNMP, syslog, and NTP are covered as essential operational building blocks you will meet in production environments.
The course also introduces wireless components and architectures, along with hands-on practice using Cisco Packet Tracer to reinforce configuration habits and verification techniques. You will round out your learning with security fundamentals such as secure remote access, device hardening, port security, DHCP snooping concepts, ACLs, and VPN basics, plus an introduction to controller-based networking, SDN, and API/data formats used in automation. By the end, you will be prepared to discuss networking with confidence, perform common tasks on Cisco-like devices, and move closer to passing the CCNA while gaining skills that translate directly to cloud and enterprise networks.
Course content
Video class: CCNA 200-301 Lesson-1- What is Computer Network?02m
Exercise: What is the primary purpose of a computer network?
Video class: CCNA 200 - 301 Lesson - 2: What are Different Modes of Communication?02m
Video class: CCNA 200 - 301 Lesson - 3: Know Different types of Communication in a Computer Network01m
Exercise: Which type of communication is defined as one sender sending traffic to all devices on the network?
Video class: CCNA 200 - 301 Lesson - 4: What are Basic Components of a Network?04m
Video class: CCNA 200 - 301 Lesson - 5: What is OSI Model and why do we need it?03m
Exercise: What problem did the OSI model help solve in early networking between different vendors?
Video class: CCNA 200 - 301 Lesson - 6: Understanding Layer 7: Application Layer of OSI Model02m
Video class: CCNA 200 - 301 - Lesson 95: Remote Access Methods: Telnet vs SSH01m
Exercise: Which remote access protocol is preferred on Cisco IOS because it encrypts communication?
Video class: CCNA 200 - 301 - Lesson 96: How to Enable Telnet and SSH on Cisco Devices04m
Video class: CCNA 200 - 301 - Lesson 97: How to use TFTP Server in Real Time Networks08m
Exercise: If a router’s operating system image is missing/deleted and the router cannot boot normally, what is the most common recovery method to restore the IOS image?
What CCNA 200-301 networking topics does this free course cover?
It covers networking fundamentals, the OSI model, IPv4/IPv6 addressing, subnetting, VLANs, switching, routing, OSPF, wireless, NAT, security, and network automation.
Does the CCNA 200-301 course include subnetting and Cisco Packet Tracer practice?
Yes. It explains subnet masks, VLSM, network and broadcast IDs, and includes Cisco Packet Tracer installation, usage, and basic device configuration lessons.
Which Cisco routing and switching technologies are taught in this course?
Topics include VLANs, 802.1Q trunks, EtherChannel, STP, static and default routes, OSPF, FHRP, DHCP, NAT/PAT, ACLs, and port security.
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