CF

Cisco CCNA 200-125 – The Complete Guide to Getting Certified

38h 48m 8s
English
Paid
Updated September 2026

Cisco CCNA 200-125 – The Complete Guide to Getting Certified is a 291-lesson 38 hours 48 minutes self-paced course by Udemy. This is a full run at the current Cisco CCNA 200-301 exam (successor to the retired 200-125), built around hands-on labs rather than just slides describing protocols.

Course facts

Lessons
291
Duration
38 hours 48 minutes
Level
All levels
Language
English
Updated
2026-09-11
Instructor
Udemy
Price
Premium

This is a full run at the current Cisco CCNA 200-301 exam (successor to the retired 200-125), built around hands-on labs rather than just slides describing protocols.

How it's structured

Every technology area on the exam gets a complete, plain-language explanation, followed by lab exercises so you actually configure and troubleshoot the concepts instead of just reading about them. You'll build your own fully-featured practice lab, with every question posted in the course Q&A getting an answer.

What you'll walk away with

  • A working understanding of Cisco's core features and functions
  • Hands-on configuration and troubleshooting experience across 291 lessons
  • Real-world examples of how networks actually behave, not just textbook theory

It's built as a single, structured path to the CCNA rather than a loose collection of topic videos.

(The CCNA 200-301 is the current CCNA exam and replacement for the CCNA 200-125 which was retired in February 2020.)

This is the one course you need to get your CCNA.

Full lab exercises are included so you'll get the hands-on practical skills you need to work on real world networks, and it's the only CCNA course online where all questions posted in the Q&A section are answered.

It offers an easy to understand, structured approach to shortcut your path to mastering Cisco networking to the CCNA level and beyond.

In this course, you will:

  • Develop a deep understanding of Cisco’s features and functions

  • Walk through complete and easy to understand explanations of each technology area covered in the exam

  • Follow simple step by step instructions to build your own fully featured lab on your laptop for free

  • Gain hands on configuration and troubleshooting experience through comprehensive lab exercises

  • Learn how networking really works through real world examples throughout the course

  • Build the skills and confidence to crush the CCNA 200-301 exam

  • Gain demonstrable knowledge and practical experience to supercharge your networking career

Supercharge Your Learning with Hands-on Practice

This course is chock full of activities. You’ll get over 300 pages of hands-on lab exercises with detailed answers to check your understanding every step of the way and build your configuration and troubleshooting skills.  Full diagrams and lab setup files are included so you can get started immediately with just your laptop. No equipment or previous experience is required.

All slides in the course are also included in supplemental study notes format with expanded bullet points clearly explaining the technologies. Easily review exam topics to solidify your understanding and get a final refresher when test day is approaching.  

Why Learn from Me

In this course, you won’t just gain the book smarts to pass the exam. You’ll also hone your hands-on skills to succeed as a network engineer in the real world. I’m a professional instructor who has been entrusted by Cisco since 2007 to develop and deliver training courses for their own engineers and partners. I’ve also designed multiple training courses for the largest service providers in the Asia Pacific region such as IBM, Verizon, and the Australian National Broadband Network. I’ve spent years distilling my decade’s worth of networking experience from the field into mentoring and supporting other systems engineers, and I’m passionate about passing my knowledge of Cisco networks onto others.

As a student in this course, you’ll get lifetime access to the course materials and answers to every question you ask in the Q&A board. I love interacting with my students: anything you want to know, please ask. The course also comes with an unconditional risk-free 30 day money-back guarantee–that's my personal promise of your success.

Value

If you take a comparable course at a training centre it will cost you thousands of dollars, and when it’s over you can’t experience the tutorials again or ask the instructor any more questions. When you take my course you can learn anytime you want in the comfort of your own home, and I’m always here for you whenever you need any help.

Not sure about the best way to pay for this course? Ask your manager at work if they’ll expense it. They won’t have to pay the large fees of traditional classroom learning or have to cover your absence for a week. They get huge value from this investment in your future.

When you’re done with the course, you’ll have everything you need to crush the Cisco CCNA exam. I’m excited to share all of my knowledge with you.

Join me on this journey to turbocharging your career!

Requirements:
  • You’ll need basic knowledge of how to operate a computer and browse the Internet; that’s it!
  • Absolute beginners to networking are welcome. I start with beginner level networking and explain every single acronym and concept you need to pass the exam.
Who this course is for:
  • Anyone who wants to pass the Cisco CCNA 200-301 exam and start or improve a career in networking.
  • IT helpdesk engineers who are interested in careers such as network engineers, network administrators, systems administrators, or solution architects. This course can help start your career journey into these fields.
  • Network engineers who are not Cisco CCNA certified or who have an expired certification. Even if you’re an experienced professional, you’ll fill gaps in your knowledge and master concepts like IPv6, EIGRP, OSPF, and BGP in this course.
  • IT professionals who want a comprehensive resource on Cisco networking theory, configuration and troubleshooting.

What you'll learn:

  • Get what you need to pass the up-to-date Cisco CCNA 200-301 exam
  • Gain hands-on Cisco CCNA configuration and troubleshooting experience through practice labs
  • Explore how routing and switching technologies work in real world environments
  • Develop skills to work on enterprise production networks

Who teaches Cisco CCNA 200-125 – The Complete Guide to Getting Certified? Udemy

Udemy thumbnail

Udemy is the largest open marketplace for online courses on the internet. Founded in 2010 by Eren Bali, Oktay Caglar, and Gagan Biyani and headquartered in San Francisco, the company went public on the Nasdaq in 2021 under the ticker UDMY. The platform hosts well over two hundred thousand courses across software development, IT and cloud, data science, design, business, marketing, and creative skills, taught by tens of thousands of independent instructors. Roughly seventy million learners use it worldwide, and the corporate arm — Udemy Business — supplies a curated subset of that catalog to enterprise customers.

Because Udemy is a marketplace rather than a single editorial publisher, the catalog is uneven by design. The strongest material lives in the long-form, project-based courses authored by working engineers — full-stack JavaScript, React, Node.js, Python data science, AWS, Docker and Kubernetes, mobile development with Flutter and React Native, and cloud certification preparation. The CourseFlix listing under this source is the slice of that catalog that has been mirrored here for offline-friendly viewing, organized by topic and updated as new releases land. Pricing on Udemy itself swings dramatically with the site's near-permanent sales, which is why the platform is best treated as a deep reference catalog: pick instructors with strong reviews and a track record of updating their material rather than buying on the headline price alone.

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#1: Introduction
All Course Lessons (291)
#Lesson TitleDurationAccess
1
Introduction Demo
01:08
2
How to Make the Most of This Course
09:00
3
The Study Plan
04:33
4
The Udemy Interface
03:28
5
Why Passing the CCNA is Going to Turbo Charge Your Career
03:47
6
How to Set Up the Lab Introduction
00:42
7
Cisco Packet Tracer Installation
06:40
8
How to Use the Course Lab Exercises
09:00
9
Introduction
00:58
10
A (Very) Basic Introduction to Networking
05:45
11
The OSI Reference Model Overview
09:26
12
The TCP/IP Stack
05:12
13
The Upper OSI Layers
03:24
14
The Lower OSI Layers
05:07
15
Introduction
01:18
16
Cisco Operating Systems
05:09
17
Making the Initial Connection to a Cisco Device
10:36
18
Navigating the Cisco IOS Operating System Part 1
10:18
19
Navigating the Cisco IOS Operating System Part 2
10:32
20
Cisco IOS Configuration Management
09:06
21
Introduction
00:42
22
The Transport Layer Header, TCP and UDP
12:31
23
Introduction
00:49
24
The IP Header
08:49
25
Unicast, Broadcast and Multicast Traffic
04:18
26
How to Count in Binary
09:05
27
IPv4 Addresses
08:04
28
Calculating an IPv4 Address in Binary
08:23
29
The Subnet Mask
10:39
30
Slash Notation
04:02
31
Introduction
00:34
32
Class A IP Addresses
11:32
33
IP Address Classes B and C
04:30
34
IP Address Classes D and E
08:26
35
Introduction
00:54
36
CIDR Classless Inter-Domain Routing
05:47
37
Subnetting Overview
09:53
38
Subnetting Class C Networks and VLSM
11:26
39
Subnetting Practice Questions
07:57
40
Variable Length Subnet Masking Example Part 1
10:02
41
Variable Length Subnet Masking Example Part 2
07:49
42
Subnetting Large Networks Part 1
11:31
43
Subnetting Large Networks Part 2
07:59
44
Private IP Addresses Part 1
10:48
45
Private IP Addresses Part 2
09:08
46
Where to Get More Subnetting Practice
03:06
47
Introduction
00:48
48
Local Area Network Layer 2 - Ethernet
10:20
49
Introduction
00:37
50
Ethernet Connection Media
12:57
51
Introduction
01:02
52
Switches vs Hubs
04:58
53
Switch Operation
07:53
54
Routers
05:59
55
Other Cisco Devices
03:49
56
Introduction
01:23
57
DNS The Domain Name System
05:48
58
DNS on Cisco Routers
07:02
59
ARP Address Resolution Protocol
07:43
60
ARP for Routed Traffic
08:58
61
Life of a Packet Example Part 1 - DNS
16:30
62
Life of a Packet Example Part 2 - HTTP
09:45
63
Introduction
00:45
64
The Cisco Troubleshooting Methodology
10:18
65
Cisco Troubleshooting Methodology - Lab Example
07:22
66
Introduction
00:47
67
Basic Router and Switch Configuration
12:42
68
The Setup Wizard
08:01
69
Speed and Duplex Settings
07:49
70
CDP and LLDP
09:12
71
Basic Layer 1 and 2 Troubleshooting
07:53
72
Basic Layer 1 and 2 Troubleshooting - Lab Demo
09:03
73
Introduction
01:12
74
The Boot Up Process
06:58
75
The Boot Up Process Lab Demo
07:58
76
Factory Reset and Password Recovery
09:18
77
Password Recovery Lab Demo
08:33
78
Backing up the System Image and Configuration
08:24
79
Upgrading IOS
05:07
80
Licensing
03:22
81
Introduction
00:59
82
Connected and Local Routes
06:30
83
Connected and Local Routes Lab Demo
06:25
84
Static Routes
06:13
85
Static Routes Lab Demo
10:05
86
Summarisation and Default Routes
09:51
87
Summary Routes and Longest Prefix Match Lab Demo
12:20
88
Default Routes and Load Balancing Lab Demo
11:40
89
Introduction
01:39
90
Dynamic Routing Protocols vs Static Routes
10:07
91
Dynamic Routing Protocols Lab Demo
07:19
92
Routing Protocol Types
07:05
93
Routing Protocol Types Lab Demo
06:53
94
Routing Protocol Metrics
14:59
95
Routing Protocol Metrics Lab Demo
15:02
96
Equal Cost Multi Path
04:24
97
Equal Cost Multi Path Lab Demo
10:59
98
Administrative Distance
10:08
99
Administrative Distance Lab Demo
08:26
100
Loopback Interfaces
08:54
101
Adjacencies and Passive Interfaces
07:13
102
Adjacencies and Passive Interfaces Lab Demo
06:38
103
Introduction
01:00
104
Basic Connectivity Troubleshooting
13:18
105
IP SLA
11:41
106
Introduction
00:58
107
RIP the Routing Information Protocol
11:22
108
RIP Advanced Topics
10:32
109
RIP Lab Demo
14:05
110
Introduction
01:22
111
EIGRP Characteristics and Configuration
11:27
112
EIGRP Verification and Lab Demo
06:25
113
EIGRP Advanced Topics
09:40
114
EIGRP Advanced Topics Lab Demo
11:19
115
EIGRP Successors and Feasible Successors
11:43
116
EIGRP Metric
08:11
117
EIGRP Metric and Successors Lab Demo
08:32
118
Introduction
01:10
119
OSPF Characteristics
06:10
120
OSPF Basic Configuration
11:11
121
OSPF Basic Configuration Lab Demo
04:40
122
OSPF Advanced Topics
07:16
123
OSPF Advanced Topics Lab Demo
07:20
124
Bandwidth vs Clock Rate and Speed
05:12
125
OSPF Cost Metric
09:36
126
OSPF Cost Metric Lab Demo
08:00
127
OSPF Areas
14:19
128
OSPF Areas Lab Demo
11:11
129
Introduction
01:02
130
Campus LAN Design - Core, Distribution and Access Layers
08:09
131
Why we have VLANs
09:53
132
VLAN Access Ports
06:57
133
VLAN Access Ports Lab Demo
08:22
134
VLAN Trunk Ports
12:55
135
VLAN Trunk Ports Lab Demo
13:29
136
DTP Dynamic Trunking Protocol
05:37
137
VTP VLAN Trunking Protocol
07:47
138
VTP Lab Demo
10:22
139
Introduction
01:12
140
Router with Separate Interfaces
11:41
141
Router on a Stick
11:34
142
Layer 3 Switch
08:11
143
Layer 3 Switch Lab Demo
09:24
144
Introduction
01:00
145
DHCP Dynamic Host Configuration Protocol
06:32
146
Cisco DHCP Server
06:50
147
External DHCP Server
05:17
148
Cisco DHCP Client
05:03
149
Introduction
02:01
150
Network Redundancy
08:51
151
FHRP First Hop Redundancy Protocols
07:10
152
HSRP Hot Standby Router Protocol
09:13
153
HSRP Advanced Topics
07:38
154
Introduction
01:39
155
Layer 3 Path Selection and Loop Prevention Review
11:31
156
Why we have the Spanning Tree Protocol
12:43
157
Spanning Tree Terminology - The Bridge
03:21
158
How Spanning Tree Works
20:25
159
Spanning Tree Versions
07:54
160
Verification - show spanning-tree
11:12
161
Verification - show mac address-table
05:24
162
Manipulating the Root Bridge Election
07:03
163
Spanning Tree and HSRP Alignment
06:57
164
Portfast, BPDU Guard and Root Guard
06:48
165
Introduction
01:22
166
Why we have EtherChannel
08:39
167
EtherChannel Load Balancing
04:40
168
EtherChannel Protocols and Configuration
10:22
169
EtherChannel Lab Demo
13:00
170
StackWise, VSS and vPC
08:24
171
Introduction
01:08
172
DHCP Snooping
05:37
173
DAI Dynamic ARP Inspection
08:02
174
802.1X Identity Based Networking
03:14
175
Preventing Unauthorised Devices with Port Security
11:01
176
Preventing Unauthorised Devices with Port Security Lab Demo
08:10
177
Locking Ports to Hosts with Port Security
06:09
178
Locking Ports to Hosts with Port Security Lab Demo
10:41
179
Introduction
04:36
180
Access Control Lists Overview
04:30
181
Standard, Extended and Named ACLs
10:43
182
ACL Syntax
10:12
183
ACL Operations
15:21
184
Numbered ACLs Lab Demo
14:04
185
Named ACLs Lab Demo
10:30
186
Packet Filters vs Stateful Firewalls
10:13
187
Introduction
02:15
188
IPv4 Address Exhaustion and NAT
08:05
189
Static NAT
06:49
190
NAT Translations - Inside Local, Inside Global, Outside Local, Outside Global
09:39
191
Static NAT Lab Demo
08:22
192
Dynamic NAT
09:19
193
Dynamic NAT Lab Demo
07:50
194
PAT Port Address Translation
14:22
195
PAT Port Address Translation Lab Demo
06:58
196
Introduction
01:30
197
Why We Need IPv6
10:29
198
The IPv6 Address Format
07:57
199
IPv6 Global Unicast Addresses
09:50
200
IPv6 Global Unicast Addresses Lab Demo
07:36
201
EUI-64 Addresses
08:50
202
Unique Local and Link Local Addresses
10:58
203
Link Local Addresses Lab Demo
06:47
204
SLAAC Stateless Address AutoConfiguration
10:03
205
IPv6 Access Control Lists
07:11
206
Introduction
02:03
207
IPv6 Static Routes
13:37
208
IPv6 Static Routes Lab Demo
17:45
209
OSPFv3
08:51
210
OSPFv3 Verification
08:24
211
OSPFv3 Lab Demo
11:33
212
EIGRP for IPv6
05:09
213
EIGRP for IPv6 Verification
06:18
214
EIGRP for IPv6 Lab Demo
07:04
215
Introduction
01:38
216
WAN Overview
04:52
217
VPN - Virtual Private Networks
09:53
218
WAN Connectivity Options
08:46
219
Leased Lines
10:20
220
HDLC and PPP
08:22
221
HDLC and PPP Lab Demo
08:43
222
PAP Authentication
10:29
223
CHAP Authentication
12:25
224
MLP MultiLink PPP
05:42
225
MLP Lab Demo
08:12
226
MPLS Multi Protocol Label Switching
12:20
227
PPPoE Point to Point Protocol over Ethernet
07:39
228
PPPoE Lab Demo
04:07
229
GRE Generic Routing Encapsulation
08:02
230
GRE Lab Demo
10:03
231
WAN Topology Options
04:41
232
Introduction
01:53
233
Why We Need BGP
12:49
234
BGP for Service Providers
13:18
235
Configuring BGP Neighbors
14:19
236
Advertising Routes in BGP
10:35
237
BGP for Service Providers Lab Demo
16:18
238
BGP for Enterprises
16:13
239
BGP in MPLS Networks
09:07
240
BGP for Enterprises Lab Demo
07:41
241
Introduction
01:26
242
Line Level Security
13:54
243
Privileged Exec and Password Encryption
04:34
244
Line Level Security Lab Demo
09:35
245
Usernames and Privilege Levels
11:22
246
SSH Secure Shell
04:48
247
SSH Secure Shell Lab Demo
05:33
248
AAA Authentication, Authorization and Accounting
12:11
249
AAA Configuration
08:39
250
Global Security Best Practices
09:50
251
Global Security Best Practices Lab Demo
05:02
252
Introduction
01:31
253
Syslog
15:06
254
Terminal Monitor and Logging Synchronous
06:11
255
Syslog Lab Demo
06:11
256
SNMP Simple Network Management Protocol
09:20
257
SNMP Lab Demo
03:58
258
SNMPv3 Configuration
10:07
259
SNMPv3 Lab Demo
07:06
260
Syslog vs SNMP
05:55
261
SPAN Switched Port Analyser
11:03
262
Introduction
01:25
263
QoS Overview
19:09
264
Classification and Marking
14:23
265
Congestion Management
10:52
266
Policing and Shaping
12:46
267
Introduction
01:29
268
Traditional IT Deployment Models
06:11
269
Defining Cloud Computing
06:56
270
Cloud Computing Case Study
13:39
271
Server Virtualization
13:09
272
Virtualizing Network Devices
14:10
273
Cloud Service Models
10:33
274
Cloud Deployment Models
11:06
275
Cloud Computing Advantages
08:32
276
Introduction
01:31
277
SDN Software Defined Networking
08:12
278
The Cisco APIC-EM
13:09
279
Thank You!
01:01
280
Introduction
00:53
281
The Security Threat Landscape
13:43
282
Common Attacks
18:17
283
Firewalls and IDS/IPS
09:54
284
Firewalls vs Packet Filters
13:54
285
Cryptography
12:40
286
TLS Transport Layer Security
13:36
287
Site-to-Site VPN Virtual Private Networks
15:32
288
Remote Access VPN Virtual Private Networks
05:17
289
Threat Defense Solutions
17:11
290
Introduction
02:06
291
Introduction
02:06
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Frequently asked questions

What prerequisites should I have before starting this course?
Before starting the course, it is beneficial to have a basic understanding of networking concepts. The course includes a very basic introduction to networking, which can help you get started, but familiarity with fundamental IT concepts will be advantageous. No prior experience with Cisco equipment is required as the course covers everything from making the initial connection to a Cisco device to navigating the Cisco IOS operating system.
What projects or exercises will I work on during the course?
The course includes lab exercises that focus on practical networking tasks. You will use Cisco Packet Tracer to simulate network configurations and operations. Topics covered include subnetting practice, configuring Cisco devices, and working with network protocols such as TCP/IP. These hands-on exercises are designed to prepare you for real-world networking scenarios and the CCNA exam.
Who is the target audience for this course?
The course is ideal for individuals who are seeking to earn the Cisco Certified Network Associate (CCNA) certification. It is particularly suited for those looking to start or advance their careers in IT and networking. Whether you are an aspiring network engineer, IT professional, or a student interested in networking, this course provides the knowledge required to pass the CCNA exam.
How does this course compare in depth and scope to other networking courses?
This course provides comprehensive coverage of the topics required for the Cisco CCNA 200-301 exam. It includes detailed lessons on networking fundamentals, Cisco operating systems, IP addressing, subnetting, and more. With 291 lessons, it offers in-depth exploration of concepts compared to shorter courses, making it a thorough preparation tool for the certification exam.
What is not covered in this course that I might need to know?
The course does not cover topics outside the scope of the CCNA 200-301 exam. Advanced networking topics, such as those covered in CCNP or CCIE certifications, are not included. Additionally, while comprehensive in Cisco-related networking, the course does not delve into non-Cisco specific technologies or vendor-specific networking solutions.
How much time should I expect to commit to this course?
The course consists of 291 lessons, and while the total runtime is not specified, you should anticipate dedicating a significant amount of time to thoroughly understand the material and complete lab exercises. The course's extensive content suggests a commitment similar to that of a full-length college course, which could range from several weeks to a few months, depending on your pace.
How will the skills learned in this course be applicable to other IT roles or certifications?
Skills acquired in this course, such as configuring Cisco devices, understanding networking protocols, and subnetting, are foundational for many IT roles, including network administration and support. These skills also serve as a stepping stone for advanced Cisco certifications like CCNP and CCIE, as well as other IT certifications that require a solid networking foundation.