Cybersecurity
Networking
Prepares you for CompTIA Network+ (N10-009)
How networks are designed, built, run, secured and fixed, from the OSI model and subnetting to routing, wireless and the cloud.
By the end you’ll have made: A simulated office network with VLANs, routing, DHCP and DNS that you designed and troubleshot

Time to learn
≈ 35 h 3 min
That’s about 20 football matches.
12 h 58 min watching · 17 h 11 min practising · 4 h 54 min on quizzes and games
6 modules · 114 lessons
Start lesson oneModules
Week 1Networking concepts, protocols and cabling
≈ 7 h 17 min · 55 long showers- How to Pass Your CompTIA N10-009 Network+ Exam7:40
- Understanding the OSI Model (part 1 of 2)6:56
- Understanding the OSI Model (part 2 of 2)7:05
- Networking Devices (part 1 of 2)7:16
- Networking Devices (part 2 of 2)7:25
- Networking Functions (part 1 of 2)6:43
- Networking Functions (part 2 of 2)6:52
- Designing the Cloud9:49
- Cloud Models5:23
- Introduction to IP (part 1 of 2)7:05
- Introduction to IP (part 2 of 2)7:15
- Common Ports (part 1 of 3)6:47
- Common Ports (part 2 of 3)6:58
- Common Ports (part 3 of 3)6:57
- Networking concepts checkpointTimed · 15 min
- Other Useful Protocols8:26
- Network Communication3:55
- Wireless Networking6:37
- Ethernet Standards4:04
- Optical Fiber3:55
- Copper Cabling7:21
- Network Transceivers4:52
- Fiber Connectors3:56
- Copper Connectors3:31
- Network Topologies4:42
- Network Architectures4:53
- Networking concepts, protocols and cabling gamesTower · Speed round · Match-up
Week 2IP addressing, subnetting and modern networks
≈ 5 h 37 min · 42 long showers- Binary Math9:15
- IPv4 Addressing (part 1 of 2)5:33
- IPv4 Addressing (part 2 of 2)5:43
- Classful Subnetting (part 1 of 2)5:29
- Classful Subnetting (part 2 of 2)5:39
- IPv4 Subnet Masks9:00
- Calculating IPv4 Subnets and Hosts9:46
- Magic Number Subnetting (part 1 of 3)7:03
- Magic Number Subnetting (part 2 of 3)7:13
- Magic Number Subnetting (part 3 of 3)7:13
- Addressing checkpointTimed · 15 min
- Seven Second Subnetting (part 1 of 2)8:32
- Seven Second Subnetting (part 2 of 2)8:41
- Software Defined Networking6:56
- Virtual Extensible LAN5:17
- Zero Trust6:41
- Infrastructure as Code8:20
- IPv6 Addressing (part 1 of 2)6:55
- IPv6 Addressing (part 2 of 2)7:05
- IP addressing, subnetting and modern networks gamesTower · Speed round · Match-up
Week 3Routing, switching and wireless
≈ 5 h 42 min · 43 long showers- Static Routing7:21
- Dynamic Routing9:12
- Routing Technologies (part 1 of 2)8:05
- Routing Technologies (part 2 of 2)8:15
- Network Address Translation7:02
- VLANs and Trunking (part 1 of 2)6:15
- VLANs and Trunking (part 2 of 2)6:24
- Interface Configurations6:40
- Spanning Tree Protocol6:06
- Implementation checkpointTimed · 15 min
- Wireless Technologies8:34
- Wireless Networking (part 1 of 2)5:57
- Wireless Networking (part 2 of 2)6:07
- Network Types4:41
- Wireless Encryption3:23
- Installing Networks (part 1 of 2)5:50
- Installing Networks (part 2 of 2)6:00
- Power7:19
- Environmental Factors3:29
- Routing, switching and wireless gamesTower · Speed round · Match-up
Week 4Network operations and services
≈ 6 h 27 min · 48 long showers- Network Documentation (part 1 of 2)5:21
- Network Documentation (part 2 of 2)5:31
- Life Cycle Management8:17
- Configuration Management5:19
- SNMP8:58
- Logs and Monitoring (part 1 of 2)6:33
- Logs and Monitoring (part 2 of 2)6:43
- Network Solutions6:57
- Disaster Recovery (part 1 of 2)6:05
- Disaster Recovery (part 2 of 2)6:14
- Network Redundancy4:06
- Operations checkpointTimed · 15 min
- DHCP8:51
- Configuring DHCP (part 1 of 2)5:09
- Configuring DHCP (part 2 of 2)5:19
- IPv6 and SLAAC4:53
- An Overview of DNS (part 1 of 2)8:27
- An Overview of DNS (part 2 of 2)8:37
- DNS Records9:04
- Time Protocols5:02
- VPNs6:54
- Remote Access7:52
- Network operations and services gamesTower · Speed round · Match-up
Week 5Network security
≈ 4 h 56 min · 37 long showers- Security Concepts (part 1 of 2)6:33
- Security Concepts (part 2 of 2)6:43
- Authentication (part 1 of 2)6:23
- Authentication (part 2 of 2)6:33
- Security Technologies7:15
- Regulatory Compliance4:01
- Segmentation Enforcement6:10
- Denial of Service6:58
- VLAN Hopping6:35
- Network security checkpointTimed · 15 min
- MAC Flooding8:10
- ARP and DNS Poisoning7:28
- Rogue Services6:08
- Social Engineering (part 1 of 2)5:28
- Social Engineering (part 2 of 2)5:38
- Malware6:41
- Device Security9:03
- Security Rules (part 1 of 2)5:12
- Security Rules (part 2 of 2)5:21
- Network security gamesTower · Speed round · Match-up
Week 6Network troubleshooting
≈ 5 h 4 min · 38 long showers- Network Troubleshooting Methodology8:04
- Cable Issues (part 1 of 2)7:20
- Cable Issues (part 2 of 2)7:30
- Interface Issues9:29
- Hardware Issues7:34
- Switching Issues9:58
- Routing and IP Issues9:37
- Troubleshooting checkpointTimed · 15 min
- Performance Issues7:18
- Wireless Issues9:21
- Software Tools7:29
- Command Line Tools (part 1 of 2)9:00
- Command Line Tools (part 2 of 2)9:09
- Hardware Tools8:40
- Basic Network Device Commands8:56
- Network troubleshooting gamesTower · Speed round · Match-up