Uploaded January 2026 | Updated September 2026, 16 hours ago
Subnetting in exams isn’t about theory.
It’s about staying calm under time pressure.
This is the exact visual method I rely on when the clock is running.
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No memorising.
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Just a repeatable method.
I teach IP Subnetting at - howtonetwork.com
Subnetting in exams isn’t about theory.
It’s about staying calm under time pressure.
This is the exact visual method I rely on when the clock is running.
If you want the full cheat system explained slowly and clearly, it’s in my subnetting book:
👉 amzn.to/4pYn7e9
If you want to drill Class A, B, and C subnetting, VLSM, CIDR, route summarization, and IPv6, then it's in my 101 Labs - IP Subnetting book:
👉 amzn.to/4pYn7e9
No memorising.
No panic.
Just a repeatable method.
I teach IP Subnetting at - howtonetwork.com
![Configure IoT Devices - Motion Detection [Network+, A+]](https://i.ytimg.com/vi/XqCC_7Ke9w8/mqdefault.jpg "Configure IoT Devices - Motion Detection [Network+, A+]
Please also read the blog post, which features all the lab steps.
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![Red Hat RHCSA Certification Training [2022] - Videos, Labs and Practice Exams](https://i.ytimg.com/vi/XyQ8yk2eJm0/mqdefault.jpg "Red Hat RHCSA Certification Training [2022] - Videos, Labs and Practice Exams
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![Transmission Media and Transceivers M1L5 - Network+ [N10-009]](https://i.ytimg.com/vi/ZIbNLKrD0ek/mqdefault.jpg "Transmission Media and Transceivers M1L5 - Network+ [N10-009]
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![Networking Appliances, Applications and Functions M1L2 - Network+ [N10-009]](https://i.ytimg.com/vi/ZyyenkvnGF0/mqdefault.jpg "Networking Appliances, Applications and Functions M1L2 - Network+ [N10-009]
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![CompTIA Cloud+ [CV0-004] Cloud Virtualization](https://i.ytimg.com/vi/_n6HUwPCmS4/mqdefault.jpg "CompTIA Cloud+ [CV0-004] Cloud Virtualization
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✅CompTIA CASP+ - M4L4 - Disaster Recovery Concepts.
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✅CompTIA CASP+ - M4L3 - Compliance Frameworks and Legal Considerations
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✅CompTIA CASP+ - M4L2 - Managing and Mitigating Vendor Risk.
👉https://www.youtube.com/watch?v=H2cE8o98-bA
✅Common Networking Ports & Services - CompTIA Network+ N10-009
👉https://www.youtube.com/watch?v=nbnSNwYfRM8
✅CompTIA A+ 220-1101 Free Lesson - 2.7 Network Types
👉https://www.youtube.com/watch?v=wNqdTMR6msc
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![Learn TCP/IP in a Weekend [5-Hour Course]](https://i.ytimg.com/vi/_tX-0Xn5SGU/mqdefault.jpg "Learn TCP/IP in a Weekend [5-Hour Course]
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MODULE 1 - TCP/IP Operations and Protocols
00:00 - The TCP Model
036:25 - TCP and IP, UDP, ARP, RARP, ICMP, IGMP, Packet Delivery Process, Binary Math
1:30:45 - NFS, SSH, SCP, Telnet, SMB, LDAP
MODULE 2 - IP Addressing and Data Delivery
1:47:12 - IP Addressing and Subnetting
2:17:39 - IPv4 Addressing Scheme, Private IP Addressing, Default Gateways, VLSM, CIDR
2:48:10 - IPv6 Addressing, Data Delivery, Flow Control, Error Detection
3:26:53 - IPv6 Address Types, NDP, EUI-64
3:54:30 - Assigning IP Addresses, DHCP
MODULE 3 - TCP Tools and Commands
4:11:12 - Ping, Tracert, Protocol Analyzer, Port Scanner, NS Lookup, ARP, Route
MODULE 4 - TCP Security Protocols
4:29:14 - VPN, RADIUS, TACACS+
4:38:35 - AAA
4:47:41 - IPSec")
