Computer Networking Made Clear is a friendly, hands-on guide that explains how networks really work, from the cable in the wall to the web page on your screen.
If you have ever wondered why the internet is slow, what an IP address actually is, or why a device says it is connected but nothing loads, this book gives you clear answers and a repeatable way to find the cause.
Inside, you will learn how to:
Understand the OSI and TCP/IP models without memorizing jargonRead IP addresses, subnet masks, and CIDR prefixes, and split a network into subnetsUse IPv6, DHCP, ARP, and DNS with confidenceUnderstand TCP, UDP, ports, and the protocols behind web, email, and remote accessChoose, place, and secure Wi-Fi, including WPA3 and Wi-Fi 7 basicsSet up firewalls, VLANs, guest networks, and VPNs the safe wayTroubleshoot with ping, traceroute, dig, and a seven-step methodRead real packets in Wireshark on your own lab networkBuild a home lab, document your network, and plan your next certificationEvery chapter includes a safe, hands-on exercise, a worked case study, common mistakes to avoid, and a recap with check questions. The appendices provide a plain-English glossary, a ports cheat sheet, a subnet cheat sheet, and a command reference.
Written for beginners, help-desk staff, career changers, home lab hobbyists, and anyone preparing for an entry-level networking certification such as CompTIA Network+. No prior networking experience is required.
All security material is defensive and lab-based, so you practice only on equipment you own or are authorized to use.