NETWORK FUNDAMENTALS For Beginners

Heard “OSI model,” “subnetting,” and “BGP” thrown around in interviews or certification exams and felt like everyone else spoke a language you never learned?

Most networking resources either drown you in acronyms with no mental model to hang them on, or reduce everything to memorized layer numbers you can recite but not apply. The result: you can’t actually trace what happens to a packet, configure a subnet with confidence, or troubleshoot a real network when something breaks. This book builds networking from the ground up, from a packet’s journey across the OSI and TCP/IP models to designing a complete small business network yourself.

Inside, you’ll learn:

• The OSI and TCP/IP models as one coherent mental map, not seven layers to memorize separately
• IP addressing and subnetting explained in depth — including CIDR, VLSM, and a quick, practical method for solving subnetting problems
• How switching and routing actually work: MAC tables, VLANs, spanning tree, routing tables, and dynamic routing protocols like OSPF and BGP
• Core network services (DHCP, DNS) and the real difference between TCP and UDP, including how to read a live packet capture in Wireshark
• Network security fundamentals — firewalls, ACLs, VPNs, and common attacks — plus a systematic method for troubleshooting real problems

By the end, you’ll understand wireless networking, WANs, and cloud networking well enough to design infrastructure with confidence, then apply everything in your capstone project: designing a complete small business network from scratch.

Stop memorizing acronyms you can’t apply. Get your copy today and start understanding networks like the professionals who run them.