Computer Networking Fundamentals for System Administration

Understanding how computer networks operate is essential for anyone entering IT and system administration. This course provides a structured, reading-based introduction to networking concepts, protocols, and architecture without requiring prior technical experience. You will start by mastering key terminology and standard communication models before exploring administrative logic and modern networking practices. What you will learn: Understand the core layers of the OSI and TCP/IP models; Analyze packet routing, subnets, and IPv4 or IPv6 addressing; Explore essential network services including DNS, DHCP, and NAT; Examine network security fundamentals, firewalls, and zero-trust principles; Learn diagnostic workflows using standard command-line tools. The material begins with basic definitions and topologies before progressing into administrative techniques and security principles. Designed specifically for beginners, this course requires no previous experience in networking. Begin reading to establish a clear foundation in network administration today.