January 09, 2026

CCNAv7: Introduction to Networks Companion Guide by Cisco

18 minutes

An official textbook for individuals pursuing careers in network administration or seeking to enhance their professional knowledge. The book comprehensively covers fundamental networking concepts, beginning with an overview of network types, topologies, and basic connectivity, and progressing to detailed explanations of protocols and models like TCP/IP and OSI. It further explores physical layer components, including various cabling types and wireless media, before addressing IP addressing schemes (IPv4 and IPv6), subnetting, and routing principles. Throughout its 17 chapters, the guide incorporates practical exercises, command syntax conventions, and essential troubleshooting tools such as ping and traceroute, culminating with insights into application layer protocols and crucial network security fundamentals.

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