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Learn the basics of IP routing and network-layer functions for CCNA. Understand how routers use IP addressing and routing tables to efficiently forward packets.

Learn Cisco IPv4 configuration step by step using real CLI commands. This beginner-friendly CCNA lab shows how to configure, verify, and troubleshoot IPv4 on Cisco routers.

Learn how TCP/IP data encapsulation works step by step. Understand PDUs and the differences between frames, packets, and segments for your CCNA exam.

Learn the key differences between TCP and UDP in the transport layer. Discover how reliability, speed, and connection type impact network performance and application design.

Discover the history of TCP/IP from ARPANET’s early days to today’s Internet. Learn how this protocol suite revolutionized global networking and communication.

Learn how the TCP/IP layers and protocols work together to enable reliable network communication. Explore the roles of the Application, Transport, Internet, and Network Interface layers, and understand how encapsulation ensures efficient data transfer across modern networks.